#include <linux/string.h>
#include <linux/fs.h>
#include <linux/time.h>
+#include <linux/vmalloc.h>
#include <linux/jbd2.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/namei.h>
#include <linux/quotaops.h>
#include <linux/seq_file.h>
+#include <linux/proc_fs.h>
+#include <linux/ctype.h>
+#include <linux/marker.h>
#include <linux/log2.h>
#include <linux/crc16.h>
#include <asm/uaccess.h>
#include "ext4_jbd2.h"
#include "xattr.h"
#include "acl.h"
-#include "namei.h"
-#include "group.h"
+
+static int default_mb_history_length = 1000;
+
+module_param_named(default_mb_history_length, default_mb_history_length,
+ int, 0644);
+MODULE_PARM_DESC(default_mb_history_length,
+ "Default number of entries saved for mb_history");
+
+struct proc_dir_entry *ext4_proc_root;
+static struct kset *ext4_kset;
static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
unsigned long journal_devnum);
-static int ext4_create_journal(struct super_block *, struct ext4_super_block *,
- unsigned int);
-static void ext4_commit_super (struct super_block * sb,
- struct ext4_super_block * es,
- int sync);
-static void ext4_mark_recovery_complete(struct super_block * sb,
- struct ext4_super_block * es);
-static void ext4_clear_journal_err(struct super_block * sb,
- struct ext4_super_block * es);
+static int ext4_commit_super(struct super_block *sb, int sync);
+static void ext4_mark_recovery_complete(struct super_block *sb,
+ struct ext4_super_block *es);
+static void ext4_clear_journal_err(struct super_block *sb,
+ struct ext4_super_block *es);
static int ext4_sync_fs(struct super_block *sb, int wait);
-static const char *ext4_decode_error(struct super_block * sb, int errno,
+static const char *ext4_decode_error(struct super_block *sb, int errno,
char nbuf[16]);
-static int ext4_remount (struct super_block * sb, int * flags, char * data);
-static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf);
-static void ext4_unlockfs(struct super_block *sb);
-static void ext4_write_super (struct super_block * sb);
-static void ext4_write_super_lockfs(struct super_block *sb);
+static int ext4_remount(struct super_block *sb, int *flags, char *data);
+static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf);
+static int ext4_unfreeze(struct super_block *sb);
+static void ext4_write_super(struct super_block *sb);
+static int ext4_freeze(struct super_block *sb);
ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
{
return le32_to_cpu(bg->bg_block_bitmap_lo) |
(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
- (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
+ (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
}
ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
{
return le32_to_cpu(bg->bg_inode_bitmap_lo) |
(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
- (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
+ (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
}
ext4_fsblk_t ext4_inode_table(struct super_block *sb,
{
return le32_to_cpu(bg->bg_inode_table_lo) |
(EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
- (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
+ (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
+}
+
+__u32 ext4_free_blks_count(struct super_block *sb,
+ struct ext4_group_desc *bg)
+{
+ return le16_to_cpu(bg->bg_free_blocks_count_lo) |
+ (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
+ (__u32)le16_to_cpu(bg->bg_free_blocks_count_hi) << 16 : 0);
+}
+
+__u32 ext4_free_inodes_count(struct super_block *sb,
+ struct ext4_group_desc *bg)
+{
+ return le16_to_cpu(bg->bg_free_inodes_count_lo) |
+ (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
+ (__u32)le16_to_cpu(bg->bg_free_inodes_count_hi) << 16 : 0);
+}
+
+__u32 ext4_used_dirs_count(struct super_block *sb,
+ struct ext4_group_desc *bg)
+{
+ return le16_to_cpu(bg->bg_used_dirs_count_lo) |
+ (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
+ (__u32)le16_to_cpu(bg->bg_used_dirs_count_hi) << 16 : 0);
+}
+
+__u32 ext4_itable_unused_count(struct super_block *sb,
+ struct ext4_group_desc *bg)
+{
+ return le16_to_cpu(bg->bg_itable_unused_lo) |
+ (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
+ (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0);
}
void ext4_block_bitmap_set(struct super_block *sb,
bg->bg_inode_table_hi = cpu_to_le32(blk >> 32);
}
+void ext4_free_blks_set(struct super_block *sb,
+ struct ext4_group_desc *bg, __u32 count)
+{
+ bg->bg_free_blocks_count_lo = cpu_to_le16((__u16)count);
+ if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
+ bg->bg_free_blocks_count_hi = cpu_to_le16(count >> 16);
+}
+
+void ext4_free_inodes_set(struct super_block *sb,
+ struct ext4_group_desc *bg, __u32 count)
+{
+ bg->bg_free_inodes_count_lo = cpu_to_le16((__u16)count);
+ if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
+ bg->bg_free_inodes_count_hi = cpu_to_le16(count >> 16);
+}
+
+void ext4_used_dirs_set(struct super_block *sb,
+ struct ext4_group_desc *bg, __u32 count)
+{
+ bg->bg_used_dirs_count_lo = cpu_to_le16((__u16)count);
+ if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
+ bg->bg_used_dirs_count_hi = cpu_to_le16(count >> 16);
+}
+
+void ext4_itable_unused_set(struct super_block *sb,
+ struct ext4_group_desc *bg, __u32 count)
+{
+ bg->bg_itable_unused_lo = cpu_to_le16((__u16)count);
+ if (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT)
+ bg->bg_itable_unused_hi = cpu_to_le16(count >> 16);
+}
+
/*
* Wrappers for jbd2_journal_start/end.
*
* backs (eg. EIO in the commit thread), then we still need to
* take the FS itself readonly cleanly. */
journal = EXT4_SB(sb)->s_journal;
- if (is_journal_aborted(journal)) {
- ext4_abort(sb, __func__,
- "Detected aborted journal");
- return ERR_PTR(-EROFS);
+ if (journal) {
+ if (is_journal_aborted(journal)) {
+ ext4_abort(sb, __func__, "Detected aborted journal");
+ return ERR_PTR(-EROFS);
+ }
+ return jbd2_journal_start(journal, nblocks);
}
-
- return jbd2_journal_start(journal, nblocks);
+ /*
+ * We're not journaling, return the appropriate indication.
+ */
+ current->journal_info = EXT4_NOJOURNAL_HANDLE;
+ return current->journal_info;
}
/*
int err;
int rc;
+ if (!ext4_handle_valid(handle)) {
+ /*
+ * Do this here since we don't call jbd2_journal_stop() in
+ * no-journal mode.
+ */
+ current->journal_info = NULL;
+ return 0;
+ }
sb = handle->h_transaction->t_journal->j_private;
err = handle->h_err;
rc = jbd2_journal_stop(handle);
char nbuf[16];
const char *errstr = ext4_decode_error(NULL, err, nbuf);
+ BUG_ON(!ext4_handle_valid(handle));
+
if (bh)
BUFFER_TRACE(bh, "abort");
if (sb->s_flags & MS_RDONLY)
return;
- if (!test_opt (sb, ERRORS_CONT)) {
+ if (!test_opt(sb, ERRORS_CONT)) {
journal_t *journal = EXT4_SB(sb)->s_journal;
EXT4_SB(sb)->s_mount_opt |= EXT4_MOUNT_ABORT;
if (journal)
jbd2_journal_abort(journal, -EIO);
}
- if (test_opt (sb, ERRORS_RO)) {
- printk (KERN_CRIT "Remounting filesystem read-only\n");
+ if (test_opt(sb, ERRORS_RO)) {
+ ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
sb->s_flags |= MS_RDONLY;
}
- ext4_commit_super(sb, es, 1);
+ ext4_commit_super(sb, 1);
if (test_opt(sb, ERRORS_PANIC))
panic("EXT4-fs (device %s): panic forced after error\n",
sb->s_id);
}
-void ext4_error (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext4_error(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
- printk(KERN_CRIT "EXT4-fs error (device %s): %s: ",sb->s_id, function);
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s: ", sb->s_id, function);
vprintk(fmt, args);
printk("\n");
va_end(args);
ext4_handle_error(sb);
}
-static const char *ext4_decode_error(struct super_block * sb, int errno,
+static const char *ext4_decode_error(struct super_block *sb, int errno,
char nbuf[16])
{
char *errstr = NULL;
/* __ext4_std_error decodes expected errors from journaling functions
* automatically and invokes the appropriate error response. */
-void __ext4_std_error (struct super_block * sb, const char * function,
- int errno)
+void __ext4_std_error(struct super_block *sb, const char *function, int errno)
{
char nbuf[16];
const char *errstr;
return;
errstr = ext4_decode_error(sb, errno, nbuf);
- printk (KERN_CRIT "EXT4-fs error (device %s) in %s: %s\n",
- sb->s_id, function, errstr);
+ printk(KERN_CRIT "EXT4-fs error (device %s) in %s: %s\n",
+ sb->s_id, function, errstr);
ext4_handle_error(sb);
}
* case we take the easy way out and panic immediately.
*/
-void ext4_abort (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext4_abort(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
va_list args;
- printk (KERN_CRIT "ext4_abort called.\n");
-
va_start(args, fmt);
- printk(KERN_CRIT "EXT4-fs error (device %s): %s: ",sb->s_id, function);
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s: ", sb->s_id, function);
vprintk(fmt, args);
printk("\n");
va_end(args);
if (sb->s_flags & MS_RDONLY)
return;
- printk(KERN_CRIT "Remounting filesystem read-only\n");
+ ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
sb->s_flags |= MS_RDONLY;
EXT4_SB(sb)->s_mount_opt |= EXT4_MOUNT_ABORT;
- jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
+ if (EXT4_SB(sb)->s_journal)
+ jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
}
-void ext4_warning (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext4_msg (struct super_block * sb, const char *prefix,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ printk("%sEXT4-fs (%s): ", prefix, sb->s_id);
+ vprintk(fmt, args);
+ printk("\n");
+ va_end(args);
+}
+
+void ext4_warning(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
va_list args;
va_end(args);
}
+void ext4_grp_locked_error(struct super_block *sb, ext4_group_t grp,
+ const char *function, const char *fmt, ...)
+__releases(bitlock)
+__acquires(bitlock)
+{
+ va_list args;
+ struct ext4_super_block *es = EXT4_SB(sb)->s_es;
+
+ va_start(args, fmt);
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s: ", sb->s_id, function);
+ vprintk(fmt, args);
+ printk("\n");
+ va_end(args);
+
+ if (test_opt(sb, ERRORS_CONT)) {
+ EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
+ es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
+ ext4_commit_super(sb, 0);
+ return;
+ }
+ ext4_unlock_group(sb, grp);
+ ext4_handle_error(sb);
+ /*
+ * We only get here in the ERRORS_RO case; relocking the group
+ * may be dangerous, but nothing bad will happen since the
+ * filesystem will have already been marked read/only and the
+ * journal has been aborted. We return 1 as a hint to callers
+ * who might what to use the return value from
+ * ext4_grp_locked_error() to distinguish beween the
+ * ERRORS_CONT and ERRORS_RO case, and perhaps return more
+ * aggressively from the ext4 function in question, with a
+ * more appropriate error code.
+ */
+ ext4_lock_group(sb, grp);
+ return;
+}
+
void ext4_update_dynamic_rev(struct super_block *sb)
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
*/
}
-int ext4_update_compat_feature(handle_t *handle,
- struct super_block *sb, __u32 compat)
-{
- int err = 0;
- if (!EXT4_HAS_COMPAT_FEATURE(sb, compat)) {
- err = ext4_journal_get_write_access(handle,
- EXT4_SB(sb)->s_sbh);
- if (err)
- return err;
- EXT4_SET_COMPAT_FEATURE(sb, compat);
- sb->s_dirt = 1;
- handle->h_sync = 1;
- BUFFER_TRACE(EXT4_SB(sb)->s_sbh,
- "call ext4_journal_dirty_met adata");
- err = ext4_journal_dirty_metadata(handle,
- EXT4_SB(sb)->s_sbh);
- }
- return err;
-}
-
-int ext4_update_rocompat_feature(handle_t *handle,
- struct super_block *sb, __u32 rocompat)
-{
- int err = 0;
- if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, rocompat)) {
- err = ext4_journal_get_write_access(handle,
- EXT4_SB(sb)->s_sbh);
- if (err)
- return err;
- EXT4_SET_RO_COMPAT_FEATURE(sb, rocompat);
- sb->s_dirt = 1;
- handle->h_sync = 1;
- BUFFER_TRACE(EXT4_SB(sb)->s_sbh,
- "call ext4_journal_dirty_met adata");
- err = ext4_journal_dirty_metadata(handle,
- EXT4_SB(sb)->s_sbh);
- }
- return err;
-}
-
-int ext4_update_incompat_feature(handle_t *handle,
- struct super_block *sb, __u32 incompat)
-{
- int err = 0;
- if (!EXT4_HAS_INCOMPAT_FEATURE(sb, incompat)) {
- err = ext4_journal_get_write_access(handle,
- EXT4_SB(sb)->s_sbh);
- if (err)
- return err;
- EXT4_SET_INCOMPAT_FEATURE(sb, incompat);
- sb->s_dirt = 1;
- handle->h_sync = 1;
- BUFFER_TRACE(EXT4_SB(sb)->s_sbh,
- "call ext4_journal_dirty_met adata");
- err = ext4_journal_dirty_metadata(handle,
- EXT4_SB(sb)->s_sbh);
- }
- return err;
-}
-
/*
* Open the external journal device
*/
-static struct block_device *ext4_blkdev_get(dev_t dev)
+static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb)
{
struct block_device *bdev;
char b[BDEVNAME_SIZE];
return bdev;
fail:
- printk(KERN_ERR "EXT4: failed to open journal device %s: %ld\n",
+ ext4_msg(sb, KERN_ERR, "failed to open journal device %s: %ld",
__bdevname(dev, b), PTR_ERR(bdev));
return NULL;
}
static int ext4_blkdev_put(struct block_device *bdev)
{
bd_release(bdev);
- return blkdev_put(bdev);
+ return blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
}
static int ext4_blkdev_remove(struct ext4_sb_info *sbi)
{
struct list_head *l;
- printk(KERN_ERR "sb orphan head is %d\n",
- le32_to_cpu(sbi->s_es->s_last_orphan));
+ ext4_msg(sb, KERN_ERR, "sb orphan head is %d",
+ le32_to_cpu(sbi->s_es->s_last_orphan));
printk(KERN_ERR "sb_info orphan list:\n");
list_for_each(l, &sbi->s_orphan) {
}
}
-static void ext4_put_super (struct super_block * sb)
+static void ext4_put_super(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- int i;
+ int i, err;
+ ext4_release_system_zone(sb);
ext4_mb_release(sb);
ext4_ext_release(sb);
ext4_xattr_put_super(sb);
- jbd2_journal_destroy(sbi->s_journal);
- sbi->s_journal = NULL;
+ if (sbi->s_journal) {
+ err = jbd2_journal_destroy(sbi->s_journal);
+ sbi->s_journal = NULL;
+ if (err < 0)
+ ext4_abort(sb, __func__,
+ "Couldn't clean up the journal");
+ }
if (!(sb->s_flags & MS_RDONLY)) {
EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
es->s_state = cpu_to_le16(sbi->s_mount_state);
- BUFFER_TRACE(sbi->s_sbh, "marking dirty");
- mark_buffer_dirty(sbi->s_sbh);
- ext4_commit_super(sb, es, 1);
+ ext4_commit_super(sb, 1);
+ }
+ if (sbi->s_proc) {
+ remove_proc_entry(sb->s_id, ext4_proc_root);
}
+ kobject_del(&sbi->s_kobj);
for (i = 0; i < sbi->s_gdb_count; i++)
brelse(sbi->s_group_desc[i]);
kfree(sbi->s_group_desc);
- kfree(sbi->s_flex_groups);
+ if (is_vmalloc_addr(sbi->s_flex_groups))
+ vfree(sbi->s_flex_groups);
+ else
+ kfree(sbi->s_flex_groups);
percpu_counter_destroy(&sbi->s_freeblocks_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
+ percpu_counter_destroy(&sbi->s_dirtyblocks_counter);
brelse(sbi->s_sbh);
#ifdef CONFIG_QUOTA
for (i = 0; i < MAXQUOTAS; i++)
ext4_blkdev_remove(sbi);
}
sb->s_fs_info = NULL;
+ /*
+ * Now that we are completely done shutting down the
+ * superblock, we need to actually destroy the kobject.
+ */
+ unlock_kernel();
+ unlock_super(sb);
+ kobject_put(&sbi->s_kobj);
+ wait_for_completion(&sbi->s_kobj_unregister);
+ lock_super(sb);
+ lock_kernel();
+ kfree(sbi->s_blockgroup_lock);
kfree(sbi);
- return;
}
static struct kmem_cache *ext4_inode_cachep;
ei = kmem_cache_alloc(ext4_inode_cachep, GFP_NOFS);
if (!ei)
return NULL;
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
ei->i_acl = EXT4_ACL_NOT_CACHED;
ei->i_default_acl = EXT4_ACL_NOT_CACHED;
#endif
- ei->i_block_alloc_info = NULL;
ei->vfs_inode.i_version = 1;
+ ei->vfs_inode.i_data.writeback_index = 0;
memset(&ei->i_cached_extent, 0, sizeof(struct ext4_ext_cache));
INIT_LIST_HEAD(&ei->i_prealloc_list);
spin_lock_init(&ei->i_prealloc_lock);
+ /*
+ * Note: We can be called before EXT4_SB(sb)->s_journal is set,
+ * therefore it can be null here. Don't check it, just initialize
+ * jinode.
+ */
jbd2_journal_init_jbd_inode(&ei->jinode, &ei->vfs_inode);
+ ei->i_reserved_data_blocks = 0;
+ ei->i_reserved_meta_blocks = 0;
+ ei->i_allocated_meta_blocks = 0;
+ ei->i_delalloc_reserved_flag = 0;
+ spin_lock_init(&(ei->i_block_reservation_lock));
+
return &ei->vfs_inode;
}
static void ext4_destroy_inode(struct inode *inode)
{
if (!list_empty(&(EXT4_I(inode)->i_orphan))) {
- printk("EXT4 Inode %p: orphan list check failed!\n",
- EXT4_I(inode));
+ ext4_msg(inode->i_sb, KERN_ERR,
+ "Inode %lu (%p): orphan list check failed!",
+ inode->i_ino, EXT4_I(inode));
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 16, 4,
EXT4_I(inode), sizeof(struct ext4_inode_info),
true);
kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
}
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
{
struct ext4_inode_info *ei = (struct ext4_inode_info *) foo;
INIT_LIST_HEAD(&ei->i_orphan);
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
init_rwsem(&ei->xattr_sem);
#endif
init_rwsem(&ei->i_data_sem);
static void ext4_clear_inode(struct inode *inode)
{
- struct ext4_block_alloc_info *rsv = EXT4_I(inode)->i_block_alloc_info;
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
if (EXT4_I(inode)->i_acl &&
EXT4_I(inode)->i_acl != EXT4_ACL_NOT_CACHED) {
posix_acl_release(EXT4_I(inode)->i_acl);
EXT4_I(inode)->i_default_acl = EXT4_ACL_NOT_CACHED;
}
#endif
- ext4_discard_reservation(inode);
- EXT4_I(inode)->i_block_alloc_info = NULL;
- if (unlikely(rsv))
- kfree(rsv);
- jbd2_journal_release_jbd_inode(EXT4_SB(inode->i_sb)->s_journal,
+ ext4_discard_preallocations(inode);
+ if (EXT4_JOURNAL(inode))
+ jbd2_journal_release_jbd_inode(EXT4_SB(inode->i_sb)->s_journal,
&EXT4_I(inode)->jinode);
}
-static inline void ext4_show_quota_options(struct seq_file *seq, struct super_block *sb)
+static inline void ext4_show_quota_options(struct seq_file *seq,
+ struct super_block *sb)
{
#if defined(CONFIG_QUOTA)
struct ext4_sb_info *sbi = EXT4_SB(sb);
if (sbi->s_jquota_fmt)
seq_printf(seq, ",jqfmt=%s",
- (sbi->s_jquota_fmt == QFMT_VFS_OLD) ? "vfsold": "vfsv0");
+ (sbi->s_jquota_fmt == QFMT_VFS_OLD) ? "vfsold" : "vfsv0");
if (sbi->s_qf_names[USRQUOTA])
seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
seq_puts(seq, ",debug");
if (test_opt(sb, OLDALLOC))
seq_puts(seq, ",oldalloc");
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
if (test_opt(sb, XATTR_USER) &&
!(def_mount_opts & EXT4_DEFM_XATTR_USER))
seq_puts(seq, ",user_xattr");
seq_puts(seq, ",nouser_xattr");
}
#endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL))
seq_puts(seq, ",acl");
if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL))
seq_puts(seq, ",noacl");
#endif
- if (!test_opt(sb, RESERVATION))
- seq_puts(seq, ",noreservation");
- if (sbi->s_commit_interval) {
+ if (sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) {
seq_printf(seq, ",commit=%u",
(unsigned) (sbi->s_commit_interval / HZ));
}
+ if (sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME) {
+ seq_printf(seq, ",min_batch_time=%u",
+ (unsigned) sbi->s_min_batch_time);
+ }
+ if (sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) {
+ seq_printf(seq, ",max_batch_time=%u",
+ (unsigned) sbi->s_min_batch_time);
+ }
+
/*
* We're changing the default of barrier mount option, so
* let's always display its mount state so it's clear what its
seq_puts(seq, ",journal_async_commit");
if (test_opt(sb, NOBH))
seq_puts(seq, ",nobh");
- if (!test_opt(sb, EXTENTS))
- seq_puts(seq, ",noextents");
- if (!test_opt(sb, MBALLOC))
- seq_puts(seq, ",nomballoc");
if (test_opt(sb, I_VERSION))
seq_puts(seq, ",i_version");
+ if (!test_opt(sb, DELALLOC))
+ seq_puts(seq, ",nodelalloc");
+
if (sbi->s_stripe)
seq_printf(seq, ",stripe=%lu", sbi->s_stripe);
else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
seq_puts(seq, ",data=writeback");
+ if (sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS)
+ seq_printf(seq, ",inode_readahead_blks=%u",
+ sbi->s_inode_readahead_blks);
+
+ if (test_opt(sb, DATA_ERR_ABORT))
+ seq_puts(seq, ",data_err=abort");
+
+ if (test_opt(sb, NO_AUTO_DA_ALLOC))
+ seq_puts(seq, ",noauto_da_alloc");
+
ext4_show_quota_options(seq, sb);
+
return 0;
}
-
static struct inode *ext4_nfs_get_inode(struct super_block *sb,
- u64 ino, u32 generation)
+ u64 ino, u32 generation)
{
struct inode *inode;
}
static struct dentry *ext4_fh_to_dentry(struct super_block *sb, struct fid *fid,
- int fh_len, int fh_type)
+ int fh_len, int fh_type)
{
return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
ext4_nfs_get_inode);
}
static struct dentry *ext4_fh_to_parent(struct super_block *sb, struct fid *fid,
- int fh_len, int fh_type)
+ int fh_len, int fh_type)
{
return generic_fh_to_parent(sb, fid, fh_len, fh_type,
ext4_nfs_get_inode);
}
+/*
+ * Try to release metadata pages (indirect blocks, directories) which are
+ * mapped via the block device. Since these pages could have journal heads
+ * which would prevent try_to_free_buffers() from freeing them, we must use
+ * jbd2 layer's try_to_free_buffers() function to release them.
+ */
+static int bdev_try_to_free_page(struct super_block *sb, struct page *page,
+ gfp_t wait)
+{
+ journal_t *journal = EXT4_SB(sb)->s_journal;
+
+ WARN_ON(PageChecked(page));
+ if (!page_has_buffers(page))
+ return 0;
+ if (journal)
+ return jbd2_journal_try_to_free_buffers(journal, page,
+ wait & ~__GFP_WAIT);
+ return try_to_free_buffers(page);
+}
+
#ifdef CONFIG_QUOTA
-#define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")
-#define QTYPE2MOPT(on, t) ((t)==USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA))
+#define QTYPE2NAME(t) ((t) == USRQUOTA ? "user" : "group")
+#define QTYPE2MOPT(on, t) ((t) == USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA))
-static int ext4_dquot_initialize(struct inode *inode, int type);
-static int ext4_dquot_drop(struct inode *inode);
static int ext4_write_dquot(struct dquot *dquot);
static int ext4_acquire_dquot(struct dquot *dquot);
static int ext4_release_dquot(struct dquot *dquot);
const char *data, size_t len, loff_t off);
static struct dquot_operations ext4_quota_operations = {
- .initialize = ext4_dquot_initialize,
- .drop = ext4_dquot_drop,
+ .initialize = dquot_initialize,
+ .drop = dquot_drop,
.alloc_space = dquot_alloc_space,
+ .reserve_space = dquot_reserve_space,
+ .claim_space = dquot_claim_space,
+ .release_rsv = dquot_release_reserved_space,
+ .get_reserved_space = ext4_get_reserved_space,
.alloc_inode = dquot_alloc_inode,
.free_space = dquot_free_space,
.free_inode = dquot_free_inode,
.acquire_dquot = ext4_acquire_dquot,
.release_dquot = ext4_release_dquot,
.mark_dirty = ext4_mark_dquot_dirty,
- .write_info = ext4_write_info
+ .write_info = ext4_write_info,
+ .alloc_dquot = dquot_alloc,
+ .destroy_dquot = dquot_destroy,
};
static struct quotactl_ops ext4_qctl_operations = {
.dirty_inode = ext4_dirty_inode,
.delete_inode = ext4_delete_inode,
.put_super = ext4_put_super,
- .write_super = ext4_write_super,
.sync_fs = ext4_sync_fs,
- .write_super_lockfs = ext4_write_super_lockfs,
- .unlockfs = ext4_unlockfs,
+ .freeze_fs = ext4_freeze,
+ .unfreeze_fs = ext4_unfreeze,
+ .statfs = ext4_statfs,
+ .remount_fs = ext4_remount,
+ .clear_inode = ext4_clear_inode,
+ .show_options = ext4_show_options,
+#ifdef CONFIG_QUOTA
+ .quota_read = ext4_quota_read,
+ .quota_write = ext4_quota_write,
+#endif
+ .bdev_try_to_free_page = bdev_try_to_free_page,
+};
+
+static const struct super_operations ext4_nojournal_sops = {
+ .alloc_inode = ext4_alloc_inode,
+ .destroy_inode = ext4_destroy_inode,
+ .write_inode = ext4_write_inode,
+ .dirty_inode = ext4_dirty_inode,
+ .delete_inode = ext4_delete_inode,
+ .write_super = ext4_write_super,
+ .put_super = ext4_put_super,
.statfs = ext4_statfs,
.remount_fs = ext4_remount,
.clear_inode = ext4_clear_inode,
.quota_read = ext4_quota_read,
.quota_write = ext4_quota_write,
#endif
+ .bdev_try_to_free_page = bdev_try_to_free_page,
};
static const struct export_operations ext4_export_ops = {
enum {
Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid,
Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
- Opt_nouid32, Opt_nocheck, Opt_debug, Opt_oldalloc, Opt_orlov,
+ Opt_nouid32, Opt_debug, Opt_oldalloc, Opt_orlov,
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
- Opt_reservation, Opt_noreservation, Opt_noload, Opt_nobh, Opt_bh,
- Opt_commit, Opt_journal_update, Opt_journal_inum, Opt_journal_dev,
+ Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload, Opt_nobh, Opt_bh,
+ Opt_commit, Opt_min_batch_time, Opt_max_batch_time,
+ Opt_journal_update, Opt_journal_dev,
Opt_journal_checksum, Opt_journal_async_commit,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
+ Opt_data_err_abort, Opt_data_err_ignore, Opt_mb_history_length,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
- Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
- Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version,
- Opt_mballoc, Opt_nomballoc, Opt_stripe, Opt_delalloc,
+ Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, Opt_resize,
+ Opt_usrquota, Opt_grpquota, Opt_i_version,
+ Opt_stripe, Opt_delalloc, Opt_nodelalloc,
+ Opt_block_validity, Opt_noblock_validity,
+ Opt_inode_readahead_blks, Opt_journal_ioprio
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{Opt_bsd_df, "bsddf"},
{Opt_minix_df, "minixdf"},
{Opt_grpid, "grpid"},
{Opt_err_panic, "errors=panic"},
{Opt_err_ro, "errors=remount-ro"},
{Opt_nouid32, "nouid32"},
- {Opt_nocheck, "nocheck"},
- {Opt_nocheck, "check=none"},
{Opt_debug, "debug"},
{Opt_oldalloc, "oldalloc"},
{Opt_orlov, "orlov"},
{Opt_nouser_xattr, "nouser_xattr"},
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
- {Opt_reservation, "reservation"},
- {Opt_noreservation, "noreservation"},
{Opt_noload, "noload"},
{Opt_nobh, "nobh"},
{Opt_bh, "bh"},
{Opt_commit, "commit=%u"},
+ {Opt_min_batch_time, "min_batch_time=%u"},
+ {Opt_max_batch_time, "max_batch_time=%u"},
{Opt_journal_update, "journal=update"},
- {Opt_journal_inum, "journal=%u"},
{Opt_journal_dev, "journal_dev=%u"},
{Opt_journal_checksum, "journal_checksum"},
{Opt_journal_async_commit, "journal_async_commit"},
{Opt_data_journal, "data=journal"},
{Opt_data_ordered, "data=ordered"},
{Opt_data_writeback, "data=writeback"},
+ {Opt_data_err_abort, "data_err=abort"},
+ {Opt_data_err_ignore, "data_err=ignore"},
+ {Opt_mb_history_length, "mb_history_length=%u"},
{Opt_offusrjquota, "usrjquota="},
{Opt_usrjquota, "usrjquota=%s"},
{Opt_offgrpjquota, "grpjquota="},
{Opt_quota, "quota"},
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
- {Opt_extents, "extents"},
- {Opt_noextents, "noextents"},
+ {Opt_barrier, "barrier"},
+ {Opt_nobarrier, "nobarrier"},
{Opt_i_version, "i_version"},
- {Opt_mballoc, "mballoc"},
- {Opt_nomballoc, "nomballoc"},
{Opt_stripe, "stripe=%u"},
{Opt_resize, "resize"},
{Opt_delalloc, "delalloc"},
+ {Opt_nodelalloc, "nodelalloc"},
+ {Opt_block_validity, "block_validity"},
+ {Opt_noblock_validity, "noblock_validity"},
+ {Opt_inode_readahead_blks, "inode_readahead_blks=%u"},
+ {Opt_journal_ioprio, "journal_ioprio=%u"},
+ {Opt_auto_da_alloc, "auto_da_alloc=%u"},
+ {Opt_auto_da_alloc, "auto_da_alloc"},
+ {Opt_noauto_da_alloc, "noauto_da_alloc"},
{Opt_err, NULL},
};
if (!options || strncmp(options, "sb=", 3) != 0)
return 1; /* Default location */
+
options += 3;
- /*todo: use simple_strtoll with >32bit ext4 */
+ /* TODO: use simple_strtoll with >32bit ext4 */
sb_block = simple_strtoul(options, &options, 0);
if (*options && *options != ',') {
- printk("EXT4-fs: Invalid sb specification: %s\n",
+ printk(KERN_ERR "EXT4-fs: Invalid sb specification: %s\n",
(char *) *data);
return 1;
}
if (*options == ',')
options++;
*data = (void *) options;
+
return sb_block;
}
-static int parse_options (char *options, struct super_block *sb,
- unsigned int *inum, unsigned long *journal_devnum,
- ext4_fsblk_t *n_blocks_count, int is_remount)
+#define DEFAULT_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
+
+static int parse_options(char *options, struct super_block *sb,
+ unsigned long *journal_devnum,
+ unsigned int *journal_ioprio,
+ ext4_fsblk_t *n_blocks_count, int is_remount)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- char * p;
+ char *p;
substring_t args[MAX_OPT_ARGS];
int data_opt = 0;
int option;
if (!options)
return 1;
- while ((p = strsep (&options, ",")) != NULL) {
+ while ((p = strsep(&options, ",")) != NULL) {
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
- clear_opt (sbi->s_mount_opt, MINIX_DF);
+ clear_opt(sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
- set_opt (sbi->s_mount_opt, MINIX_DF);
+ set_opt(sbi->s_mount_opt, MINIX_DF);
break;
case Opt_grpid:
- set_opt (sbi->s_mount_opt, GRPID);
+ set_opt(sbi->s_mount_opt, GRPID);
break;
case Opt_nogrpid:
- clear_opt (sbi->s_mount_opt, GRPID);
+ clear_opt(sbi->s_mount_opt, GRPID);
break;
case Opt_resuid:
if (match_int(&args[0], &option))
/* *sb_block = match_int(&args[0]); */
break;
case Opt_err_panic:
- clear_opt (sbi->s_mount_opt, ERRORS_CONT);
- clear_opt (sbi->s_mount_opt, ERRORS_RO);
- set_opt (sbi->s_mount_opt, ERRORS_PANIC);
+ clear_opt(sbi->s_mount_opt, ERRORS_CONT);
+ clear_opt(sbi->s_mount_opt, ERRORS_RO);
+ set_opt(sbi->s_mount_opt, ERRORS_PANIC);
break;
case Opt_err_ro:
- clear_opt (sbi->s_mount_opt, ERRORS_CONT);
- clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
- set_opt (sbi->s_mount_opt, ERRORS_RO);
+ clear_opt(sbi->s_mount_opt, ERRORS_CONT);
+ clear_opt(sbi->s_mount_opt, ERRORS_PANIC);
+ set_opt(sbi->s_mount_opt, ERRORS_RO);
break;
case Opt_err_cont:
- clear_opt (sbi->s_mount_opt, ERRORS_RO);
- clear_opt (sbi->s_mount_opt, ERRORS_PANIC);
- set_opt (sbi->s_mount_opt, ERRORS_CONT);
+ clear_opt(sbi->s_mount_opt, ERRORS_RO);
+ clear_opt(sbi->s_mount_opt, ERRORS_PANIC);
+ set_opt(sbi->s_mount_opt, ERRORS_CONT);
break;
case Opt_nouid32:
- set_opt (sbi->s_mount_opt, NO_UID32);
- break;
- case Opt_nocheck:
- clear_opt (sbi->s_mount_opt, CHECK);
+ set_opt(sbi->s_mount_opt, NO_UID32);
break;
case Opt_debug:
- set_opt (sbi->s_mount_opt, DEBUG);
+ set_opt(sbi->s_mount_opt, DEBUG);
break;
case Opt_oldalloc:
- set_opt (sbi->s_mount_opt, OLDALLOC);
+ set_opt(sbi->s_mount_opt, OLDALLOC);
break;
case Opt_orlov:
- clear_opt (sbi->s_mount_opt, OLDALLOC);
+ clear_opt(sbi->s_mount_opt, OLDALLOC);
break;
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
case Opt_user_xattr:
- set_opt (sbi->s_mount_opt, XATTR_USER);
+ set_opt(sbi->s_mount_opt, XATTR_USER);
break;
case Opt_nouser_xattr:
- clear_opt (sbi->s_mount_opt, XATTR_USER);
+ clear_opt(sbi->s_mount_opt, XATTR_USER);
break;
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
- printk("EXT4 (no)user_xattr options not supported\n");
+ ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported");
break;
#endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
case Opt_acl:
set_opt(sbi->s_mount_opt, POSIX_ACL);
break;
#else
case Opt_acl:
case Opt_noacl:
- printk("EXT4 (no)acl options not supported\n");
+ ext4_msg(sb, KERN_ERR, "(no)acl options not supported");
break;
#endif
- case Opt_reservation:
- set_opt(sbi->s_mount_opt, RESERVATION);
- break;
- case Opt_noreservation:
- clear_opt(sbi->s_mount_opt, RESERVATION);
- break;
case Opt_journal_update:
/* @@@ FIXME */
/* Eventually we will want to be able to create
user to specify an existing inode to be the
journal file. */
if (is_remount) {
- printk(KERN_ERR "EXT4-fs: cannot specify "
- "journal on remount\n");
- return 0;
- }
- set_opt (sbi->s_mount_opt, UPDATE_JOURNAL);
- break;
- case Opt_journal_inum:
- if (is_remount) {
- printk(KERN_ERR "EXT4-fs: cannot specify "
- "journal on remount\n");
+ ext4_msg(sb, KERN_ERR,
+ "Cannot specify journal on remount");
return 0;
}
- if (match_int(&args[0], &option))
- return 0;
- *inum = option;
+ set_opt(sbi->s_mount_opt, UPDATE_JOURNAL);
break;
case Opt_journal_dev:
if (is_remount) {
- printk(KERN_ERR "EXT4-fs: cannot specify "
- "journal on remount\n");
+ ext4_msg(sb, KERN_ERR,
+ "Cannot specify journal on remount");
return 0;
}
if (match_int(&args[0], &option))
set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM);
break;
case Opt_noload:
- set_opt (sbi->s_mount_opt, NOLOAD);
+ set_opt(sbi->s_mount_opt, NOLOAD);
break;
case Opt_commit:
if (match_int(&args[0], &option))
option = JBD2_DEFAULT_MAX_COMMIT_AGE;
sbi->s_commit_interval = HZ * option;
break;
+ case Opt_max_batch_time:
+ if (match_int(&args[0], &option))
+ return 0;
+ if (option < 0)
+ return 0;
+ if (option == 0)
+ option = EXT4_DEF_MAX_BATCH_TIME;
+ sbi->s_max_batch_time = option;
+ break;
+ case Opt_min_batch_time:
+ if (match_int(&args[0], &option))
+ return 0;
+ if (option < 0)
+ return 0;
+ sbi->s_min_batch_time = option;
+ break;
case Opt_data_journal:
data_opt = EXT4_MOUNT_JOURNAL_DATA;
goto datacheck;
if (is_remount) {
if ((sbi->s_mount_opt & EXT4_MOUNT_DATA_FLAGS)
!= data_opt) {
- printk(KERN_ERR
- "EXT4-fs: cannot change data "
- "mode on remount\n");
+ ext4_msg(sb, KERN_ERR,
+ "Cannot change data mode on remount");
return 0;
}
} else {
sbi->s_mount_opt |= data_opt;
}
break;
+ case Opt_data_err_abort:
+ set_opt(sbi->s_mount_opt, DATA_ERR_ABORT);
+ break;
+ case Opt_data_err_ignore:
+ clear_opt(sbi->s_mount_opt, DATA_ERR_ABORT);
+ break;
+ case Opt_mb_history_length:
+ if (match_int(&args[0], &option))
+ return 0;
+ if (option < 0)
+ return 0;
+ sbi->s_mb_history_max = option;
+ break;
#ifdef CONFIG_QUOTA
case Opt_usrjquota:
qtype = USRQUOTA;
case Opt_grpjquota:
qtype = GRPQUOTA;
set_qf_name:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
!sbi->s_qf_names[qtype]) {
- printk(KERN_ERR
- "EXT4-fs: Cannot change journaled "
- "quota options when quota turned on.\n");
+ ext4_msg(sb, KERN_ERR,
+ "Cannot change journaled "
+ "quota options when quota turned on");
return 0;
}
qname = match_strdup(&args[0]);
if (!qname) {
- printk(KERN_ERR
- "EXT4-fs: not enough memory for "
- "storing quotafile name.\n");
+ ext4_msg(sb, KERN_ERR,
+ "Not enough memory for "
+ "storing quotafile name");
return 0;
}
if (sbi->s_qf_names[qtype] &&
strcmp(sbi->s_qf_names[qtype], qname)) {
- printk(KERN_ERR
- "EXT4-fs: %s quota file already "
- "specified.\n", QTYPE2NAME(qtype));
+ ext4_msg(sb, KERN_ERR,
+ "%s quota file already "
+ "specified", QTYPE2NAME(qtype));
kfree(qname);
return 0;
}
sbi->s_qf_names[qtype] = qname;
if (strchr(sbi->s_qf_names[qtype], '/')) {
- printk(KERN_ERR
- "EXT4-fs: quotafile must be on "
- "filesystem root.\n");
+ ext4_msg(sb, KERN_ERR,
+ "quotafile must be on "
+ "filesystem root");
kfree(sbi->s_qf_names[qtype]);
sbi->s_qf_names[qtype] = NULL;
return 0;
case Opt_offgrpjquota:
qtype = GRPQUOTA;
clear_qf_name:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
sbi->s_qf_names[qtype]) {
- printk(KERN_ERR "EXT4-fs: Cannot change "
+ ext4_msg(sb, KERN_ERR, "Cannot change "
"journaled quota options when "
- "quota turned on.\n");
+ "quota turned on");
return 0;
}
/*
case Opt_jqfmt_vfsv0:
qfmt = QFMT_VFS_V0;
set_qf_format:
- if ((sb_any_quota_enabled(sb) ||
- sb_any_quota_suspended(sb)) &&
+ if (sb_any_quota_loaded(sb) &&
sbi->s_jquota_fmt != qfmt) {
- printk(KERN_ERR "EXT4-fs: Cannot change "
+ ext4_msg(sb, KERN_ERR, "Cannot change "
"journaled quota options when "
- "quota turned on.\n");
+ "quota turned on");
return 0;
}
sbi->s_jquota_fmt = qfmt;
set_opt(sbi->s_mount_opt, GRPQUOTA);
break;
case Opt_noquota:
- if (sb_any_quota_enabled(sb)) {
- printk(KERN_ERR "EXT4-fs: Cannot change quota "
- "options when quota turned on.\n");
+ if (sb_any_quota_loaded(sb)) {
+ ext4_msg(sb, KERN_ERR, "Cannot change quota "
+ "options when quota turned on");
return 0;
}
clear_opt(sbi->s_mount_opt, QUOTA);
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
- printk(KERN_ERR
- "EXT4-fs: quota options not supported.\n");
+ ext4_msg(sb, KERN_ERR,
+ "quota options not supported");
break;
case Opt_usrjquota:
case Opt_grpjquota:
case Opt_offgrpjquota:
case Opt_jqfmt_vfsold:
case Opt_jqfmt_vfsv0:
- printk(KERN_ERR
- "EXT4-fs: journaled quota options not "
- "supported.\n");
+ ext4_msg(sb, KERN_ERR,
+ "journaled quota options not supported");
break;
case Opt_noquota:
break;
case Opt_abort:
set_opt(sbi->s_mount_opt, ABORT);
break;
+ case Opt_nobarrier:
+ clear_opt(sbi->s_mount_opt, BARRIER);
+ break;
case Opt_barrier:
- if (match_int(&args[0], &option))
- return 0;
+ if (match_int(&args[0], &option)) {
+ set_opt(sbi->s_mount_opt, BARRIER);
+ break;
+ }
if (option)
set_opt(sbi->s_mount_opt, BARRIER);
else
break;
case Opt_resize:
if (!is_remount) {
- printk("EXT4-fs: resize option only available "
- "for remount\n");
+ ext4_msg(sb, KERN_ERR,
+ "resize option only available "
+ "for remount");
return 0;
}
if (match_int(&args[0], &option) != 0)
case Opt_bh:
clear_opt(sbi->s_mount_opt, NOBH);
break;
- case Opt_extents:
- set_opt (sbi->s_mount_opt, EXTENTS);
- break;
- case Opt_noextents:
- clear_opt (sbi->s_mount_opt, EXTENTS);
- break;
case Opt_i_version:
set_opt(sbi->s_mount_opt, I_VERSION);
sb->s_flags |= MS_I_VERSION;
break;
- case Opt_mballoc:
- set_opt(sbi->s_mount_opt, MBALLOC);
- break;
- case Opt_nomballoc:
- clear_opt(sbi->s_mount_opt, MBALLOC);
+ case Opt_nodelalloc:
+ clear_opt(sbi->s_mount_opt, DELALLOC);
break;
case Opt_stripe:
if (match_int(&args[0], &option))
case Opt_delalloc:
set_opt(sbi->s_mount_opt, DELALLOC);
break;
+ case Opt_block_validity:
+ set_opt(sbi->s_mount_opt, BLOCK_VALIDITY);
+ break;
+ case Opt_noblock_validity:
+ clear_opt(sbi->s_mount_opt, BLOCK_VALIDITY);
+ break;
+ case Opt_inode_readahead_blks:
+ if (match_int(&args[0], &option))
+ return 0;
+ if (option < 0 || option > (1 << 30))
+ return 0;
+ if (!is_power_of_2(option)) {
+ ext4_msg(sb, KERN_ERR,
+ "EXT4-fs: inode_readahead_blks"
+ " must be a power of 2");
+ return 0;
+ }
+ sbi->s_inode_readahead_blks = option;
+ break;
+ case Opt_journal_ioprio:
+ if (match_int(&args[0], &option))
+ return 0;
+ if (option < 0 || option > 7)
+ break;
+ *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE,
+ option);
+ break;
+ case Opt_noauto_da_alloc:
+ set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC);
+ break;
+ case Opt_auto_da_alloc:
+ if (match_int(&args[0], &option)) {
+ clear_opt(sbi->s_mount_opt, NO_AUTO_DA_ALLOC);
+ break;
+ }
+ if (option)
+ clear_opt(sbi->s_mount_opt, NO_AUTO_DA_ALLOC);
+ else
+ set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC);
+ break;
default:
- printk (KERN_ERR
- "EXT4-fs: Unrecognized mount option \"%s\" "
- "or missing value\n", p);
+ ext4_msg(sb, KERN_ERR,
+ "Unrecognized mount option \"%s\" "
+ "or missing value", p);
return 0;
}
}
(sbi->s_mount_opt & EXT4_MOUNT_GRPQUOTA)) ||
(sbi->s_qf_names[GRPQUOTA] &&
(sbi->s_mount_opt & EXT4_MOUNT_USRQUOTA))) {
- printk(KERN_ERR "EXT4-fs: old and new quota "
- "format mixing.\n");
+ ext4_msg(sb, KERN_ERR, "old and new quota "
+ "format mixing");
return 0;
}
if (!sbi->s_jquota_fmt) {
- printk(KERN_ERR "EXT4-fs: journaled quota format "
- "not specified.\n");
+ ext4_msg(sb, KERN_ERR, "journaled quota format "
+ "not specified");
return 0;
}
} else {
if (sbi->s_jquota_fmt) {
- printk(KERN_ERR "EXT4-fs: journaled quota format "
+ ext4_msg(sb, KERN_ERR, "journaled quota format "
"specified with no journaling "
- "enabled.\n");
+ "enabled");
return 0;
}
}
int res = 0;
if (le32_to_cpu(es->s_rev_level) > EXT4_MAX_SUPP_REV) {
- printk (KERN_ERR "EXT4-fs warning: revision level too high, "
- "forcing read-only mode\n");
+ ext4_msg(sb, KERN_ERR, "revision level too high, "
+ "forcing read-only mode");
res = MS_RDONLY;
}
if (read_only)
return res;
if (!(sbi->s_mount_state & EXT4_VALID_FS))
- printk (KERN_WARNING "EXT4-fs warning: mounting unchecked fs, "
- "running e2fsck is recommended\n");
+ ext4_msg(sb, KERN_WARNING, "warning: mounting unchecked fs, "
+ "running e2fsck is recommended");
else if ((sbi->s_mount_state & EXT4_ERROR_FS))
- printk (KERN_WARNING
- "EXT4-fs warning: mounting fs with errors, "
- "running e2fsck is recommended\n");
+ ext4_msg(sb, KERN_WARNING,
+ "warning: mounting fs with errors, "
+ "running e2fsck is recommended");
else if ((__s16) le16_to_cpu(es->s_max_mnt_count) >= 0 &&
le16_to_cpu(es->s_mnt_count) >=
(unsigned short) (__s16) le16_to_cpu(es->s_max_mnt_count))
- printk (KERN_WARNING
- "EXT4-fs warning: maximal mount count reached, "
- "running e2fsck is recommended\n");
+ ext4_msg(sb, KERN_WARNING,
+ "warning: maximal mount count reached, "
+ "running e2fsck is recommended");
else if (le32_to_cpu(es->s_checkinterval) &&
(le32_to_cpu(es->s_lastcheck) +
le32_to_cpu(es->s_checkinterval) <= get_seconds()))
- printk (KERN_WARNING
- "EXT4-fs warning: checktime reached, "
- "running e2fsck is recommended\n");
-#if 0
- /* @@@ We _will_ want to clear the valid bit if we find
- * inconsistencies, to force a fsck at reboot. But for
- * a plain journaled filesystem we can keep it set as
- * valid forever! :)
- */
- es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
-#endif
+ ext4_msg(sb, KERN_WARNING,
+ "warning: checktime reached, "
+ "running e2fsck is recommended");
+ if (!sbi->s_journal)
+ es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
if (!(__s16) le16_to_cpu(es->s_max_mnt_count))
es->s_max_mnt_count = cpu_to_le16(EXT4_DFL_MAX_MNT_COUNT);
le16_add_cpu(&es->s_mnt_count, 1);
es->s_mtime = cpu_to_le32(get_seconds());
ext4_update_dynamic_rev(sb);
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ if (sbi->s_journal)
+ EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
- ext4_commit_super(sb, es, 1);
+ ext4_commit_super(sb, 1);
if (test_opt(sb, DEBUG))
- printk(KERN_INFO "[EXT4 FS bs=%lu, gc=%lu, "
+ printk(KERN_INFO "[EXT4 FS bs=%lu, gc=%u, "
"bpg=%lu, ipg=%lu, mo=%04lx]\n",
sb->s_blocksize,
sbi->s_groups_count,
EXT4_INODES_PER_GROUP(sb),
sbi->s_mount_opt);
- printk(KERN_INFO "EXT4 FS on %s, ", sb->s_id);
- if (EXT4_SB(sb)->s_journal->j_inode == NULL) {
- char b[BDEVNAME_SIZE];
-
- printk("external journal on %s\n",
- bdevname(EXT4_SB(sb)->s_journal->j_dev, b));
+ if (EXT4_SB(sb)->s_journal) {
+ ext4_msg(sb, KERN_INFO, "%s journal on %s",
+ EXT4_SB(sb)->s_journal->j_inode ? "internal" :
+ "external", EXT4_SB(sb)->s_journal->j_devname);
} else {
- printk("internal journal\n");
+ ext4_msg(sb, KERN_INFO, "no journal");
}
return res;
}
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_group_desc *gdp = NULL;
- struct buffer_head *bh;
ext4_group_t flex_group_count;
ext4_group_t flex_group;
int groups_per_flex = 0;
- __u64 block_bitmap = 0;
+ size_t size;
int i;
if (!sbi->s_es->s_log_groups_per_flex) {
sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
groups_per_flex = 1 << sbi->s_log_groups_per_flex;
- flex_group_count = (sbi->s_groups_count + groups_per_flex - 1) /
- groups_per_flex;
- sbi->s_flex_groups = kmalloc(flex_group_count *
- sizeof(struct flex_groups), GFP_KERNEL);
+ /* We allocate both existing and potentially added groups */
+ flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
+ ((le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) + 1) <<
+ EXT4_DESC_PER_BLOCK_BITS(sb))) / groups_per_flex;
+ size = flex_group_count * sizeof(struct flex_groups);
+ sbi->s_flex_groups = kzalloc(size, GFP_KERNEL);
+ if (sbi->s_flex_groups == NULL) {
+ sbi->s_flex_groups = vmalloc(size);
+ if (sbi->s_flex_groups)
+ memset(sbi->s_flex_groups, 0, size);
+ }
if (sbi->s_flex_groups == NULL) {
- printk(KERN_ERR "EXT4-fs: not enough memory\n");
+ ext4_msg(sb, KERN_ERR, "not enough memory for "
+ "%u flex groups", flex_group_count);
goto failed;
}
- memset(sbi->s_flex_groups, 0, flex_group_count *
- sizeof(struct flex_groups));
-
- gdp = ext4_get_group_desc(sb, 1, &bh);
- block_bitmap = ext4_block_bitmap(sb, gdp) - 1;
for (i = 0; i < sbi->s_groups_count; i++) {
- gdp = ext4_get_group_desc(sb, i, &bh);
+ gdp = ext4_get_group_desc(sb, i, NULL);
flex_group = ext4_flex_group(sbi, i);
- sbi->s_flex_groups[flex_group].free_inodes +=
- le16_to_cpu(gdp->bg_free_inodes_count);
- sbi->s_flex_groups[flex_group].free_blocks +=
- le16_to_cpu(gdp->bg_free_blocks_count);
+ atomic_set(&sbi->s_flex_groups[flex_group].free_inodes,
+ ext4_free_inodes_count(sb, gdp));
+ atomic_set(&sbi->s_flex_groups[flex_group].free_blocks,
+ ext4_free_blks_count(sb, gdp));
+ atomic_set(&sbi->s_flex_groups[flex_group].used_dirs,
+ ext4_used_dirs_count(sb, gdp));
}
return 1;
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
flexbg_flag = 1;
- ext4_debug ("Checking group descriptors");
+ ext4_debug("Checking group descriptors");
for (i = 0; i < sbi->s_groups_count; i++) {
struct ext4_group_desc *gdp = ext4_get_group_desc(sb, i, NULL);
(EXT4_BLOCKS_PER_GROUP(sb) - 1);
block_bitmap = ext4_block_bitmap(sb, gdp);
- if (block_bitmap < first_block || block_bitmap > last_block)
- {
- printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: "
- "Block bitmap for group %lu not in group "
+ if (block_bitmap < first_block || block_bitmap > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Block bitmap for group %u not in group "
"(block %llu)!", i, block_bitmap);
return 0;
}
inode_bitmap = ext4_inode_bitmap(sb, gdp);
- if (inode_bitmap < first_block || inode_bitmap > last_block)
- {
- printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: "
- "Inode bitmap for group %lu not in group "
+ if (inode_bitmap < first_block || inode_bitmap > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode bitmap for group %u not in group "
"(block %llu)!", i, inode_bitmap);
return 0;
}
inode_table = ext4_inode_table(sb, gdp);
if (inode_table < first_block ||
- inode_table + sbi->s_itb_per_group - 1 > last_block)
- {
- printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: "
- "Inode table for group %lu not in group "
+ inode_table + sbi->s_itb_per_group - 1 > last_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode table for group %u not in group "
"(block %llu)!", i, inode_table);
return 0;
}
+ ext4_lock_group(sb, i);
if (!ext4_group_desc_csum_verify(sbi, i, gdp)) {
- printk(KERN_ERR "EXT4-fs: ext4_check_descriptors: "
- "Checksum for group %lu failed (%u!=%u)\n",
- i, le16_to_cpu(ext4_group_desc_csum(sbi, i,
- gdp)), le16_to_cpu(gdp->bg_checksum));
- return 0;
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Checksum for group %u failed (%u!=%u)",
+ i, le16_to_cpu(ext4_group_desc_csum(sbi, i,
+ gdp)), le16_to_cpu(gdp->bg_checksum));
+ if (!(sb->s_flags & MS_RDONLY)) {
+ ext4_unlock_group(sb, i);
+ return 0;
+ }
}
+ ext4_unlock_group(sb, i);
if (!flexbg_flag)
first_block += EXT4_BLOCKS_PER_GROUP(sb);
}
ext4_free_blocks_count_set(sbi->s_es, ext4_count_free_blocks(sb));
- sbi->s_es->s_free_inodes_count=cpu_to_le32(ext4_count_free_inodes(sb));
+ sbi->s_es->s_free_inodes_count =cpu_to_le32(ext4_count_free_inodes(sb));
return 1;
}
* e2fsck was run on this filesystem, and it must have already done the orphan
* inode cleanup for us, so we can safely abort without any further action.
*/
-static void ext4_orphan_cleanup (struct super_block * sb,
- struct ext4_super_block * es)
+static void ext4_orphan_cleanup(struct super_block *sb,
+ struct ext4_super_block *es)
{
unsigned int s_flags = sb->s_flags;
int nr_orphans = 0, nr_truncates = 0;
}
if (bdev_read_only(sb->s_bdev)) {
- printk(KERN_ERR "EXT4-fs: write access "
- "unavailable, skipping orphan cleanup.\n");
+ ext4_msg(sb, KERN_ERR, "write access "
+ "unavailable, skipping orphan cleanup");
return;
}
}
if (s_flags & MS_RDONLY) {
- printk(KERN_INFO "EXT4-fs: %s: orphan cleanup on readonly fs\n",
- sb->s_id);
+ ext4_msg(sb, KERN_INFO, "orphan cleanup on readonly fs");
sb->s_flags &= ~MS_RDONLY;
}
#ifdef CONFIG_QUOTA
if (EXT4_SB(sb)->s_qf_names[i]) {
int ret = ext4_quota_on_mount(sb, i);
if (ret < 0)
- printk(KERN_ERR
- "EXT4-fs: Cannot turn on journaled "
- "quota: error %d\n", ret);
+ ext4_msg(sb, KERN_ERR,
+ "Cannot turn on journaled "
+ "quota: error %d", ret);
}
}
#endif
}
list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan);
- DQUOT_INIT(inode);
+ vfs_dq_init(inode);
if (inode->i_nlink) {
- printk(KERN_DEBUG
- "%s: truncating inode %lu to %Ld bytes\n",
+ ext4_msg(sb, KERN_DEBUG,
+ "%s: truncating inode %lu to %lld bytes",
__func__, inode->i_ino, inode->i_size);
- jbd_debug(2, "truncating inode %lu to %Ld bytes\n",
+ jbd_debug(2, "truncating inode %lu to %lld bytes\n",
inode->i_ino, inode->i_size);
ext4_truncate(inode);
nr_truncates++;
} else {
- printk(KERN_DEBUG
- "%s: deleting unreferenced inode %lu\n",
+ ext4_msg(sb, KERN_DEBUG,
+ "%s: deleting unreferenced inode %lu",
__func__, inode->i_ino);
jbd_debug(2, "deleting unreferenced inode %lu\n",
inode->i_ino);
iput(inode); /* The delete magic happens here! */
}
-#define PLURAL(x) (x), ((x)==1) ? "" : "s"
+#define PLURAL(x) (x), ((x) == 1) ? "" : "s"
if (nr_orphans)
- printk(KERN_INFO "EXT4-fs: %s: %d orphan inode%s deleted\n",
- sb->s_id, PLURAL(nr_orphans));
+ ext4_msg(sb, KERN_INFO, "%d orphan inode%s deleted",
+ PLURAL(nr_orphans));
if (nr_truncates)
- printk(KERN_INFO "EXT4-fs: %s: %d truncate%s cleaned up\n",
- sb->s_id, PLURAL(nr_truncates));
+ ext4_msg(sb, KERN_INFO, "%d truncate%s cleaned up",
+ PLURAL(nr_truncates));
#ifdef CONFIG_QUOTA
/* Turn quotas off */
for (i = 0; i < MAXQUOTAS; i++) {
#endif
sb->s_flags = s_flags; /* Restore MS_RDONLY status */
}
+
/*
* Maximal extent format file size.
* Resulting logical blkno at s_maxbytes must fit in our on-disk
*
* Note, this does *not* consider any metadata overhead for vfs i_blocks.
*/
-static loff_t ext4_max_size(int blkbits)
+static loff_t ext4_max_size(int blkbits, int has_huge_files)
{
loff_t res;
loff_t upper_limit = MAX_LFS_FILESIZE;
/* small i_blocks in vfs inode? */
- if (sizeof(blkcnt_t) < sizeof(u64)) {
+ if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
/*
- * CONFIG_LSF is not enabled implies the inode
+ * CONFIG_LBD is not enabled implies the inode
* i_block represent total blocks in 512 bytes
* 32 == size of vfs inode i_blocks * 8
*/
* block limit, and also a limit of (2^48 - 1) 512-byte sectors in i_blocks.
* We need to be 1 filesystem block less than the 2^48 sector limit.
*/
-static loff_t ext4_max_bitmap_size(int bits)
+static loff_t ext4_max_bitmap_size(int bits, int has_huge_files)
{
loff_t res = EXT4_NDIR_BLOCKS;
int meta_blocks;
loff_t upper_limit;
- /* This is calculated to be the largest file size for a
- * dense, bitmapped file such that the total number of
- * sectors in the file, including data and all indirect blocks,
- * does not exceed 2^48 -1
- * __u32 i_blocks_lo and _u16 i_blocks_high representing the
- * total number of 512 bytes blocks of the file
+ /* This is calculated to be the largest file size for a dense, block
+ * mapped file such that the file's total number of 512-byte sectors,
+ * including data and all indirect blocks, does not exceed (2^48 - 1).
+ *
+ * __u32 i_blocks_lo and _u16 i_blocks_high represent the total
+ * number of 512-byte sectors of the file.
*/
- if (sizeof(blkcnt_t) < sizeof(u64)) {
+ if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
/*
- * CONFIG_LSF is not enabled implies the inode
- * i_block represent total blocks in 512 bytes
- * 32 == size of vfs inode i_blocks * 8
+ * !has_huge_files or CONFIG_LBD not enabled implies that
+ * the inode i_block field represents total file blocks in
+ * 2^32 512-byte sectors == size of vfs inode i_blocks * 8
*/
upper_limit = (1LL << 32) - 1;
}
static ext4_fsblk_t descriptor_loc(struct super_block *sb,
- ext4_fsblk_t logical_sb_block, int nr)
+ ext4_fsblk_t logical_sb_block, int nr)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_group_t bg, first_meta_bg;
bg = sbi->s_desc_per_block * nr;
if (ext4_bg_has_super(sb, bg))
has_super = 1;
+
return (has_super + ext4_group_first_block_no(sb, bg));
}
return 0;
}
-static int ext4_fill_super (struct super_block *sb, void *data, int silent)
+/* sysfs supprt */
+
+struct ext4_attr {
+ struct attribute attr;
+ ssize_t (*show)(struct ext4_attr *, struct ext4_sb_info *, char *);
+ ssize_t (*store)(struct ext4_attr *, struct ext4_sb_info *,
+ const char *, size_t);
+ int offset;
+};
+
+static int parse_strtoul(const char *buf,
+ unsigned long max, unsigned long *value)
+{
+ char *endp;
+
+ while (*buf && isspace(*buf))
+ buf++;
+ *value = simple_strtoul(buf, &endp, 0);
+ while (*endp && isspace(*endp))
+ endp++;
+ if (*endp || *value > max)
+ return -EINVAL;
+
+ return 0;
+}
+
+static ssize_t delayed_allocation_blocks_show(struct ext4_attr *a,
+ struct ext4_sb_info *sbi,
+ char *buf)
+{
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (s64) percpu_counter_sum(&sbi->s_dirtyblocks_counter));
+}
+
+static ssize_t session_write_kbytes_show(struct ext4_attr *a,
+ struct ext4_sb_info *sbi, char *buf)
+{
+ struct super_block *sb = sbi->s_buddy_cache->i_sb;
+
+ return snprintf(buf, PAGE_SIZE, "%lu\n",
+ (part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ sbi->s_sectors_written_start) >> 1);
+}
+
+static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
+ struct ext4_sb_info *sbi, char *buf)
+{
+ struct super_block *sb = sbi->s_buddy_cache->i_sb;
+
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ sbi->s_kbytes_written +
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ EXT4_SB(sb)->s_sectors_written_start) >> 1));
+}
+
+static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
+ struct ext4_sb_info *sbi,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+
+ if (parse_strtoul(buf, 0x40000000, &t))
+ return -EINVAL;
+
+ if (!is_power_of_2(t))
+ return -EINVAL;
+
+ sbi->s_inode_readahead_blks = t;
+ return count;
+}
+
+static ssize_t sbi_ui_show(struct ext4_attr *a,
+ struct ext4_sb_info *sbi, char *buf)
+{
+ unsigned int *ui = (unsigned int *) (((char *) sbi) + a->offset);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
+}
+
+static ssize_t sbi_ui_store(struct ext4_attr *a,
+ struct ext4_sb_info *sbi,
+ const char *buf, size_t count)
+{
+ unsigned int *ui = (unsigned int *) (((char *) sbi) + a->offset);
+ unsigned long t;
+
+ if (parse_strtoul(buf, 0xffffffff, &t))
+ return -EINVAL;
+ *ui = t;
+ return count;
+}
+
+#define EXT4_ATTR_OFFSET(_name,_mode,_show,_store,_elname) \
+static struct ext4_attr ext4_attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
+ .offset = offsetof(struct ext4_sb_info, _elname), \
+}
+#define EXT4_ATTR(name, mode, show, store) \
+static struct ext4_attr ext4_attr_##name = __ATTR(name, mode, show, store)
+
+#define EXT4_RO_ATTR(name) EXT4_ATTR(name, 0444, name##_show, NULL)
+#define EXT4_RW_ATTR(name) EXT4_ATTR(name, 0644, name##_show, name##_store)
+#define EXT4_RW_ATTR_SBI_UI(name, elname) \
+ EXT4_ATTR_OFFSET(name, 0644, sbi_ui_show, sbi_ui_store, elname)
+#define ATTR_LIST(name) &ext4_attr_##name.attr
+
+EXT4_RO_ATTR(delayed_allocation_blocks);
+EXT4_RO_ATTR(session_write_kbytes);
+EXT4_RO_ATTR(lifetime_write_kbytes);
+EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, sbi_ui_show,
+ inode_readahead_blks_store, s_inode_readahead_blks);
+EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats);
+EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan);
+EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan);
+EXT4_RW_ATTR_SBI_UI(mb_order2_req, s_mb_order2_reqs);
+EXT4_RW_ATTR_SBI_UI(mb_stream_req, s_mb_stream_request);
+EXT4_RW_ATTR_SBI_UI(mb_group_prealloc, s_mb_group_prealloc);
+
+static struct attribute *ext4_attrs[] = {
+ ATTR_LIST(delayed_allocation_blocks),
+ ATTR_LIST(session_write_kbytes),
+ ATTR_LIST(lifetime_write_kbytes),
+ ATTR_LIST(inode_readahead_blks),
+ ATTR_LIST(mb_stats),
+ ATTR_LIST(mb_max_to_scan),
+ ATTR_LIST(mb_min_to_scan),
+ ATTR_LIST(mb_order2_req),
+ ATTR_LIST(mb_stream_req),
+ ATTR_LIST(mb_group_prealloc),
+ NULL,
+};
+
+static ssize_t ext4_attr_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
+ s_kobj);
+ struct ext4_attr *a = container_of(attr, struct ext4_attr, attr);
+
+ return a->show ? a->show(a, sbi, buf) : 0;
+}
+
+static ssize_t ext4_attr_store(struct kobject *kobj,
+ struct attribute *attr,
+ const char *buf, size_t len)
+{
+ struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
+ s_kobj);
+ struct ext4_attr *a = container_of(attr, struct ext4_attr, attr);
+
+ return a->store ? a->store(a, sbi, buf, len) : 0;
+}
+
+static void ext4_sb_release(struct kobject *kobj)
+{
+ struct ext4_sb_info *sbi = container_of(kobj, struct ext4_sb_info,
+ s_kobj);
+ complete(&sbi->s_kobj_unregister);
+}
+
+
+static struct sysfs_ops ext4_attr_ops = {
+ .show = ext4_attr_show,
+ .store = ext4_attr_store,
+};
+
+static struct kobj_type ext4_ktype = {
+ .default_attrs = ext4_attrs,
+ .sysfs_ops = &ext4_attr_ops,
+ .release = ext4_sb_release,
+};
+
+static int ext4_fill_super(struct super_block *sb, void *data, int silent)
__releases(kernel_lock)
__acquires(kernel_lock)
-
{
- struct buffer_head * bh;
+ struct buffer_head *bh;
struct ext4_super_block *es = NULL;
struct ext4_sb_info *sbi;
ext4_fsblk_t block;
ext4_fsblk_t sb_block = get_sb_block(&data);
ext4_fsblk_t logical_sb_block;
unsigned long offset = 0;
- unsigned int journal_inum = 0;
unsigned long journal_devnum = 0;
unsigned long def_mount_opts;
struct inode *root;
+ char *cp;
+ const char *descr;
int ret = -EINVAL;
int blocksize;
- int db_count;
- int i;
- int needs_recovery;
- __le32 features;
+ unsigned int db_count;
+ unsigned int i;
+ int needs_recovery, has_huge_files;
+ int features;
__u64 blocks_count;
int err;
+ unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
+
+ sbi->s_blockgroup_lock =
+ kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
+ if (!sbi->s_blockgroup_lock) {
+ kfree(sbi);
+ return -ENOMEM;
+ }
sb->s_fs_info = sbi;
sbi->s_mount_opt = 0;
sbi->s_resuid = EXT4_DEF_RESUID;
sbi->s_resgid = EXT4_DEF_RESGID;
+ sbi->s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS;
sbi->s_sb_block = sb_block;
+ sbi->s_sectors_written_start = part_stat_read(sb->s_bdev->bd_part,
+ sectors[1]);
unlock_kernel();
+ /* Cleanup superblock name */
+ for (cp = sb->s_id; (cp = strchr(cp, '/'));)
+ *cp = '!';
+
blocksize = sb_min_blocksize(sb, EXT4_MIN_BLOCK_SIZE);
if (!blocksize) {
- printk(KERN_ERR "EXT4-fs: unable to set blocksize\n");
+ ext4_msg(sb, KERN_ERR, "unable to set blocksize");
goto out_fail;
}
}
if (!(bh = sb_bread(sb, logical_sb_block))) {
- printk (KERN_ERR "EXT4-fs: unable to read superblock\n");
+ ext4_msg(sb, KERN_ERR, "unable to read superblock");
goto out_fail;
}
/*
sb->s_magic = le16_to_cpu(es->s_magic);
if (sb->s_magic != EXT4_SUPER_MAGIC)
goto cantfind_ext4;
+ sbi->s_kbytes_written = le64_to_cpu(es->s_kbytes_written);
/* Set defaults before we parse the mount options */
def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
set_opt(sbi->s_mount_opt, GRPID);
if (def_mount_opts & EXT4_DEFM_UID16)
set_opt(sbi->s_mount_opt, NO_UID32);
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
if (def_mount_opts & EXT4_DEFM_XATTR_USER)
set_opt(sbi->s_mount_opt, XATTR_USER);
#endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
if (def_mount_opts & EXT4_DEFM_ACL)
set_opt(sbi->s_mount_opt, POSIX_ACL);
#endif
sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
+ sbi->s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ;
+ sbi->s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME;
+ sbi->s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME;
+ sbi->s_mb_history_max = default_mb_history_length;
- set_opt(sbi->s_mount_opt, RESERVATION);
set_opt(sbi->s_mount_opt, BARRIER);
/*
- * turn on extents feature by default in ext4 filesystem
- * User -o noextents to turn it off
- */
- set_opt(sbi->s_mount_opt, EXTENTS);
- /*
- * turn on mballoc feature by default in ext4 filesystem
- * User -o nomballoc to turn it off
+ * enable delayed allocation by default
+ * Use -o nodelalloc to turn it off
*/
- set_opt(sbi->s_mount_opt, MBALLOC);
+ set_opt(sbi->s_mount_opt, DELALLOC);
- if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum,
- NULL, 0))
+ if (!parse_options((char *) data, sb, &journal_devnum,
+ &journal_ioprio, NULL, 0))
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
(EXT4_HAS_COMPAT_FEATURE(sb, ~0U) ||
EXT4_HAS_RO_COMPAT_FEATURE(sb, ~0U) ||
EXT4_HAS_INCOMPAT_FEATURE(sb, ~0U)))
- printk(KERN_WARNING
- "EXT4-fs warning: feature flags set on rev 0 fs, "
- "running e2fsck is recommended\n");
-
- /*
- * Since ext4 is still considered development code, we require
- * that the TEST_FILESYS flag in s->flags be set.
- */
- if (!(le32_to_cpu(es->s_flags) & EXT2_FLAGS_TEST_FILESYS)) {
- printk(KERN_WARNING "EXT4-fs: %s: not marked "
- "OK to use with test code.\n", sb->s_id);
- goto failed_mount;
- }
+ ext4_msg(sb, KERN_WARNING,
+ "feature flags set on rev 0 fs, "
+ "running e2fsck is recommended");
/*
* Check feature flags regardless of the revision level, since we
*/
features = EXT4_HAS_INCOMPAT_FEATURE(sb, ~EXT4_FEATURE_INCOMPAT_SUPP);
if (features) {
- printk(KERN_ERR "EXT4-fs: %s: couldn't mount because of "
- "unsupported optional features (%x).\n",
- sb->s_id, le32_to_cpu(features));
+ ext4_msg(sb, KERN_ERR,
+ "Couldn't mount because of "
+ "unsupported optional features (%x)",
+ (le32_to_cpu(EXT4_SB(sb)->s_es->s_feature_incompat) &
+ ~EXT4_FEATURE_INCOMPAT_SUPP));
goto failed_mount;
}
features = EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT4_FEATURE_RO_COMPAT_SUPP);
if (!(sb->s_flags & MS_RDONLY) && features) {
- printk(KERN_ERR "EXT4-fs: %s: couldn't mount RDWR because of "
- "unsupported optional features (%x).\n",
- sb->s_id, le32_to_cpu(features));
+ ext4_msg(sb, KERN_ERR,
+ "Couldn't mount RDWR because of "
+ "unsupported optional features (%x)",
+ (le32_to_cpu(EXT4_SB(sb)->s_es->s_feature_ro_compat) &
+ ~EXT4_FEATURE_RO_COMPAT_SUPP));
goto failed_mount;
}
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
+ has_huge_files = EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_HUGE_FILE);
+ if (has_huge_files) {
/*
* Large file size enabled file system can only be
- * mount if kernel is build with CONFIG_LSF
+ * mount if kernel is build with CONFIG_LBD
*/
if (sizeof(root->i_blocks) < sizeof(u64) &&
!(sb->s_flags & MS_RDONLY)) {
- printk(KERN_ERR "EXT4-fs: %s: Filesystem with huge "
+ ext4_msg(sb, KERN_ERR, "Filesystem with huge "
"files cannot be mounted read-write "
- "without CONFIG_LSF.\n", sb->s_id);
+ "without CONFIG_LBD");
goto failed_mount;
}
}
if (blocksize < EXT4_MIN_BLOCK_SIZE ||
blocksize > EXT4_MAX_BLOCK_SIZE) {
- printk(KERN_ERR
- "EXT4-fs: Unsupported filesystem blocksize %d on %s.\n",
- blocksize, sb->s_id);
+ ext4_msg(sb, KERN_ERR,
+ "Unsupported filesystem blocksize %d", blocksize);
goto failed_mount;
}
if (sb->s_blocksize != blocksize) {
-
/* Validate the filesystem blocksize */
if (!sb_set_blocksize(sb, blocksize)) {
- printk(KERN_ERR "EXT4-fs: bad block size %d.\n",
+ ext4_msg(sb, KERN_ERR, "bad block size %d",
blocksize);
goto failed_mount;
}
- brelse (bh);
+ brelse(bh);
logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE;
offset = do_div(logical_sb_block, blocksize);
bh = sb_bread(sb, logical_sb_block);
if (!bh) {
- printk(KERN_ERR
- "EXT4-fs: Can't read superblock on 2nd try.\n");
+ ext4_msg(sb, KERN_ERR,
+ "Can't read superblock on 2nd try");
goto failed_mount;
}
es = (struct ext4_super_block *)(((char *)bh->b_data) + offset);
sbi->s_es = es;
if (es->s_magic != cpu_to_le16(EXT4_SUPER_MAGIC)) {
- printk (KERN_ERR
- "EXT4-fs: Magic mismatch, very weird !\n");
+ ext4_msg(sb, KERN_ERR,
+ "Magic mismatch, very weird!");
goto failed_mount;
}
}
- sbi->s_bitmap_maxbytes = ext4_max_bitmap_size(sb->s_blocksize_bits);
- sb->s_maxbytes = ext4_max_size(sb->s_blocksize_bits);
+ sbi->s_bitmap_maxbytes = ext4_max_bitmap_size(sb->s_blocksize_bits,
+ has_huge_files);
+ sb->s_maxbytes = ext4_max_size(sb->s_blocksize_bits, has_huge_files);
if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV) {
sbi->s_inode_size = EXT4_GOOD_OLD_INODE_SIZE;
if ((sbi->s_inode_size < EXT4_GOOD_OLD_INODE_SIZE) ||
(!is_power_of_2(sbi->s_inode_size)) ||
(sbi->s_inode_size > blocksize)) {
- printk (KERN_ERR
- "EXT4-fs: unsupported inode size: %d\n",
- sbi->s_inode_size);
+ ext4_msg(sb, KERN_ERR,
+ "unsupported inode size: %d",
+ sbi->s_inode_size);
goto failed_mount;
}
if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE)
sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2);
}
+
sbi->s_desc_size = le16_to_cpu(es->s_desc_size);
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
sbi->s_desc_size > EXT4_MAX_DESC_SIZE ||
!is_power_of_2(sbi->s_desc_size)) {
- printk(KERN_ERR
- "EXT4-fs: unsupported descriptor size %lu\n",
+ ext4_msg(sb, KERN_ERR,
+ "unsupported descriptor size %lu",
sbi->s_desc_size);
goto failed_mount;
}
} else
sbi->s_desc_size = EXT4_MIN_DESC_SIZE;
+
sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group);
sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
if (EXT4_INODE_SIZE(sb) == 0 || EXT4_INODES_PER_GROUP(sb) == 0)
goto cantfind_ext4;
+
sbi->s_inodes_per_block = blocksize / EXT4_INODE_SIZE(sb);
if (sbi->s_inodes_per_block == 0)
goto cantfind_ext4;
sbi->s_mount_state = le16_to_cpu(es->s_state);
sbi->s_addr_per_block_bits = ilog2(EXT4_ADDR_PER_BLOCK(sb));
sbi->s_desc_per_block_bits = ilog2(EXT4_DESC_PER_BLOCK(sb));
- for (i=0; i < 4; i++)
+
+ for (i = 0; i < 4; i++)
sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]);
sbi->s_def_hash_version = es->s_def_hash_version;
+ i = le32_to_cpu(es->s_flags);
+ if (i & EXT2_FLAGS_UNSIGNED_HASH)
+ sbi->s_hash_unsigned = 3;
+ else if ((i & EXT2_FLAGS_SIGNED_HASH) == 0) {
+#ifdef __CHAR_UNSIGNED__
+ es->s_flags |= cpu_to_le32(EXT2_FLAGS_UNSIGNED_HASH);
+ sbi->s_hash_unsigned = 3;
+#else
+ es->s_flags |= cpu_to_le32(EXT2_FLAGS_SIGNED_HASH);
+#endif
+ sb->s_dirt = 1;
+ }
if (sbi->s_blocks_per_group > blocksize * 8) {
- printk (KERN_ERR
- "EXT4-fs: #blocks per group too big: %lu\n",
- sbi->s_blocks_per_group);
+ ext4_msg(sb, KERN_ERR,
+ "#blocks per group too big: %lu",
+ sbi->s_blocks_per_group);
goto failed_mount;
}
if (sbi->s_inodes_per_group > blocksize * 8) {
- printk (KERN_ERR
- "EXT4-fs: #inodes per group too big: %lu\n",
- sbi->s_inodes_per_group);
+ ext4_msg(sb, KERN_ERR,
+ "#inodes per group too big: %lu",
+ sbi->s_inodes_per_group);
goto failed_mount;
}
if (ext4_blocks_count(es) >
(sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) {
- printk(KERN_ERR "EXT4-fs: filesystem on %s:"
- " too large to mount safely\n", sb->s_id);
+ ext4_msg(sb, KERN_ERR, "filesystem"
+ " too large to mount safely");
if (sizeof(sector_t) < 8)
- printk(KERN_WARNING "EXT4-fs: CONFIG_LBD not "
- "enabled\n");
+ ext4_msg(sb, KERN_WARNING, "CONFIG_LBD not enabled");
goto failed_mount;
}
if (EXT4_BLOCKS_PER_GROUP(sb) == 0)
goto cantfind_ext4;
- /* ensure blocks_count calculation below doesn't sign-extend */
- if (ext4_blocks_count(es) + EXT4_BLOCKS_PER_GROUP(sb) <
- le32_to_cpu(es->s_first_data_block) + 1) {
- printk(KERN_WARNING "EXT4-fs: bad geometry: block count %llu, "
- "first data block %u, blocks per group %lu\n",
- ext4_blocks_count(es),
- le32_to_cpu(es->s_first_data_block),
- EXT4_BLOCKS_PER_GROUP(sb));
+ /* check blocks count against device size */
+ blocks_count = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+ if (blocks_count && ext4_blocks_count(es) > blocks_count) {
+ ext4_msg(sb, KERN_WARNING, "bad geometry: block count %llu "
+ "exceeds size of device (%llu blocks)",
+ ext4_blocks_count(es), blocks_count);
+ goto failed_mount;
+ }
+
+ /*
+ * It makes no sense for the first data block to be beyond the end
+ * of the filesystem.
+ */
+ if (le32_to_cpu(es->s_first_data_block) >= ext4_blocks_count(es)) {
+ ext4_msg(sb, KERN_WARNING, "bad geometry: first data"
+ "block %u is beyond end of filesystem (%llu)",
+ le32_to_cpu(es->s_first_data_block),
+ ext4_blocks_count(es));
goto failed_mount;
}
blocks_count = (ext4_blocks_count(es) -
le32_to_cpu(es->s_first_data_block) +
EXT4_BLOCKS_PER_GROUP(sb) - 1);
do_div(blocks_count, EXT4_BLOCKS_PER_GROUP(sb));
+ if (blocks_count > ((uint64_t)1<<32) - EXT4_DESC_PER_BLOCK(sb)) {
+ ext4_msg(sb, KERN_WARNING, "groups count too large: %u "
+ "(block count %llu, first data block %u, "
+ "blocks per group %lu)", sbi->s_groups_count,
+ ext4_blocks_count(es),
+ le32_to_cpu(es->s_first_data_block),
+ EXT4_BLOCKS_PER_GROUP(sb));
+ goto failed_mount;
+ }
sbi->s_groups_count = blocks_count;
db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) /
EXT4_DESC_PER_BLOCK(sb);
- sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *),
+ sbi->s_group_desc = kmalloc(db_count * sizeof(struct buffer_head *),
GFP_KERNEL);
if (sbi->s_group_desc == NULL) {
- printk (KERN_ERR "EXT4-fs: not enough memory\n");
+ ext4_msg(sb, KERN_ERR, "not enough memory");
goto failed_mount;
}
- bgl_lock_init(&sbi->s_blockgroup_lock);
+#ifdef CONFIG_PROC_FS
+ if (ext4_proc_root)
+ sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
+#endif
+
+ bgl_lock_init(sbi->s_blockgroup_lock);
for (i = 0; i < db_count; i++) {
block = descriptor_loc(sb, logical_sb_block, i);
sbi->s_group_desc[i] = sb_bread(sb, block);
if (!sbi->s_group_desc[i]) {
- printk (KERN_ERR "EXT4-fs: "
- "can't read group descriptor %d\n", i);
+ ext4_msg(sb, KERN_ERR,
+ "can't read group descriptor %d", i);
db_count = i;
goto failed_mount2;
}
}
- if (!ext4_check_descriptors (sb)) {
- printk(KERN_ERR "EXT4-fs: group descriptors corrupted!\n");
+ if (!ext4_check_descriptors(sb)) {
+ ext4_msg(sb, KERN_ERR, "group descriptors corrupted!");
goto failed_mount2;
}
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
if (!ext4_fill_flex_info(sb)) {
- printk(KERN_ERR
- "EXT4-fs: unable to initialize "
- "flex_bg meta info!\n");
+ ext4_msg(sb, KERN_ERR,
+ "unable to initialize "
+ "flex_bg meta info!");
goto failed_mount2;
}
err = percpu_counter_init(&sbi->s_dirs_counter,
ext4_count_dirs(sb));
}
+ if (!err) {
+ err = percpu_counter_init(&sbi->s_dirtyblocks_counter, 0);
+ }
if (err) {
- printk(KERN_ERR "EXT4-fs: insufficient memory\n");
+ ext4_msg(sb, KERN_ERR, "insufficient memory");
goto failed_mount3;
}
- /* per fileystem reservation list head & lock */
- spin_lock_init(&sbi->s_rsv_window_lock);
- sbi->s_rsv_window_root = RB_ROOT;
- /* Add a single, static dummy reservation to the start of the
- * reservation window list --- it gives us a placeholder for
- * append-at-start-of-list which makes the allocation logic
- * _much_ simpler. */
- sbi->s_rsv_window_head.rsv_start = EXT4_RESERVE_WINDOW_NOT_ALLOCATED;
- sbi->s_rsv_window_head.rsv_end = EXT4_RESERVE_WINDOW_NOT_ALLOCATED;
- sbi->s_rsv_window_head.rsv_alloc_hit = 0;
- sbi->s_rsv_window_head.rsv_goal_size = 0;
- ext4_rsv_window_add(sb, &sbi->s_rsv_window_head);
-
sbi->s_stripe = ext4_get_stripe_size(sbi);
/*
* set up enough so that it can read an inode
*/
- sb->s_op = &ext4_sops;
+ if (!test_opt(sb, NOLOAD) &&
+ EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL))
+ sb->s_op = &ext4_sops;
+ else
+ sb->s_op = &ext4_nojournal_sops;
sb->s_export_op = &ext4_export_ops;
sb->s_xattr = ext4_xattr_handlers;
#ifdef CONFIG_QUOTA
sb->dq_op = &ext4_quota_operations;
#endif
INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */
+ mutex_init(&sbi->s_orphan_lock);
+ mutex_init(&sbi->s_resize_lock);
sb->s_root = NULL;
goto failed_mount3;
if (!(sb->s_flags & MS_RDONLY) &&
EXT4_SB(sb)->s_journal->j_failed_commit) {
- printk(KERN_CRIT "EXT4-fs error (device %s): "
+ ext4_msg(sb, KERN_CRIT, "error: "
"ext4_fill_super: Journal transaction "
- "%u is corrupt\n", sb->s_id,
+ "%u is corrupt",
EXT4_SB(sb)->s_journal->j_failed_commit);
- if (test_opt (sb, ERRORS_RO)) {
- printk (KERN_CRIT
- "Mounting filesystem read-only\n");
+ if (test_opt(sb, ERRORS_RO)) {
+ ext4_msg(sb, KERN_CRIT,
+ "Mounting filesystem read-only");
sb->s_flags |= MS_RDONLY;
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
if (test_opt(sb, ERRORS_PANIC)) {
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
- ext4_commit_super(sb, es, 1);
- printk(KERN_CRIT
- "EXT4-fs (device %s): mount failed\n",
- sb->s_id);
+ ext4_commit_super(sb, 1);
goto failed_mount4;
}
}
- } else if (journal_inum) {
- if (ext4_create_journal(sb, es, journal_inum))
- goto failed_mount3;
+ } else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) &&
+ EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
+ ext4_msg(sb, KERN_ERR, "required journal recovery "
+ "suppressed and not mounted read-only");
+ goto failed_mount4;
} else {
- if (!silent)
- printk (KERN_ERR
- "ext4: No journal on filesystem on %s\n",
- sb->s_id);
- goto failed_mount3;
+ clear_opt(sbi->s_mount_opt, DATA_FLAGS);
+ set_opt(sbi->s_mount_opt, WRITEBACK_DATA);
+ sbi->s_journal = NULL;
+ needs_recovery = 0;
+ goto no_journal;
}
if (ext4_blocks_count(es) > 0xffffffffULL &&
!jbd2_journal_set_features(EXT4_SB(sb)->s_journal, 0, 0,
JBD2_FEATURE_INCOMPAT_64BIT)) {
- printk(KERN_ERR "ext4: Failed to set 64-bit journal feature\n");
+ ext4_msg(sb, KERN_ERR, "Failed to set 64-bit journal feature");
goto failed_mount4;
}
case EXT4_MOUNT_WRITEBACK_DATA:
if (!jbd2_journal_check_available_features
(sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)) {
- printk(KERN_ERR "EXT4-fs: Journal does not support "
- "requested data journaling mode\n");
+ ext4_msg(sb, KERN_ERR, "Journal does not support "
+ "requested data journaling mode");
goto failed_mount4;
}
default:
break;
}
+ set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
+
+no_journal:
if (test_opt(sb, NOBH)) {
if (!(test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)) {
- printk(KERN_WARNING "EXT4-fs: Ignoring nobh option - "
- "its supported only with writeback mode\n");
+ ext4_msg(sb, KERN_WARNING, "Ignoring nobh option - "
+ "its supported only with writeback mode");
clear_opt(sbi->s_mount_opt, NOBH);
}
}
root = ext4_iget(sb, EXT4_ROOT_INO);
if (IS_ERR(root)) {
- printk(KERN_ERR "EXT4-fs: get root inode failed\n");
+ ext4_msg(sb, KERN_ERR, "get root inode failed");
ret = PTR_ERR(root);
goto failed_mount4;
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
iput(root);
- printk(KERN_ERR "EXT4-fs: corrupt root inode, run e2fsck\n");
+ ext4_msg(sb, KERN_ERR, "corrupt root inode, run e2fsck");
goto failed_mount4;
}
sb->s_root = d_alloc_root(root);
if (!sb->s_root) {
- printk(KERN_ERR "EXT4-fs: get root dentry failed\n");
+ ext4_msg(sb, KERN_ERR, "get root dentry failed");
iput(root);
ret = -ENOMEM;
goto failed_mount4;
}
- ext4_setup_super (sb, es, sb->s_flags & MS_RDONLY);
+ ext4_setup_super(sb, es, sb->s_flags & MS_RDONLY);
/* determine the minimum size of new large inodes, if present */
if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) {
sbi->s_inode_size) {
sbi->s_want_extra_isize = sizeof(struct ext4_inode) -
EXT4_GOOD_OLD_INODE_SIZE;
- printk(KERN_INFO "EXT4-fs: required extra inode space not"
- "available.\n");
+ ext4_msg(sb, KERN_INFO, "required extra inode space not"
+ "available");
}
- /*
- * akpm: core read_super() calls in here with the superblock locked.
- * That deadlocks, because orphan cleanup needs to lock the superblock
- * in numerous places. Here we just pop the lock - it's relatively
- * harmless, because we are now ready to accept write_super() requests,
- * and aviro says that's the only reason for hanging onto the
- * superblock lock.
- */
+ if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
+ ext4_msg(sb, KERN_WARNING, "Ignoring delalloc option - "
+ "requested data journaling mode");
+ clear_opt(sbi->s_mount_opt, DELALLOC);
+ } else if (test_opt(sb, DELALLOC))
+ ext4_msg(sb, KERN_INFO, "delayed allocation enabled");
+
+ err = ext4_setup_system_zone(sb);
+ if (err) {
+ ext4_msg(sb, KERN_ERR, "failed to initialize system "
+ "zone (%d)\n", err);
+ goto failed_mount4;
+ }
+
+ ext4_ext_init(sb);
+ err = ext4_mb_init(sb, needs_recovery);
+ if (err) {
+ ext4_msg(sb, KERN_ERR, "failed to initalize mballoc (%d)",
+ err);
+ goto failed_mount4;
+ }
+
+ sbi->s_kobj.kset = ext4_kset;
+ init_completion(&sbi->s_kobj_unregister);
+ err = kobject_init_and_add(&sbi->s_kobj, &ext4_ktype, NULL,
+ "%s", sb->s_id);
+ if (err) {
+ ext4_mb_release(sb);
+ ext4_ext_release(sb);
+ goto failed_mount4;
+ };
+
EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS;
ext4_orphan_cleanup(sb, es);
EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS;
- if (needs_recovery)
- printk (KERN_INFO "EXT4-fs: recovery complete.\n");
- ext4_mark_recovery_complete(sb, es);
- printk (KERN_INFO "EXT4-fs: mounted filesystem with %s data mode.\n",
- test_opt(sb,DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA ? "journal":
- test_opt(sb,DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA ? "ordered":
- "writeback");
+ if (needs_recovery) {
+ ext4_msg(sb, KERN_INFO, "recovery complete");
+ ext4_mark_recovery_complete(sb, es);
+ }
+ if (EXT4_SB(sb)->s_journal) {
+ if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
+ descr = " journalled data mode";
+ else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
+ descr = " ordered data mode";
+ else
+ descr = " writeback data mode";
+ } else
+ descr = "out journal";
- ext4_ext_init(sb);
- ext4_mb_init(sb, needs_recovery);
+ ext4_msg(sb, KERN_INFO, "mounted filesystem with%s", descr);
lock_kernel();
return 0;
cantfind_ext4:
if (!silent)
- printk(KERN_ERR "VFS: Can't find ext4 filesystem on dev %s.\n",
- sb->s_id);
+ ext4_msg(sb, KERN_ERR, "VFS: Can't find ext4 filesystem");
goto failed_mount;
failed_mount4:
- jbd2_journal_destroy(sbi->s_journal);
- sbi->s_journal = NULL;
+ ext4_msg(sb, KERN_ERR, "mount failed");
+ ext4_release_system_zone(sb);
+ if (sbi->s_journal) {
+ jbd2_journal_destroy(sbi->s_journal);
+ sbi->s_journal = NULL;
+ }
failed_mount3:
+ if (sbi->s_flex_groups) {
+ if (is_vmalloc_addr(sbi->s_flex_groups))
+ vfree(sbi->s_flex_groups);
+ else
+ kfree(sbi->s_flex_groups);
+ }
percpu_counter_destroy(&sbi->s_freeblocks_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
+ percpu_counter_destroy(&sbi->s_dirtyblocks_counter);
failed_mount2:
for (i = 0; i < db_count; i++)
brelse(sbi->s_group_desc[i]);
kfree(sbi->s_group_desc);
failed_mount:
+ if (sbi->s_proc) {
+ remove_proc_entry(sb->s_id, ext4_proc_root);
+ }
#ifdef CONFIG_QUOTA
for (i = 0; i < MAXQUOTAS; i++)
kfree(sbi->s_qf_names[i]);
brelse(bh);
out_fail:
sb->s_fs_info = NULL;
+ kfree(sbi->s_blockgroup_lock);
kfree(sbi);
lock_kernel();
return ret;
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- if (sbi->s_commit_interval)
- journal->j_commit_interval = sbi->s_commit_interval;
- /* We could also set up an ext4-specific default for the commit
- * interval here, but for now we'll just fall back to the jbd
- * default. */
+ journal->j_commit_interval = sbi->s_commit_interval;
+ journal->j_min_batch_time = sbi->s_min_batch_time;
+ journal->j_max_batch_time = sbi->s_max_batch_time;
spin_lock(&journal->j_state_lock);
if (test_opt(sb, BARRIER))
journal->j_flags |= JBD2_BARRIER;
else
journal->j_flags &= ~JBD2_BARRIER;
+ if (test_opt(sb, DATA_ERR_ABORT))
+ journal->j_flags |= JBD2_ABORT_ON_SYNCDATA_ERR;
+ else
+ journal->j_flags &= ~JBD2_ABORT_ON_SYNCDATA_ERR;
spin_unlock(&journal->j_state_lock);
}
struct inode *journal_inode;
journal_t *journal;
+ BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+
/* First, test for the existence of a valid inode on disk. Bad
* things happen if we iget() an unused inode, as the subsequent
* iput() will try to delete it. */
journal_inode = ext4_iget(sb, journal_inum);
if (IS_ERR(journal_inode)) {
- printk(KERN_ERR "EXT4-fs: no journal found.\n");
+ ext4_msg(sb, KERN_ERR, "no journal found");
return NULL;
}
if (!journal_inode->i_nlink) {
make_bad_inode(journal_inode);
iput(journal_inode);
- printk(KERN_ERR "EXT4-fs: journal inode is deleted.\n");
+ ext4_msg(sb, KERN_ERR, "journal inode is deleted");
return NULL;
}
- jbd_debug(2, "Journal inode found at %p: %Ld bytes\n",
+ jbd_debug(2, "Journal inode found at %p: %lld bytes\n",
journal_inode, journal_inode->i_size);
if (!S_ISREG(journal_inode->i_mode)) {
- printk(KERN_ERR "EXT4-fs: invalid journal inode.\n");
+ ext4_msg(sb, KERN_ERR, "invalid journal inode");
iput(journal_inode);
return NULL;
}
journal = jbd2_journal_init_inode(journal_inode);
if (!journal) {
- printk(KERN_ERR "EXT4-fs: Could not load journal inode\n");
+ ext4_msg(sb, KERN_ERR, "Could not load journal inode");
iput(journal_inode);
return NULL;
}
static journal_t *ext4_get_dev_journal(struct super_block *sb,
dev_t j_dev)
{
- struct buffer_head * bh;
+ struct buffer_head *bh;
journal_t *journal;
ext4_fsblk_t start;
ext4_fsblk_t len;
int hblock, blocksize;
ext4_fsblk_t sb_block;
unsigned long offset;
- struct ext4_super_block * es;
+ struct ext4_super_block *es;
struct block_device *bdev;
- bdev = ext4_blkdev_get(j_dev);
+ BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+
+ bdev = ext4_blkdev_get(j_dev, sb);
if (bdev == NULL)
return NULL;
if (bd_claim(bdev, sb)) {
- printk(KERN_ERR
- "EXT4: failed to claim external journal device.\n");
- blkdev_put(bdev);
+ ext4_msg(sb, KERN_ERR,
+ "failed to claim external journal device");
+ blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
return NULL;
}
blocksize = sb->s_blocksize;
- hblock = bdev_hardsect_size(bdev);
+ hblock = bdev_logical_block_size(bdev);
if (blocksize < hblock) {
- printk(KERN_ERR
- "EXT4-fs: blocksize too small for journal device.\n");
+ ext4_msg(sb, KERN_ERR,
+ "blocksize too small for journal device");
goto out_bdev;
}
offset = EXT4_MIN_BLOCK_SIZE % blocksize;
set_blocksize(bdev, blocksize);
if (!(bh = __bread(bdev, sb_block, blocksize))) {
- printk(KERN_ERR "EXT4-fs: couldn't read superblock of "
- "external journal\n");
+ ext4_msg(sb, KERN_ERR, "couldn't read superblock of "
+ "external journal");
goto out_bdev;
}
if ((le16_to_cpu(es->s_magic) != EXT4_SUPER_MAGIC) ||
!(le32_to_cpu(es->s_feature_incompat) &
EXT4_FEATURE_INCOMPAT_JOURNAL_DEV)) {
- printk(KERN_ERR "EXT4-fs: external journal has "
- "bad superblock\n");
+ ext4_msg(sb, KERN_ERR, "external journal has "
+ "bad superblock");
brelse(bh);
goto out_bdev;
}
if (memcmp(EXT4_SB(sb)->s_es->s_journal_uuid, es->s_uuid, 16)) {
- printk(KERN_ERR "EXT4-fs: journal UUID does not match\n");
+ ext4_msg(sb, KERN_ERR, "journal UUID does not match");
brelse(bh);
goto out_bdev;
}
journal = jbd2_journal_init_dev(bdev, sb->s_bdev,
start, len, blocksize);
if (!journal) {
- printk(KERN_ERR "EXT4-fs: failed to create device journal\n");
+ ext4_msg(sb, KERN_ERR, "failed to create device journal");
goto out_bdev;
}
journal->j_private = sb;
ll_rw_block(READ, 1, &journal->j_sb_buffer);
wait_on_buffer(journal->j_sb_buffer);
if (!buffer_uptodate(journal->j_sb_buffer)) {
- printk(KERN_ERR "EXT4-fs: I/O error on journal device\n");
+ ext4_msg(sb, KERN_ERR, "I/O error on journal device");
goto out_journal;
}
if (be32_to_cpu(journal->j_superblock->s_nr_users) != 1) {
- printk(KERN_ERR "EXT4-fs: External journal has more than one "
- "user (unsupported) - %d\n",
+ ext4_msg(sb, KERN_ERR, "External journal has more than one "
+ "user (unsupported) - %d",
be32_to_cpu(journal->j_superblock->s_nr_users));
goto out_journal;
}
EXT4_SB(sb)->journal_bdev = bdev;
ext4_init_journal_params(sb, journal);
return journal;
+
out_journal:
jbd2_journal_destroy(journal);
out_bdev:
int err = 0;
int really_read_only;
+ BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+
if (journal_devnum &&
journal_devnum != le32_to_cpu(es->s_journal_dev)) {
- printk(KERN_INFO "EXT4-fs: external journal device major/minor "
- "numbers have changed\n");
+ ext4_msg(sb, KERN_INFO, "external journal device major/minor "
+ "numbers have changed");
journal_dev = new_decode_dev(journal_devnum);
} else
journal_dev = new_decode_dev(le32_to_cpu(es->s_journal_dev));
* crash? For recovery, we need to check in advance whether we
* can get read-write access to the device.
*/
-
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
if (sb->s_flags & MS_RDONLY) {
- printk(KERN_INFO "EXT4-fs: INFO: recovery "
- "required on readonly filesystem.\n");
+ ext4_msg(sb, KERN_INFO, "INFO: recovery "
+ "required on readonly filesystem");
if (really_read_only) {
- printk(KERN_ERR "EXT4-fs: write access "
- "unavailable, cannot proceed.\n");
+ ext4_msg(sb, KERN_ERR, "write access "
+ "unavailable, cannot proceed");
return -EROFS;
}
- printk (KERN_INFO "EXT4-fs: write access will "
- "be enabled during recovery.\n");
+ ext4_msg(sb, KERN_INFO, "write access will "
+ "be enabled during recovery");
}
}
if (journal_inum && journal_dev) {
- printk(KERN_ERR "EXT4-fs: filesystem has both journal "
- "and inode journals!\n");
+ ext4_msg(sb, KERN_ERR, "filesystem has both journal "
+ "and inode journals!");
return -EINVAL;
}
return -EINVAL;
}
+ if (journal->j_flags & JBD2_BARRIER)
+ ext4_msg(sb, KERN_INFO, "barriers enabled");
+ else
+ ext4_msg(sb, KERN_INFO, "barriers disabled");
+
if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {
err = jbd2_journal_update_format(journal);
if (err) {
- printk(KERN_ERR "EXT4-fs: error updating journal.\n");
+ ext4_msg(sb, KERN_ERR, "error updating journal");
jbd2_journal_destroy(journal);
return err;
}
err = jbd2_journal_load(journal);
if (err) {
- printk(KERN_ERR "EXT4-fs: error loading journal.\n");
+ ext4_msg(sb, KERN_ERR, "error loading journal");
jbd2_journal_destroy(journal);
return err;
}
if (journal_devnum &&
journal_devnum != le32_to_cpu(es->s_journal_dev)) {
es->s_journal_dev = cpu_to_le32(journal_devnum);
- sb->s_dirt = 1;
/* Make sure we flush the recovery flag to disk. */
- ext4_commit_super(sb, es, 1);
- }
-
- return 0;
-}
-
-static int ext4_create_journal(struct super_block * sb,
- struct ext4_super_block * es,
- unsigned int journal_inum)
-{
- journal_t *journal;
- int err;
-
- if (sb->s_flags & MS_RDONLY) {
- printk(KERN_ERR "EXT4-fs: readonly filesystem when trying to "
- "create journal.\n");
- return -EROFS;
- }
-
- journal = ext4_get_journal(sb, journal_inum);
- if (!journal)
- return -EINVAL;
-
- printk(KERN_INFO "EXT4-fs: creating new journal on inode %u\n",
- journal_inum);
-
- err = jbd2_journal_create(journal);
- if (err) {
- printk(KERN_ERR "EXT4-fs: error creating journal.\n");
- jbd2_journal_destroy(journal);
- return -EIO;
+ ext4_commit_super(sb, 1);
}
- EXT4_SB(sb)->s_journal = journal;
-
- ext4_update_dynamic_rev(sb);
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
- EXT4_SET_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL);
-
- es->s_journal_inum = cpu_to_le32(journal_inum);
- sb->s_dirt = 1;
-
- /* Make sure we flush the recovery flag to disk. */
- ext4_commit_super(sb, es, 1);
-
return 0;
}
-static void ext4_commit_super (struct super_block * sb,
- struct ext4_super_block * es,
- int sync)
+static int ext4_commit_super(struct super_block *sb, int sync)
{
+ struct ext4_super_block *es = EXT4_SB(sb)->s_es;
struct buffer_head *sbh = EXT4_SB(sb)->s_sbh;
+ int error = 0;
if (!sbh)
- return;
+ return error;
+ if (buffer_write_io_error(sbh)) {
+ /*
+ * Oh, dear. A previous attempt to write the
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ ext4_msg(sb, KERN_ERR, "previous I/O error to "
+ "superblock detected");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
es->s_wtime = cpu_to_le32(get_seconds());
- ext4_free_blocks_count_set(es, ext4_count_free_blocks(sb));
- es->s_free_inodes_count = cpu_to_le32(ext4_count_free_inodes(sb));
+ es->s_kbytes_written =
+ cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
+ ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+ EXT4_SB(sb)->s_sectors_written_start) >> 1));
+ ext4_free_blocks_count_set(es, percpu_counter_sum_positive(
+ &EXT4_SB(sb)->s_freeblocks_counter));
+ es->s_free_inodes_count = cpu_to_le32(percpu_counter_sum_positive(
+ &EXT4_SB(sb)->s_freeinodes_counter));
+ sb->s_dirt = 0;
BUFFER_TRACE(sbh, "marking dirty");
mark_buffer_dirty(sbh);
- if (sync)
- sync_dirty_buffer(sbh);
+ if (sync) {
+ error = sync_dirty_buffer(sbh);
+ if (error)
+ return error;
+
+ error = buffer_write_io_error(sbh);
+ if (error) {
+ ext4_msg(sb, KERN_ERR, "I/O error while writing "
+ "superblock");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+ }
+ return error;
}
-
/*
* Have we just finished recovery? If so, and if we are mounting (or
* remounting) the filesystem readonly, then we will end up with a
* consistent fs on disk. Record that fact.
*/
-static void ext4_mark_recovery_complete(struct super_block * sb,
- struct ext4_super_block * es)
+static void ext4_mark_recovery_complete(struct super_block *sb,
+ struct ext4_super_block *es)
{
journal_t *journal = EXT4_SB(sb)->s_journal;
+ if (!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) {
+ BUG_ON(journal != NULL);
+ return;
+ }
jbd2_journal_lock_updates(journal);
- jbd2_journal_flush(journal);
- lock_super(sb);
+ if (jbd2_journal_flush(journal) < 0)
+ goto out;
+
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER) &&
sb->s_flags & MS_RDONLY) {
EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
- sb->s_dirt = 0;
- ext4_commit_super(sb, es, 1);
+ ext4_commit_super(sb, 1);
}
- unlock_super(sb);
+
+out:
jbd2_journal_unlock_updates(journal);
}
* has recorded an error from a previous lifetime, move that error to the
* main filesystem now.
*/
-static void ext4_clear_journal_err(struct super_block * sb,
- struct ext4_super_block * es)
+static void ext4_clear_journal_err(struct super_block *sb,
+ struct ext4_super_block *es)
{
journal_t *journal;
int j_errno;
const char *errstr;
+ BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
+
journal = EXT4_SB(sb)->s_journal;
/*
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
- ext4_commit_super (sb, es, 1);
+ ext4_commit_super(sb, 1);
jbd2_journal_clear_err(journal);
}
int ext4_force_commit(struct super_block *sb)
{
journal_t *journal;
- int ret;
+ int ret = 0;
if (sb->s_flags & MS_RDONLY)
return 0;
journal = EXT4_SB(sb)->s_journal;
- sb->s_dirt = 0;
- ret = ext4_journal_force_commit(journal);
+ if (journal)
+ ret = ext4_journal_force_commit(journal);
+
return ret;
}
-/*
- * Ext4 always journals updates to the superblock itself, so we don't
- * have to propagate any other updates to the superblock on disk at this
- * point. Just start an async writeback to get the buffers on their way
- * to the disk.
- *
- * This implicitly triggers the writebehind on sync().
- */
-
-static void ext4_write_super (struct super_block * sb)
+static void ext4_write_super(struct super_block *sb)
{
- if (mutex_trylock(&sb->s_lock) != 0)
- BUG();
- sb->s_dirt = 0;
+ ext4_commit_super(sb, 1);
}
static int ext4_sync_fs(struct super_block *sb, int wait)
{
+ int ret = 0;
tid_t target;
- sb->s_dirt = 0;
+ trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
if (wait)
jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, target);
}
- return 0;
+ return ret;
}
/*
* LVM calls this function before a (read-only) snapshot is created. This
* gives us a chance to flush the journal completely and mark the fs clean.
*/
-static void ext4_write_super_lockfs(struct super_block *sb)
+static int ext4_freeze(struct super_block *sb)
{
- sb->s_dirt = 0;
+ int error = 0;
+ journal_t *journal;
- if (!(sb->s_flags & MS_RDONLY)) {
- journal_t *journal = EXT4_SB(sb)->s_journal;
+ if (sb->s_flags & MS_RDONLY)
+ return 0;
- /* Now we set up the journal barrier. */
- jbd2_journal_lock_updates(journal);
- jbd2_journal_flush(journal);
+ journal = EXT4_SB(sb)->s_journal;
- /* Journal blocked and flushed, clear needs_recovery flag. */
- EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
- ext4_commit_super(sb, EXT4_SB(sb)->s_es, 1);
+ /* Now we set up the journal barrier. */
+ jbd2_journal_lock_updates(journal);
+
+ /*
+ * Don't clear the needs_recovery flag if we failed to flush
+ * the journal.
+ */
+ error = jbd2_journal_flush(journal);
+ if (error < 0) {
+ out:
+ jbd2_journal_unlock_updates(journal);
+ return error;
}
+
+ /* Journal blocked and flushed, clear needs_recovery flag. */
+ EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ error = ext4_commit_super(sb, 1);
+ if (error)
+ goto out;
+ return 0;
}
/*
* Called by LVM after the snapshot is done. We need to reset the RECOVER
* flag here, even though the filesystem is not technically dirty yet.
*/
-static void ext4_unlockfs(struct super_block *sb)
+static int ext4_unfreeze(struct super_block *sb)
{
- if (!(sb->s_flags & MS_RDONLY)) {
- lock_super(sb);
- /* Reser the needs_recovery flag before the fs is unlocked. */
- EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
- ext4_commit_super(sb, EXT4_SB(sb)->s_es, 1);
- unlock_super(sb);
- jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
- }
+ if (sb->s_flags & MS_RDONLY)
+ return 0;
+
+ lock_super(sb);
+ /* Reset the needs_recovery flag before the fs is unlocked. */
+ EXT4_SET_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
+ ext4_commit_super(sb, 1);
+ unlock_super(sb);
+ jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
+ return 0;
}
-static int ext4_remount (struct super_block * sb, int * flags, char * data)
+static int ext4_remount(struct super_block *sb, int *flags, char *data)
{
- struct ext4_super_block * es;
+ struct ext4_super_block *es;
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_fsblk_t n_blocks_count = 0;
unsigned long old_sb_flags;
struct ext4_mount_options old_opts;
+ ext4_group_t g;
+ unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO;
int err;
#ifdef CONFIG_QUOTA
int i;
old_opts.s_resuid = sbi->s_resuid;
old_opts.s_resgid = sbi->s_resgid;
old_opts.s_commit_interval = sbi->s_commit_interval;
+ old_opts.s_min_batch_time = sbi->s_min_batch_time;
+ old_opts.s_max_batch_time = sbi->s_max_batch_time;
#ifdef CONFIG_QUOTA
old_opts.s_jquota_fmt = sbi->s_jquota_fmt;
for (i = 0; i < MAXQUOTAS; i++)
old_opts.s_qf_names[i] = sbi->s_qf_names[i];
#endif
+ if (sbi->s_journal && sbi->s_journal->j_task->io_context)
+ journal_ioprio = sbi->s_journal->j_task->io_context->ioprio;
/*
* Allow the "check" option to be passed as a remount option.
*/
- if (!parse_options(data, sb, NULL, NULL, &n_blocks_count, 1)) {
+ if (!parse_options(data, sb, NULL, &journal_ioprio,
+ &n_blocks_count, 1)) {
err = -EINVAL;
goto restore_opts;
}
es = sbi->s_es;
- ext4_init_journal_params(sb, sbi->s_journal);
+ if (sbi->s_journal) {
+ ext4_init_journal_params(sb, sbi->s_journal);
+ set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
+ }
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) ||
n_blocks_count > ext4_blocks_count(es)) {
(sbi->s_mount_state & EXT4_VALID_FS))
es->s_state = cpu_to_le16(sbi->s_mount_state);
- /*
- * We have to unlock super so that we can wait for
- * transactions.
- */
- unlock_super(sb);
- ext4_mark_recovery_complete(sb, es);
- lock_super(sb);
+ if (sbi->s_journal)
+ ext4_mark_recovery_complete(sb, es);
} else {
- __le32 ret;
+ int ret;
if ((ret = EXT4_HAS_RO_COMPAT_FEATURE(sb,
~EXT4_FEATURE_RO_COMPAT_SUPP))) {
- printk(KERN_WARNING "EXT4-fs: %s: couldn't "
+ ext4_msg(sb, KERN_WARNING, "couldn't "
"remount RDWR because of unsupported "
- "optional features (%x).\n",
- sb->s_id, le32_to_cpu(ret));
+ "optional features (%x)",
+ (le32_to_cpu(sbi->s_es->s_feature_ro_compat) &
+ ~EXT4_FEATURE_RO_COMPAT_SUPP));
err = -EROFS;
goto restore_opts;
}
/*
+ * Make sure the group descriptor checksums
+ * are sane. If they aren't, refuse to remount r/w.
+ */
+ for (g = 0; g < sbi->s_groups_count; g++) {
+ struct ext4_group_desc *gdp =
+ ext4_get_group_desc(sb, g, NULL);
+
+ if (!ext4_group_desc_csum_verify(sbi, g, gdp)) {
+ ext4_msg(sb, KERN_ERR,
+ "ext4_remount: Checksum for group %u failed (%u!=%u)",
+ g, le16_to_cpu(ext4_group_desc_csum(sbi, g, gdp)),
+ le16_to_cpu(gdp->bg_checksum));
+ err = -EINVAL;
+ goto restore_opts;
+ }
+ }
+
+ /*
* If we have an unprocessed orphan list hanging
* around from a previously readonly bdev mount,
* require a full umount/remount for now.
*/
if (es->s_last_orphan) {
- printk(KERN_WARNING "EXT4-fs: %s: couldn't "
+ ext4_msg(sb, KERN_WARNING, "Couldn't "
"remount RDWR because of unprocessed "
"orphan inode list. Please "
- "umount/remount instead.\n",
- sb->s_id);
+ "umount/remount instead");
err = -EINVAL;
goto restore_opts;
}
* been changed by e2fsck since we originally mounted
* the partition.)
*/
- ext4_clear_journal_err(sb, es);
+ if (sbi->s_journal)
+ ext4_clear_journal_err(sb, es);
sbi->s_mount_state = le16_to_cpu(es->s_state);
if ((err = ext4_group_extend(sb, es, n_blocks_count)))
goto restore_opts;
- if (!ext4_setup_super (sb, es, 0))
+ if (!ext4_setup_super(sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
}
}
+ ext4_setup_system_zone(sb);
+ if (sbi->s_journal == NULL)
+ ext4_commit_super(sb, 1);
+
#ifdef CONFIG_QUOTA
/* Release old quota file names */
for (i = 0; i < MAXQUOTAS; i++)
kfree(old_opts.s_qf_names[i]);
#endif
return 0;
+
restore_opts:
sb->s_flags = old_sb_flags;
sbi->s_mount_opt = old_opts.s_mount_opt;
sbi->s_resuid = old_opts.s_resuid;
sbi->s_resgid = old_opts.s_resgid;
sbi->s_commit_interval = old_opts.s_commit_interval;
+ sbi->s_min_batch_time = old_opts.s_min_batch_time;
+ sbi->s_max_batch_time = old_opts.s_max_batch_time;
#ifdef CONFIG_QUOTA
sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
for (i = 0; i < MAXQUOTAS; i++) {
return err;
}
-static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf)
+static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
if (test_opt(sb, MINIX_DF)) {
sbi->s_overhead_last = 0;
} else if (sbi->s_blocks_last != ext4_blocks_count(es)) {
- ext4_group_t ngroups = sbi->s_groups_count, i;
+ ext4_group_t i, ngroups = ext4_get_groups_count(sb);
ext4_fsblk_t overhead = 0;
- smp_rmb();
/*
* Compute the overhead (FS structures). This is constant
buf->f_type = EXT4_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last;
- buf->f_bfree = percpu_counter_sum_positive(&sbi->s_freeblocks_counter);
+ buf->f_bfree = percpu_counter_sum_positive(&sbi->s_freeblocks_counter) -
+ percpu_counter_sum_positive(&sbi->s_dirtyblocks_counter);
ext4_free_blocks_count_set(es, buf->f_bfree);
buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es);
if (buf->f_bfree < ext4_r_blocks_count(es))
le64_to_cpup((void *)es->s_uuid + sizeof(u64));
buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL;
buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL;
+
return 0;
}
-/* Helper function for writing quotas on sync - we need to start transaction before quota file
- * is locked for write. Otherwise the are possible deadlocks:
+/* Helper function for writing quotas on sync - we need to start transaction
+ * before quota file is locked for write. Otherwise the are possible deadlocks:
* Process 1 Process 2
* ext4_create() quota_sync()
- * jbd2_journal_start() write_dquot()
- * DQUOT_INIT() down(dqio_mutex)
+ * jbd2_journal_start() write_dquot()
+ * vfs_dq_init() down(dqio_mutex)
* down(dqio_mutex) jbd2_journal_start()
*
*/
return sb_dqopt(dquot->dq_sb)->files[dquot->dq_type];
}
-static int ext4_dquot_initialize(struct inode *inode, int type)
-{
- handle_t *handle;
- int ret, err;
-
- /* We may create quota structure so we need to reserve enough blocks */
- handle = ext4_journal_start(inode, 2*EXT4_QUOTA_INIT_BLOCKS(inode->i_sb));
- if (IS_ERR(handle))
- return PTR_ERR(handle);
- ret = dquot_initialize(inode, type);
- err = ext4_journal_stop(handle);
- if (!ret)
- ret = err;
- return ret;
-}
-
-static int ext4_dquot_drop(struct inode *inode)
-{
- handle_t *handle;
- int ret, err;
-
- /* We may delete quota structure so we need to reserve enough blocks */
- handle = ext4_journal_start(inode, 2*EXT4_QUOTA_DEL_BLOCKS(inode->i_sb));
- if (IS_ERR(handle)) {
- /*
- * We call dquot_drop() anyway to at least release references
- * to quota structures so that umount does not hang.
- */
- dquot_drop(inode);
- return PTR_ERR(handle);
- }
- ret = dquot_drop(inode);
- err = ext4_journal_stop(handle);
- if (!ret)
- ret = err;
- return ret;
-}
-
static int ext4_write_dquot(struct dquot *dquot)
{
int ret, err;
inode = dquot_to_inode(dquot);
handle = ext4_journal_start(inode,
- EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
+ EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_commit(dquot);
handle_t *handle;
handle = ext4_journal_start(dquot_to_inode(dquot),
- EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb));
+ EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_acquire(dquot);
handle_t *handle;
handle = ext4_journal_start(dquot_to_inode(dquot),
- EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb));
+ EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle)) {
/* Release dquot anyway to avoid endless cycle in dqput() */
dquot_release(dquot);
static int ext4_quota_on_mount(struct super_block *sb, int type)
{
return vfs_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
- EXT4_SB(sb)->s_jquota_fmt, type);
+ EXT4_SB(sb)->s_jquota_fmt, type);
}
/*
* Standard function to be called on quota_on
*/
static int ext4_quota_on(struct super_block *sb, int type, int format_id,
- char *path, int remount)
+ char *name, int remount)
{
int err;
- struct nameidata nd;
+ struct path path;
if (!test_opt(sb, QUOTA))
return -EINVAL;
- /* When remounting, no checks are needed and in fact, path is NULL */
+ /* When remounting, no checks are needed and in fact, name is NULL */
if (remount)
- return vfs_quota_on(sb, type, format_id, path, remount);
+ return vfs_quota_on(sb, type, format_id, name, remount);
- err = path_lookup(path, LOOKUP_FOLLOW, &nd);
+ err = kern_path(name, LOOKUP_FOLLOW, &path);
if (err)
return err;
/* Quotafile not on the same filesystem? */
- if (nd.path.mnt->mnt_sb != sb) {
- path_put(&nd.path);
+ if (path.mnt->mnt_sb != sb) {
+ path_put(&path);
return -EXDEV;
}
/* Journaling quota? */
if (EXT4_SB(sb)->s_qf_names[type]) {
- /* Quotafile not of fs root? */
- if (nd.path.dentry->d_parent->d_inode != sb->s_root->d_inode)
- printk(KERN_WARNING
- "EXT4-fs: Quota file not on filesystem root. "
- "Journaled quota will not work.\n");
- }
+ /* Quotafile not in fs root? */
+ if (path.dentry->d_parent != sb->s_root)
+ ext4_msg(sb, KERN_WARNING,
+ "Quota file not on filesystem root. "
+ "Journaled quota will not work");
+ }
/*
* When we journal data on quota file, we have to flush journal to see
* all updates to the file when we bypass pagecache...
*/
- if (ext4_should_journal_data(nd.path.dentry->d_inode)) {
+ if (EXT4_SB(sb)->s_journal &&
+ ext4_should_journal_data(path.dentry->d_inode)) {
/*
* We don't need to lock updates but journal_flush() could
* otherwise be livelocked...
*/
jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
- jbd2_journal_flush(EXT4_SB(sb)->s_journal);
+ err = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
+ if (err) {
+ path_put(&path);
+ return err;
+ }
}
- path_put(&nd.path);
- return vfs_quota_on(sb, type, format_id, path, remount);
+ err = vfs_quota_on_path(sb, type, format_id, &path);
+ path_put(&path);
+ return err;
}
/* Read data from quotafile - avoid pagecache and such because we cannot afford
struct buffer_head *bh;
handle_t *handle = journal_current_handle();
- if (!handle) {
- printk(KERN_WARNING "EXT4-fs: Quota write (off=%Lu, len=%Lu)"
- " cancelled because transaction is not started.\n",
+ if (EXT4_SB(sb)->s_journal && !handle) {
+ ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)"
+ " cancelled because transaction is not started",
(unsigned long long)off, (unsigned long long)len);
return -EIO;
}
flush_dcache_page(bh->b_page);
unlock_buffer(bh);
if (journal_quota)
- err = ext4_journal_dirty_metadata(handle, bh);
+ err = ext4_handle_dirty_metadata(handle, NULL, bh);
else {
/* Always do at least ordered writes for quotas */
err = ext4_jbd2_file_inode(handle, inode);
#endif
-static int ext4_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static int ext4_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt);
+ return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt);
+}
+
+static struct file_system_type ext4_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "ext4",
+ .get_sb = ext4_get_sb,
+ .kill_sb = kill_block_super,
+ .fs_flags = FS_REQUIRES_DEV,
+};
+
+#ifdef CONFIG_EXT4DEV_COMPAT
+static int ext4dev_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data,struct vfsmount *mnt)
+{
+ printk(KERN_WARNING "EXT4-fs (%s): Update your userspace programs "
+ "to mount using ext4\n", dev_name);
+ printk(KERN_WARNING "EXT4-fs (%s): ext4dev backwards compatibility "
+ "will go away by 2.6.31\n", dev_name);
+ return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt);
}
static struct file_system_type ext4dev_fs_type = {
.owner = THIS_MODULE,
.name = "ext4dev",
- .get_sb = ext4_get_sb,
+ .get_sb = ext4dev_get_sb,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS("ext4dev");
+#endif
static int __init init_ext4_fs(void)
{
int err;
- err = init_ext4_mballoc();
+ err = init_ext4_system_zone();
if (err)
return err;
+ ext4_kset = kset_create_and_add("ext4", NULL, fs_kobj);
+ if (!ext4_kset)
+ goto out4;
+ ext4_proc_root = proc_mkdir("fs/ext4", NULL);
+ err = init_ext4_mballoc();
+ if (err)
+ goto out3;
err = init_ext4_xattr();
if (err)
err = init_inodecache();
if (err)
goto out1;
- err = register_filesystem(&ext4dev_fs_type);
+ err = register_filesystem(&ext4_fs_type);
if (err)
goto out;
+#ifdef CONFIG_EXT4DEV_COMPAT
+ err = register_filesystem(&ext4dev_fs_type);
+ if (err) {
+ unregister_filesystem(&ext4_fs_type);
+ goto out;
+ }
+#endif
return 0;
out:
destroy_inodecache();
exit_ext4_xattr();
out2:
exit_ext4_mballoc();
+out3:
+ remove_proc_entry("fs/ext4", NULL);
+ kset_unregister(ext4_kset);
+out4:
+ exit_ext4_system_zone();
return err;
}
static void __exit exit_ext4_fs(void)
{
+ unregister_filesystem(&ext4_fs_type);
+#ifdef CONFIG_EXT4DEV_COMPAT
unregister_filesystem(&ext4dev_fs_type);
+#endif
destroy_inodecache();
exit_ext4_xattr();
exit_ext4_mballoc();
+ remove_proc_entry("fs/ext4", NULL);
+ kset_unregister(ext4_kset);
+ exit_ext4_system_zone();
}
MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
-MODULE_DESCRIPTION("Fourth Extended Filesystem with extents");
+MODULE_DESCRIPTION("Fourth Extended Filesystem");
MODULE_LICENSE("GPL");
module_init(init_ext4_fs)
module_exit(exit_ext4_fs)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff