#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 "mballoc.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");
+#define CREATE_TRACE_POINTS
+#include <trace/events/ext4.h>
struct proc_dir_entry *ext4_proc_root;
static struct kset *ext4_kset;
{
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,
{
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)le16_to_cpu(bg->bg_free_blocks_count_hi) << 16 : 0);
}
__u32 ext4_free_inodes_count(struct super_block *sb,
{
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)le16_to_cpu(bg->bg_free_inodes_count_hi) << 16 : 0);
}
__u32 ext4_used_dirs_count(struct super_block *sb,
{
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)le16_to_cpu(bg->bg_used_dirs_count_hi) << 16 : 0);
}
__u32 ext4_itable_unused_count(struct super_block *sb,
{
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);
+ (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0);
}
void ext4_block_bitmap_set(struct super_block *sb,
bg->bg_itable_unused_hi = cpu_to_le16(count >> 16);
}
+
+/* Just increment the non-pointer handle value */
+static handle_t *ext4_get_nojournal(void)
+{
+ handle_t *handle = current->journal_info;
+ unsigned long ref_cnt = (unsigned long)handle;
+
+ BUG_ON(ref_cnt >= EXT4_NOJOURNAL_MAX_REF_COUNT);
+
+ ref_cnt++;
+ handle = (handle_t *)ref_cnt;
+
+ current->journal_info = handle;
+ return handle;
+}
+
+
+/* Decrement the non-pointer handle value */
+static void ext4_put_nojournal(handle_t *handle)
+{
+ unsigned long ref_cnt = (unsigned long)handle;
+
+ BUG_ON(ref_cnt == 0);
+
+ ref_cnt--;
+ handle = (handle_t *)ref_cnt;
+
+ current->journal_info = handle;
+}
+
/*
* Wrappers for jbd2_journal_start/end.
*
journal = EXT4_SB(sb)->s_journal;
if (journal) {
if (is_journal_aborted(journal)) {
- ext4_abort(sb, __func__,
- "Detected aborted journal");
+ ext4_abort(sb, __func__, "Detected aborted journal");
return ERR_PTR(-EROFS);
}
return jbd2_journal_start(journal, nblocks);
}
- /*
- * We're not journaling, return the appropriate indication.
- */
- current->journal_info = EXT4_NOJOURNAL_HANDLE;
- return current->journal_info;
+ return ext4_get_nojournal();
}
/*
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;
+ ext4_put_nojournal(handle);
return 0;
}
sb = handle->h_transaction->t_journal->j_private;
if (!test_opt(sb, ERRORS_CONT)) {
journal_t *journal = EXT4_SB(sb)->s_journal;
- EXT4_SB(sb)->s_mount_opt |= EXT4_MOUNT_ABORT;
+ EXT4_SB(sb)->s_mount_flags |= EXT4_MF_FS_ABORTED;
if (journal)
jbd2_journal_abort(journal, -EIO);
}
if (test_opt(sb, ERRORS_RO)) {
- printk(KERN_CRIT "Remounting filesystem read-only\n");
+ ext4_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
sb->s_flags |= MS_RDONLY;
}
ext4_commit_super(sb, 1);
errstr = "Out of memory";
break;
case -EROFS:
- if (!sb || EXT4_SB(sb)->s_journal->j_flags & JBD2_ABORT)
+ if (!sb || (EXT4_SB(sb)->s_journal &&
+ EXT4_SB(sb)->s_journal->j_flags & JBD2_ABORT))
errstr = "Journal has aborted";
else
errstr = "Readonly filesystem";
{
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);
vprintk(fmt, 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;
+ EXT4_SB(sb)->s_mount_flags |= EXT4_MF_FS_ABORTED;
if (EXT4_SB(sb)->s_journal)
jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
}
+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, ...)
{
}
void ext4_grp_locked_error(struct super_block *sb, ext4_group_t grp,
- const char *function, const char *fmt, ...)
+ const char *function, const char *fmt, ...)
__releases(bitlock)
__acquires(bitlock)
{
return;
}
-
void ext4_update_dynamic_rev(struct super_block *sb)
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
/*
* 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-fs: 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;
}
{
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) {
struct ext4_super_block *es = sbi->s_es;
int i, err;
- ext4_mb_release(sb);
- ext4_ext_release(sb);
- ext4_xattr_put_super(sb);
+ flush_workqueue(sbi->dio_unwritten_wq);
+ destroy_workqueue(sbi->dio_unwritten_wq);
+
+ lock_super(sb);
+ lock_kernel();
+ if (sb->s_dirt)
+ ext4_commit_super(sb, 1);
+
if (sbi->s_journal) {
err = jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
ext4_abort(sb, __func__,
"Couldn't clean up the journal");
}
+
+ ext4_release_system_zone(sb);
+ ext4_mb_release(sb);
+ ext4_ext_release(sb);
+ ext4_xattr_put_super(sb);
+
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);
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_EXT4_FS_POSIX_ACL
- ei->i_acl = EXT4_ACL_NOT_CACHED;
- ei->i_default_acl = EXT4_ACL_NOT_CACHED;
-#endif
+
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));
ei->i_allocated_meta_blocks = 0;
ei->i_delalloc_reserved_flag = 0;
spin_lock_init(&(ei->i_block_reservation_lock));
+ INIT_LIST_HEAD(&ei->i_aio_dio_complete_list);
+ ei->cur_aio_dio = NULL;
+ ei->i_sync_tid = 0;
+ ei->i_datasync_tid = 0;
+
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);
static void ext4_clear_inode(struct inode *inode)
{
-#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_acl = EXT4_ACL_NOT_CACHED;
- }
- if (EXT4_I(inode)->i_default_acl &&
- EXT4_I(inode)->i_default_acl != EXT4_ACL_NOT_CACHED) {
- posix_acl_release(EXT4_I(inode)->i_default_acl);
- EXT4_I(inode)->i_default_acl = EXT4_ACL_NOT_CACHED;
- }
-#endif
ext4_discard_preallocations(inode);
if (EXT4_JOURNAL(inode))
jbd2_journal_release_jbd_inode(EXT4_SB(inode->i_sb)->s_journal,
#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");
+ if (sbi->s_jquota_fmt) {
+ char *fmtname = "";
+
+ switch (sbi->s_jquota_fmt) {
+ case QFMT_VFS_OLD:
+ fmtname = "vfsold";
+ break;
+ case QFMT_VFS_V0:
+ fmtname = "vfsv0";
+ break;
+ case QFMT_VFS_V1:
+ fmtname = "vfsv1";
+ break;
+ }
+ seq_printf(seq, ",jqfmt=%s", fmtname);
+ }
if (sbi->s_qf_names[USRQUOTA])
seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
if (test_opt(sb, NO_AUTO_DA_ALLOC))
seq_puts(seq, ",noauto_da_alloc");
+ if (test_opt(sb, DISCARD))
+ seq_puts(seq, ",discard");
+
+ if (test_opt(sb, NOLOAD))
+ seq_puts(seq, ",norecovery");
+
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);
* 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)
+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;
static ssize_t ext4_quota_write(struct super_block *sb, int type,
const char *data, size_t len, loff_t off);
-static struct dquot_operations ext4_quota_operations = {
+static const struct dquot_operations ext4_quota_operations = {
.initialize = dquot_initialize,
.drop = dquot_drop,
.alloc_space = dquot_alloc_space,
.destroy_dquot = dquot_destroy,
};
-static struct quotactl_ops ext4_qctl_operations = {
+static const struct quotactl_ops ext4_qctl_operations = {
.quota_on = ext4_quota_on,
.quota_off = vfs_quota_off,
.quota_sync = vfs_quota_sync,
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_data_err_abort, Opt_data_err_ignore,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
- Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
- Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, Opt_resize,
- Opt_usrquota, Opt_grpquota, Opt_i_version,
+ Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
+ Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
+ Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
Opt_stripe, Opt_delalloc, Opt_nodelalloc,
- Opt_inode_readahead_blks, Opt_journal_ioprio
+ Opt_block_validity, Opt_noblock_validity,
+ Opt_inode_readahead_blks, Opt_journal_ioprio,
+ Opt_discard, Opt_nodiscard,
};
static const match_table_t tokens = {
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
{Opt_noload, "noload"},
+ {Opt_noload, "norecovery"},
{Opt_nobh, "nobh"},
{Opt_bh, "bh"},
{Opt_commit, "commit=%u"},
{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_grpjquota, "grpjquota=%s"},
{Opt_jqfmt_vfsold, "jqfmt=vfsold"},
{Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
+ {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
{Opt_grpquota, "grpquota"},
{Opt_noquota, "noquota"},
{Opt_quota, "quota"},
{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_discard, "discard"},
+ {Opt_nodiscard, "nodiscard"},
{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(KERN_ERR "EXT4-fs: Invalid sb specification: %s\n",
if (*options == ',')
options++;
*data = (void *) options;
+
return sb_block;
}
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
- printk(KERN_ERR "EXT4 (no)user_xattr options "
- "not supported\n");
+ ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported");
break;
#endif
#ifdef CONFIG_EXT4_FS_POSIX_ACL
#else
case Opt_acl:
case Opt_noacl:
- printk(KERN_ERR "EXT4 (no)acl options "
- "not supported\n");
+ ext4_msg(sb, KERN_ERR, "(no)acl options not supported");
break;
#endif
case Opt_journal_update:
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");
+ ext4_msg(sb, KERN_ERR,
+ "Cannot specify journal on remount");
return 0;
}
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))
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 {
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;
set_qf_name:
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;
clear_qf_name:
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;
}
/*
goto set_qf_format;
case Opt_jqfmt_vfsv0:
qfmt = QFMT_VFS_V0;
+ goto set_qf_format;
+ case Opt_jqfmt_vfsv1:
+ qfmt = QFMT_VFS_V1;
set_qf_format:
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;
break;
case Opt_noquota:
if (sb_any_quota_loaded(sb)) {
- printk(KERN_ERR "EXT4-fs: Cannot change quota "
- "options when quota turned on.\n");
+ 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");
+ case Opt_jqfmt_vfsv1:
+ ext4_msg(sb, KERN_ERR,
+ "journaled quota options not supported");
break;
case Opt_noquota:
break;
#endif
case Opt_abort:
- set_opt(sbi->s_mount_opt, ABORT);
+ sbi->s_mount_flags |= EXT4_MF_FS_ABORTED;
break;
case Opt_nobarrier:
clear_opt(sbi->s_mount_opt, BARRIER);
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_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)) {
- printk(KERN_ERR "EXT4-fs: inode_readahead_blks"
- " must be a power of 2\n");
+ ext4_msg(sb, KERN_ERR,
+ "EXT4-fs: inode_readahead_blks"
+ " must be a power of 2");
return 0;
}
sbi->s_inode_readahead_blks = option;
else
set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC);
break;
+ case Opt_discard:
+ set_opt(sbi->s_mount_opt, DISCARD);
+ break;
+ case Opt_nodiscard:
+ clear_opt(sbi->s_mount_opt, DISCARD);
+ 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 (!sbi->s_journal)
+ 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);
ext4_commit_super(sb, 1);
if (test_opt(sb, DEBUG))
printk(KERN_INFO "[EXT4 FS bs=%lu, gc=%u, "
- "bpg=%lu, ipg=%lu, mo=%04lx]\n",
+ "bpg=%lu, ipg=%lu, mo=%04x]\n",
sb->s_blocksize,
sbi->s_groups_count,
EXT4_BLOCKS_PER_GROUP(sb),
EXT4_INODES_PER_GROUP(sb),
sbi->s_mount_opt);
- if (EXT4_SB(sb)->s_journal) {
- printk(KERN_INFO "EXT4 FS on %s, %s journal on %s\n",
- sb->s_id, EXT4_SB(sb)->s_journal->j_inode ? "internal" :
- "external", EXT4_SB(sb)->s_journal->j_devname);
- } else {
- printk(KERN_INFO "EXT4 FS on %s, no journal\n", sb->s_id);
- }
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;
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;
+
+ if (groups_per_flex < 2) {
sbi->s_log_groups_per_flex = 0;
return 1;
}
- sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
- groups_per_flex = 1 << sbi->s_log_groups_per_flex;
-
/* 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) <<
memset(sbi->s_flex_groups, 0, size);
}
if (sbi->s_flex_groups == NULL) {
- printk(KERN_ERR "EXT4-fs: not enough memory for "
- "%u flex groups\n", flex_group_count);
+ ext4_msg(sb, KERN_ERR, "not enough memory for "
+ "%u flex groups", flex_group_count);
goto failed;
}
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);
- 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));
+ atomic_add(ext4_free_inodes_count(sb, gdp),
+ &sbi->s_flex_groups[flex_group].free_inodes);
+ atomic_add(ext4_free_blks_count(sb, gdp),
+ &sbi->s_flex_groups[flex_group].free_blocks);
+ atomic_add(ext4_used_dirs_count(sb, gdp),
+ &sbi->s_flex_groups[flex_group].used_dirs);
}
return 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: "
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Block bitmap for group %u not in group "
- "(block %llu)!\n", i, block_bitmap);
+ "(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: "
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode bitmap for group %u not in group "
- "(block %llu)!\n", i, inode_bitmap);
+ "(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: "
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode table for group %u not in group "
- "(block %llu)!\n", i, inode_table);
+ "(block %llu)!", i, inode_table);
return 0;
}
- spin_lock(sb_bgl_lock(sbi, i));
+ 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 %u failed (%u!=%u)\n",
- i, le16_to_cpu(ext4_group_desc_csum(sbi, i,
- gdp)), le16_to_cpu(gdp->bg_checksum));
+ 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)) {
- spin_unlock(sb_bgl_lock(sbi, i));
+ ext4_unlock_group(sb, i);
return 0;
}
}
- spin_unlock(sb_bgl_lock(sbi, i));
+ 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;
}
}
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);
vfs_dq_init(inode);
if (inode->i_nlink) {
- printk(KERN_DEBUG
- "%s: truncating inode %lu to %lld 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 %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);
#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
/* small i_blocks in vfs inode? */
if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
/*
- * CONFIG_LBD is not enabled implies the inode
+ * CONFIG_LBDAF is not enabled implies the inode
* i_block represent total blocks in 512 bytes
* 32 == size of vfs inode i_blocks * 8
*/
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 (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
/*
- * !has_huge_files or CONFIG_LBD 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_LBDAF 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));
}
{
char *endp;
- while (*buf && isspace(*buf))
- buf++;
- *value = simple_strtoul(buf, &endp, 0);
- while (*endp && isspace(*endp))
- endp++;
+ *value = simple_strtoul(skip_spaces(buf), &endp, 0);
+ endp = skip_spaces(endp);
if (*endp || *value > max)
return -EINVAL;
}
static ssize_t sbi_ui_show(struct ext4_attr *a,
- struct ext4_sb_info *sbi, char *buf)
+ struct ext4_sb_info *sbi, char *buf)
{
unsigned int *ui = (unsigned int *) (((char *) sbi) + a->offset);
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(inode_goal, s_inode_goal);
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);
+EXT4_RW_ATTR_SBI_UI(max_writeback_mb_bump, s_max_writeback_mb_bump);
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(inode_goal),
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),
+ ATTR_LIST(max_writeback_mb_bump),
NULL,
};
.release = ext4_sb_release,
};
+/*
+ * Check whether this filesystem can be mounted based on
+ * the features present and the RDONLY/RDWR mount requested.
+ * Returns 1 if this filesystem can be mounted as requested,
+ * 0 if it cannot be.
+ */
+static int ext4_feature_set_ok(struct super_block *sb, int readonly)
+{
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, ~EXT4_FEATURE_INCOMPAT_SUPP)) {
+ 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));
+ return 0;
+ }
+
+ if (readonly)
+ return 1;
+
+ /* Check that feature set is OK for a read-write mount */
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, ~EXT4_FEATURE_RO_COMPAT_SUPP)) {
+ 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));
+ return 0;
+ }
+ /*
+ * Large file size enabled file system can only be mounted
+ * read-write on 32-bit systems if kernel is built with CONFIG_LBDAF
+ */
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
+ if (sizeof(blkcnt_t) < sizeof(u64)) {
+ ext4_msg(sb, KERN_ERR, "Filesystem with huge files "
+ "cannot be mounted RDWR without "
+ "CONFIG_LBDAF");
+ return 0;
+ }
+ }
+ return 1;
+}
+
static int ext4_fill_super(struct super_block *sb, void *data, int silent)
__releases(kernel_lock)
__acquires(kernel_lock)
-
{
struct buffer_head *bh;
struct ext4_super_block *es = NULL;
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;
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;
}
/*
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, BARRIER);
*/
set_opt(sbi->s_mount_opt, DELALLOC);
-
if (!parse_options((char *) data, sb, &journal_devnum,
&journal_ioprio, NULL, 0))
goto failed_mount;
(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");
+ 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
* previously didn't change the revision level when setting the flags,
* so there is a chance incompat flags are set on a rev 0 filesystem.
*/
- 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(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(EXT4_SB(sb)->s_es->s_feature_ro_compat) &
- ~EXT4_FEATURE_RO_COMPAT_SUPP));
+ if (!ext4_feature_set_ok(sb, (sb->s_flags & MS_RDONLY)))
goto failed_mount;
- }
- 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_LBD
- */
- if (sizeof(root->i_blocks) < sizeof(u64) &&
- !(sb->s_flags & MS_RDONLY)) {
- printk(KERN_ERR "EXT4-fs: %s: Filesystem with huge "
- "files cannot be mounted read-write "
- "without CONFIG_LBD.\n", sb->s_id);
- goto failed_mount;
- }
- }
+
blocksize = BLOCK_SIZE << le32_to_cpu(es->s_log_block_size);
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;
}
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;
}
}
+ has_huge_files = EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_HUGE_FILE);
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 ((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",
+ 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++)
sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]);
sbi->s_def_hash_version = es->s_def_hash_version;
}
if (sbi->s_blocks_per_group > blocksize * 8) {
- printk(KERN_ERR
- "EXT4-fs: #blocks per group too big: %lu\n",
+ 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",
+ 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);
+ /*
+ * Test whether we have more sectors than will fit in sector_t,
+ * and whether the max offset is addressable by the page cache.
+ */
+ if ((ext4_blocks_count(es) >
+ (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) ||
+ (ext4_blocks_count(es) >
+ (pgoff_t)(~0ULL) >> (PAGE_CACHE_SHIFT - sb->s_blocksize_bits))) {
+ ext4_msg(sb, KERN_ERR, "filesystem"
+ " too large to mount safely on this system");
if (sizeof(sector_t) < 8)
- printk(KERN_WARNING "EXT4-fs: CONFIG_LBD not "
- "enabled\n");
+ ext4_msg(sb, KERN_WARNING, "CONFIG_LBDAF not enabled");
+ ret = -EFBIG;
goto failed_mount;
}
/* 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) {
- printk(KERN_WARNING "EXT4-fs: bad geometry: block count %llu "
- "exceeds size of device (%llu blocks)\n",
+ 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)) {
- printk(KERN_WARNING "EXT4-fs: bad geometry: first data"
- "block %u is beyond end of filesystem (%llu)\n",
- le32_to_cpu(es->s_first_data_block),
- ext4_blocks_count(es));
+ /*
+ * 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) -
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)) {
- printk(KERN_WARNING "EXT4-fs: groups count too large: %u "
+ ext4_msg(sb, KERN_WARNING, "groups count too large: %u "
"(block count %llu, first data block %u, "
- "blocks per group %lu)\n", sbi->s_groups_count,
+ "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;
+ sbi->s_blockfile_groups = min_t(ext4_group_t, sbi->s_groups_count,
+ (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb)));
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 *),
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;
}
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");
+ 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_dirtyblocks_counter, 0);
}
if (err) {
- printk(KERN_ERR "EXT4-fs: insufficient memory\n");
+ ext4_msg(sb, KERN_ERR, "insufficient memory");
goto failed_mount3;
}
sbi->s_stripe = ext4_get_stripe_size(sbi);
+ sbi->s_max_writeback_mb_bump = 128;
/*
* set up enough so that it can read an inode
EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) {
if (ext4_load_journal(sb, es, journal_devnum))
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_fill_super: Journal transaction "
- "%u is corrupt\n", sb->s_id,
- EXT4_SB(sb)->s_journal->j_failed_commit);
- if (test_opt(sb, ERRORS_RO)) {
- printk(KERN_CRIT
- "Mounting filesystem read-only\n");
- 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, 1);
- goto failed_mount4;
- }
- }
} else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) &&
EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
- printk(KERN_ERR "EXT4-fs: required journal recovery "
- "suppressed and not mounted read-only\n");
+ ext4_msg(sb, KERN_ERR, "required journal recovery "
+ "suppressed and not mounted read-only");
goto failed_mount4;
} else {
clear_opt(sbi->s_mount_opt, DATA_FLAGS);
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-fs: 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:
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);
}
}
+ EXT4_SB(sb)->dio_unwritten_wq = create_workqueue("ext4-dio-unwritten");
+ if (!EXT4_SB(sb)->dio_unwritten_wq) {
+ printk(KERN_ERR "EXT4-fs: failed to create DIO workqueue\n");
+ goto failed_mount_wq;
+ }
+
/*
* The jbd2_journal_load will have done any necessary log recovery,
* so we can safely mount the rest of the filesystem now.
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;
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");
}
- if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
- printk(KERN_WARNING "EXT4-fs: Ignoring delalloc option - "
- "requested data journaling mode\n");
+ if (test_opt(sb, DELALLOC) &&
+ (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))
- printk(KERN_INFO "EXT4-fs: delayed allocation enabled\n");
+ }
+
+ 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) {
- printk(KERN_ERR "EXT4-fs: failed to initalize mballoc (%d)\n",
- err);
+ ext4_msg(sb, KERN_ERR, "failed to initalize mballoc (%d)",
+ err);
goto failed_mount4;
}
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_msg(sb, KERN_INFO, "recovery complete");
ext4_mark_recovery_complete(sb, es);
}
if (EXT4_SB(sb)->s_journal) {
} else
descr = "out journal";
- printk(KERN_INFO "EXT4-fs: mounted filesystem %s with%s\n",
- sb->s_id, descr);
+ 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:
- printk(KERN_ERR "EXT4-fs (device %s): mount failed\n", sb->s_id);
+ ext4_msg(sb, KERN_ERR, "mount failed");
+ destroy_workqueue(EXT4_SB(sb)->dio_unwritten_wq);
+failed_mount_wq:
+ ext4_release_system_zone(sb);
if (sbi->s_journal) {
jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
brelse(bh);
out_fail:
sb->s_fs_info = NULL;
+ kfree(sbi->s_blockgroup_lock);
kfree(sbi);
lock_kernel();
return ret;
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: %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;
}
BUG_ON(!EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL));
- bdev = ext4_blkdev_get(j_dev);
+ bdev = ext4_blkdev_get(j_dev, sb);
if (bdev == NULL)
return NULL;
if (bd_claim(bdev, sb)) {
- printk(KERN_ERR
- "EXT4-fs: failed to claim external journal device.\n");
+ 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:
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)
- printk(KERN_INFO "EXT4-fs: barriers enabled\n");
- else
- printk(KERN_INFO "EXT4-fs: barriers disabled\n");
+ if (!(journal->j_flags & JBD2_BARRIER))
+ 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;
}
* be remapped. Nothing we can do but to retry the
* write and hope for the best.
*/
- printk(KERN_ERR "EXT4-fs: previous I/O error to "
- "superblock detected for %s.\n", sb->s_id);
+ 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());
+ /*
+ * If the file system is mounted read-only, don't update the
+ * superblock write time. This avoids updating the superblock
+ * write time when we are mounting the root file system
+ * read/only but we need to replay the journal; at that point,
+ * for people who are east of GMT and who make their clock
+ * tick in localtime for Windows bug-for-bug compatibility,
+ * the clock is set in the future, and this will cause e2fsck
+ * to complain and force a full file system check.
+ */
+ if (!(sb->s_flags & MS_RDONLY))
+ es->s_wtime = cpu_to_le32(get_seconds());
es->s_kbytes_written =
cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
error = buffer_write_io_error(sbh);
if (error) {
- printk(KERN_ERR "EXT4-fs: I/O error while writing "
- "superblock for %s.\n", sb->s_id);
+ 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
static void ext4_write_super(struct super_block *sb)
{
+ lock_super(sb);
ext4_commit_super(sb, 1);
+ unlock_super(sb);
}
static int ext4_sync_fs(struct super_block *sb, int wait)
{
int ret = 0;
tid_t target;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
- trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
- if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
+ trace_ext4_sync_fs(sb, wait);
+ flush_workqueue(sbi->dio_unwritten_wq);
+ if (jbd2_journal_start_commit(sbi->s_journal, &target)) {
if (wait)
- jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, target);
+ jbd2_log_wait_commit(sbi->s_journal, target);
}
return ret;
}
int i;
#endif
+ lock_kernel();
+
/* Store the original options */
+ lock_super(sb);
old_sb_flags = sb->s_flags;
old_opts.s_mount_opt = sbi->s_mount_opt;
old_opts.s_resuid = sbi->s_resuid;
goto restore_opts;
}
- if (sbi->s_mount_opt & EXT4_MOUNT_ABORT)
+ if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED)
ext4_abort(sb, __func__, "Abort forced by user");
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) ||
n_blocks_count > ext4_blocks_count(es)) {
- if (sbi->s_mount_opt & EXT4_MOUNT_ABORT) {
+ if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
err = -EROFS;
goto restore_opts;
}
if (sbi->s_journal)
ext4_mark_recovery_complete(sb, es);
} else {
- int ret;
- if ((ret = EXT4_HAS_RO_COMPAT_FEATURE(sb,
- ~EXT4_FEATURE_RO_COMPAT_SUPP))) {
- printk(KERN_WARNING "EXT4-fs: %s: couldn't "
- "remount RDWR because of unsupported "
- "optional features (%x).\n", sb->s_id,
- (le32_to_cpu(sbi->s_es->s_feature_ro_compat) &
- ~EXT4_FEATURE_RO_COMPAT_SUPP));
+ /* Make sure we can mount this feature set readwrite */
+ if (!ext4_feature_set_ok(sb, 0)) {
err = -EROFS;
goto restore_opts;
}
-
/*
* Make sure the group descriptor checksums
- * are sane. If they aren't, refuse to
- * remount r/w.
+ * 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)) {
- printk(KERN_ERR
- "EXT4-fs: ext4_remount: "
- "Checksum for group %u failed (%u!=%u)\n",
+ 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;
* 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;
}
sb->s_flags &= ~MS_RDONLY;
}
}
+ ext4_setup_system_zone(sb);
if (sbi->s_journal == NULL)
ext4_commit_super(sb, 1);
old_opts.s_qf_names[i] != sbi->s_qf_names[i])
kfree(old_opts.s_qf_names[i]);
#endif
+ unlock_super(sb);
+ unlock_kernel();
return 0;
+
restore_opts:
sb->s_flags = old_sb_flags;
sbi->s_mount_opt = old_opts.s_mount_opt;
sbi->s_qf_names[i] = old_opts.s_qf_names[i];
}
#endif
+ unlock_super(sb);
+ unlock_kernel();
return err;
}
buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last;
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))
buf->f_bavail = 0;
buf->f_files = le32_to_cpu(es->s_inodes_count);
buf->f_ffree = percpu_counter_sum_positive(&sbi->s_freeinodes_counter);
- es->s_free_inodes_count = cpu_to_le32(buf->f_ffree);
buf->f_namelen = EXT4_NAME_LEN;
fsid = le64_to_cpup((void *)es->s_uuid) ^
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()
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);
}
/*
if (EXT4_SB(sb)->s_qf_names[type]) {
/* Quotafile not in fs root? */
if (path.dentry->d_parent != sb->s_root)
- printk(KERN_WARNING
- "EXT4-fs: Quota file not on filesystem root. "
- "Journaled quota will not work.\n");
+ ext4_msg(sb, KERN_WARNING,
+ "Quota file not on filesystem root. "
+ "Journaled quota will not work");
}
/*
handle_t *handle = journal_current_handle();
if (EXT4_SB(sb)->s_journal && !handle) {
- printk(KERN_WARNING "EXT4-fs: Quota write (off=%llu, len=%llu)"
- " cancelled because transaction is not started.\n",
+ 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;
}
#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 = {
+#if !defined(CONTIG_EXT2_FS) && !defined(CONFIG_EXT2_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23)
+static struct file_system_type ext2_fs_type = {
.owner = THIS_MODULE,
- .name = "ext4",
+ .name = "ext2",
.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)
+static inline void register_as_ext2(void)
{
- printk(KERN_WARNING "EXT4-fs: Update your userspace programs "
- "to mount using ext4\n");
- printk(KERN_WARNING "EXT4-fs: ext4dev backwards compatibility "
- "will go away by 2.6.31\n");
- return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt);
+ int err = register_filesystem(&ext2_fs_type);
+ if (err)
+ printk(KERN_WARNING
+ "EXT4-fs: Unable to register as ext2 (%d)\n", err);
}
-static struct file_system_type ext4dev_fs_type = {
+static inline void unregister_as_ext2(void)
+{
+ unregister_filesystem(&ext2_fs_type);
+}
+#else
+static inline void register_as_ext2(void) { }
+static inline void unregister_as_ext2(void) { }
+#endif
+
+#if !defined(CONTIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23)
+static struct file_system_type ext3_fs_type = {
.owner = THIS_MODULE,
- .name = "ext4dev",
- .get_sb = ext4dev_get_sb,
+ .name = "ext3",
+ .get_sb = ext4_get_sb,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
-MODULE_ALIAS("ext4dev");
+
+static inline void register_as_ext3(void)
+{
+ int err = register_filesystem(&ext3_fs_type);
+ if (err)
+ printk(KERN_WARNING
+ "EXT4-fs: Unable to register as ext3 (%d)\n", err);
+}
+
+static inline void unregister_as_ext3(void)
+{
+ unregister_filesystem(&ext3_fs_type);
+}
+#else
+static inline void register_as_ext3(void) { }
+static inline void unregister_as_ext3(void) { }
#endif
+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,
+};
+
static int __init init_ext4_fs(void)
{
int err;
+ err = init_ext4_system_zone();
+ if (err)
+ return err;
ext4_kset = kset_create_and_add("ext4", NULL, fs_kobj);
if (!ext4_kset)
- return -ENOMEM;
+ goto out4;
ext4_proc_root = proc_mkdir("fs/ext4", NULL);
err = init_ext4_mballoc();
if (err)
- return err;
+ goto out3;
err = init_ext4_xattr();
if (err)
err = init_inodecache();
if (err)
goto out1;
+ register_as_ext2();
+ register_as_ext3();
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:
+ unregister_as_ext2();
+ unregister_as_ext3();
destroy_inodecache();
out1:
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_as_ext2();
+ unregister_as_ext3();
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");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff