#include <linux/namei.h>
#include <linux/quotaops.h>
#include <linux/seq_file.h>
+#include <linux/proc_fs.h>
+#include <linux/marker.h>
#include <linux/log2.h>
#include <linux/crc16.h>
#include <asm/uaccess.h>
#include "namei.h"
#include "group.h"
+struct proc_dir_entry *ext4_proc_root;
+
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 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_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 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(struct super_block *sb);
static void ext4_write_super_lockfs(struct super_block *sb);
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)) {
+ printk(KERN_CRIT "Remounting filesystem read-only\n");
sb->s_flags |= MS_RDONLY;
}
ext4_commit_super(sb, es, 1);
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");
+ 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);
jbd2_journal_abort(EXT4_SB(sb)->s_journal, -EIO);
}
-void ext4_warning (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext4_warning(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
va_list args;
}
}
-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;
ext4_mb_release(sb);
ext4_ext_release(sb);
ext4_xattr_put_super(sb);
- jbd2_journal_destroy(sbi->s_journal);
+ if (jbd2_journal_destroy(sbi->s_journal) < 0)
+ ext4_abort(sb, __func__, "Couldn't clean up the journal");
sbi->s_journal = NULL;
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);
}
+ if (sbi->s_proc) {
+ remove_proc_entry("inode_readahead_blks", sbi->s_proc);
+ remove_proc_entry(sb->s_id, ext4_proc_root);
+ }
for (i = 0; i < sbi->s_gdb_count; i++)
brelse(sbi->s_group_desc[i]);
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++)
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);
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);
+ ext4_discard_preallocations(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, ",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))
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");
+
ext4_show_quota_options(seq, sb);
return 0;
}
}
#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);
Opt_commit, Opt_journal_update, Opt_journal_inum, 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_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_nodelalloc,
+ Opt_inode_readahead_blks
};
static match_table_t tokens = {
{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_offusrjquota, "usrjquota="},
{Opt_usrjquota, "usrjquota=%s"},
{Opt_offgrpjquota, "grpjquota="},
{Opt_resize, "resize"},
{Opt_delalloc, "delalloc"},
{Opt_nodelalloc, "nodelalloc"},
+ {Opt_inode_readahead_blks, "inode_readahead_blks=%u"},
{Opt_err, NULL},
};
/*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;
}
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)
+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)
{
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);
+ set_opt(sbi->s_mount_opt, NO_UID32);
break;
case Opt_nocheck:
- clear_opt (sbi->s_mount_opt, CHECK);
+ clear_opt(sbi->s_mount_opt, CHECK);
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");
+ printk(KERN_ERR "EXT4 (no)user_xattr options "
+ "not supported\n");
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");
+ printk(KERN_ERR "EXT4 (no)acl options "
+ "not supported\n");
break;
#endif
case Opt_reservation:
"journal on remount\n");
return 0;
}
- set_opt (sbi->s_mount_opt, UPDATE_JOURNAL);
+ set_opt(sbi->s_mount_opt, UPDATE_JOURNAL);
break;
case Opt_journal_inum:
if (is_remount) {
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))
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;
#ifdef CONFIG_QUOTA
case Opt_usrjquota:
qtype = USRQUOTA;
sb_any_quota_suspended(sb)) &&
!sbi->s_qf_names[qtype]) {
printk(KERN_ERR
- "EXT4-fs: Cannot change journaled "
- "quota options when quota turned on.\n");
+ "EXT4-fs: Cannot change journaled "
+ "quota options when quota turned on.\n");
return 0;
}
qname = match_strdup(&args[0]);
"on this filesystem, use tune2fs\n");
return 0;
}
- set_opt (sbi->s_mount_opt, EXTENTS);
+ set_opt(sbi->s_mount_opt, EXTENTS);
break;
case Opt_noextents:
/*
"-o noextents options\n");
return 0;
}
- clear_opt (sbi->s_mount_opt, EXTENTS);
+ clear_opt(sbi->s_mount_opt, EXTENTS);
break;
case Opt_i_version:
set_opt(sbi->s_mount_opt, I_VERSION);
case Opt_nodelalloc:
clear_opt(sbi->s_mount_opt, DELALLOC);
break;
- case Opt_mballoc:
- set_opt(sbi->s_mount_opt, MBALLOC);
- break;
- case Opt_nomballoc:
- clear_opt(sbi->s_mount_opt, MBALLOC);
- break;
case Opt_stripe:
if (match_int(&args[0], &option))
return 0;
case Opt_delalloc:
set_opt(sbi->s_mount_opt, DELALLOC);
break;
+ case Opt_inode_readahead_blks:
+ if (match_int(&args[0], &option))
+ return 0;
+ if (option < 0 || option > (1 << 30))
+ return 0;
+ sbi->s_inode_readahead_blks = option;
+ break;
default:
- printk (KERN_ERR
- "EXT4-fs: Unrecognized mount option \"%s\" "
- "or missing value\n", p);
+ printk(KERN_ERR
+ "EXT4-fs: Unrecognized mount option \"%s\" "
+ "or missing value\n", p);
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");
+ printk(KERN_ERR "EXT4-fs warning: revision level too high, "
+ "forcing read-only mode\n");
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");
+ printk(KERN_WARNING "EXT4-fs warning: mounting unchecked fs, "
+ "running e2fsck is recommended\n");
else if ((sbi->s_mount_state & EXT4_ERROR_FS))
- printk (KERN_WARNING
- "EXT4-fs warning: mounting fs with errors, "
- "running e2fsck is recommended\n");
+ printk(KERN_WARNING
+ "EXT4-fs warning: mounting fs with errors, "
+ "running e2fsck is recommended\n");
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");
+ printk(KERN_WARNING
+ "EXT4-fs warning: maximal mount count reached, "
+ "running e2fsck is recommended\n");
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");
+ 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
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));
- } else {
- printk("internal journal\n");
- }
+ 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);
return res;
}
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 *
+ /* We allocate both existing and potentially added groups */
+ flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
+ ((sbi->s_es->s_reserved_gdt_blocks +1 ) <<
+ EXT4_DESC_PER_BLOCK_BITS(sb))) /
+ groups_per_flex;
+ sbi->s_flex_groups = kzalloc(flex_group_count *
sizeof(struct flex_groups), GFP_KERNEL);
if (sbi->s_flex_groups == NULL) {
- printk(KERN_ERR "EXT4-fs: not enough memory\n");
+ printk(KERN_ERR "EXT4-fs: not enough memory for "
+ "%lu flex groups\n", 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;
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)
- {
+ 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 "
"(block %llu)!", i, block_bitmap);
return 0;
}
inode_bitmap = ext4_inode_bitmap(sb, gdp);
- if (inode_bitmap < first_block || inode_bitmap > last_block)
- {
+ 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 "
"(block %llu)!", i, inode_bitmap);
}
inode_table = ext4_inode_table(sb, gdp);
if (inode_table < first_block ||
- inode_table + sbi->s_itb_per_group - 1 > last_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 "
"(block %llu)!", i, inode_table);
"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));
- if (!(sb->s_flags & MS_RDONLY))
+ if (!(sb->s_flags & MS_RDONLY)) {
+ spin_unlock(sb_bgl_lock(sbi, i));
return 0;
+ }
}
spin_unlock(sb_bgl_lock(sbi, i));
if (!flexbg_flag)
}
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;
DQUOT_INIT(inode);
if (inode->i_nlink) {
printk(KERN_DEBUG
- "%s: truncating inode %lu to %Ld bytes\n",
+ "%s: truncating inode %lu to %lld bytes\n",
__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++;
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",
return 0;
}
-static int ext4_fill_super (struct super_block *sb, void *data, int silent)
+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;
unsigned long journal_devnum = 0;
unsigned long def_mount_opts;
struct inode *root;
+ char *cp;
int ret = -EINVAL;
int blocksize;
int db_count;
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;
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");
}
if (!(bh = sb_bread(sb, logical_sb_block))) {
- printk (KERN_ERR "EXT4-fs: unable to read superblock\n");
+ printk(KERN_ERR "EXT4-fs: unable to read superblock\n");
goto out_fail;
}
/*
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
ext4_warning(sb, __func__,
"extents feature not enabled on this filesystem, "
"use tune2fs.\n");
- /*
- * turn on mballoc code by default in ext4 filesystem
- * Use -o nomballoc to turn it off
- */
- set_opt(sbi->s_mount_opt, MBALLOC);
/*
* enable delayed allocation by default
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_inum, &journal_devnum,
+ NULL, 0))
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
"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;
- }
-
- /*
* 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.
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);
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");
+ printk(KERN_ERR
+ "EXT4-fs: Magic mismatch, very weird !\n");
goto failed_mount;
}
}
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);
+ printk(KERN_ERR
+ "EXT4-fs: unsupported inode size: %d\n",
+ sbi->s_inode_size);
goto failed_mount;
}
if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE)
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;
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);
+ printk(KERN_ERR
+ "EXT4-fs: #blocks per group too big: %lu\n",
+ 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);
+ printk(KERN_ERR
+ "EXT4-fs: #inodes per group too big: %lu\n",
+ sbi->s_inodes_per_group);
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");
+ printk(KERN_ERR "EXT4-fs: not enough memory\n");
goto failed_mount;
}
+#ifdef CONFIG_PROC_FS
+ if (ext4_proc_root)
+ sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
+
+ if (sbi->s_proc)
+ proc_create_data("inode_readahead_blks", 0644, sbi->s_proc,
+ &ext4_ui_proc_fops,
+ &sbi->s_inode_readahead_blks);
+#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);
+ printk(KERN_ERR "EXT4-fs: "
+ "can't read group descriptor %d\n", i);
db_count = i;
goto failed_mount2;
}
}
- if (!ext4_check_descriptors (sb)) {
+ if (!ext4_check_descriptors(sb)) {
printk(KERN_ERR "EXT4-fs: group descriptors corrupted!\n");
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");
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);
/*
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,
+ "%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");
+ 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);
goto failed_mount3;
} else {
if (!silent)
- printk (KERN_ERR
- "ext4: No journal on filesystem on %s\n",
- sb->s_id);
+ printk(KERN_ERR
+ "ext4: No journal on filesystem on %s\n",
+ sb->s_id);
goto failed_mount3;
}
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) {
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");
+ 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");
+ 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 (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
printk(KERN_WARNING "EXT4-fs: Ignoring delalloc option - "
printk(KERN_INFO "EXT4-fs: delayed allocation enabled\n");
ext4_ext_init(sb);
- ext4_mb_init(sb, needs_recovery);
+ err = ext4_mb_init(sb, needs_recovery);
+ if (err) {
+ printk(KERN_ERR "EXT4-fs: failed to initalize mballoc (%d)\n",
+ err);
+ goto failed_mount4;
+ }
lock_kernel();
return 0;
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("inode_readahead_blks", 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]);
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);
}
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");
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);
"unavailable, cannot proceed.\n");
return -EROFS;
}
- printk (KERN_INFO "EXT4-fs: write access will "
- "be enabled during recovery.\n");
+ printk(KERN_INFO "EXT4-fs: write access will "
+ "be enabled during recovery.\n");
}
}
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 (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {
err = jbd2_journal_update_format(journal);
if (err) {
return 0;
}
-static int ext4_create_journal(struct super_block * sb,
- struct ext4_super_block * es,
+static int ext4_create_journal(struct super_block *sb,
+ struct ext4_super_block *es,
unsigned int journal_inum)
{
journal_t *journal;
return 0;
}
-static void ext4_commit_super (struct super_block * sb,
- struct ext4_super_block * es,
- int sync)
+static void ext4_commit_super(struct super_block *sb,
+ struct ext4_super_block *es, int sync)
{
struct buffer_head *sbh = EXT4_SB(sb)->s_sbh;
if (!sbh)
return;
+ 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.
+ */
+ printk(KERN_ERR "ext4: previous I/O error to "
+ "superblock detected for %s.\n", sb->s_id);
+ 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));
BUFFER_TRACE(sbh, "marking dirty");
mark_buffer_dirty(sbh);
- if (sync)
+ if (sync) {
sync_dirty_buffer(sbh);
+ if (buffer_write_io_error(sbh)) {
+ printk(KERN_ERR "ext4: I/O error while writing "
+ "superblock for %s.\n", sb->s_id);
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+ }
}
* 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;
jbd2_journal_lock_updates(journal);
- jbd2_journal_flush(journal);
+ if (jbd2_journal_flush(journal) < 0)
+ goto out;
+
lock_super(sb);
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER) &&
sb->s_flags & MS_RDONLY) {
ext4_commit_super(sb, es, 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;
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, es, 1);
jbd2_journal_clear_err(journal);
}
* 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();
{
tid_t target;
+ trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
sb->s_dirt = 0;
if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
if (wait)
/* Now we set up the journal barrier. */
jbd2_journal_lock_updates(journal);
- jbd2_journal_flush(journal);
+
+ /*
+ * We don't want to clear needs_recovery flag when we failed
+ * to flush the journal.
+ */
+ if (jbd2_journal_flush(journal) < 0)
+ return;
/* Journal blocked and flushed, clear needs_recovery flag. */
EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
}
}
-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;
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;
}
}
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);
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))
}
/* Journaling quota? */
if (EXT4_SB(sb)->s_qf_names[type]) {
- /* Quotafile not of fs root? */
+ /* Quotafile not in 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");
- }
+ }
/*
* When we journal data on quota file, we have to flush journal to see
* 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(&nd.path);
+ return err;
+ }
}
+ err = vfs_quota_on_path(sb, type, format_id, &nd.path);
path_put(&nd.path);
- return vfs_quota_on(sb, type, format_id, path, remount);
+ return err;
}
/* Read data from quotafile - avoid pagecache and such because we cannot afford
handle_t *handle = journal_current_handle();
if (!handle) {
- printk(KERN_WARNING "EXT4-fs: Quota write (off=%Lu, len=%Lu)"
+ printk(KERN_WARNING "EXT4-fs: Quota write (off=%llu, len=%llu)"
" cancelled because transaction is not started.\n",
(unsigned long long)off, (unsigned long long)len);
return -EIO;
return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt);
}
+#ifdef CONFIG_PROC_FS
+static int ext4_ui_proc_show(struct seq_file *m, void *v)
+{
+ unsigned int *p = m->private;
+
+ seq_printf(m, "%u\n", *p);
+ return 0;
+}
+
+static int ext4_ui_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ext4_ui_proc_show, PDE(inode)->data);
+}
+
+static ssize_t ext4_ui_proc_write(struct file *file, const char __user *buf,
+ size_t cnt, loff_t *ppos)
+{
+ unsigned int *p = PDE(file->f_path.dentry->d_inode)->data;
+ char str[32];
+ unsigned long value;
+
+ if (cnt >= sizeof(str))
+ return -EINVAL;
+ if (copy_from_user(str, buf, cnt))
+ return -EFAULT;
+ value = simple_strtol(str, NULL, 0);
+ if (value < 0)
+ return -ERANGE;
+ *p = value;
+ return cnt;
+}
+
+const struct file_operations ext4_ui_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = ext4_ui_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = ext4_ui_proc_write,
+};
+#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,
+};
+
+#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: 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);
+}
+
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;
+ ext4_proc_root = proc_mkdir("fs/ext4", NULL);
err = init_ext4_mballoc();
if (err)
return 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();
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);
}
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