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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

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Pull ext4 bug fixes from Ted Ts'o:
 "Various bug fixes for ext4.  The most important is a fix for the new
  extent cache's slab shrinker which can cause significant, user-visible
  pauses when the system is under memory pressure."

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: enable quotas before orphan cleanup
  ext4: don't allow quota mount options when quota feature enabled
  ext4: fix a warning from sparse check for ext4_dir_llseek
  ext4: convert number of blocks to clusters properly
  ext4: fix possible memory leak in ext4_remount()
  jbd2: fix ERR_PTR dereference in jbd2__journal_start
  ext4: use percpu counter for extent cache count
  ext4: optimize ext4_es_shrink()
This commit is contained in:
Linus Torvalds
2013-03-02 19:33:21 -08:00
parent 6ec40b4230 9b2ff35753
commit a7c1120d2d
9 changed files with 79 additions and 82 deletions
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61
fs/ext4/super.c
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@@ -783,6 +783,7 @@ static void ext4_put_super(struct super_block *sb)
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
percpu_counter_destroy(&sbi->s_extent_cache_cnt);
brelse(sbi->s_sbh);
#ifdef CONFIG_QUOTA
for (i = 0; i < MAXQUOTAS; i++)
@@ -1247,6 +1248,11 @@ static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
"quota options when quota turned on");
return -1;
}
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) {
ext4_msg(sb, KERN_ERR, "Cannot set journaled quota options "
"when QUOTA feature is enabled");
return -1;
}
qname = match_strdup(args);
if (!qname) {
ext4_msg(sb, KERN_ERR,
@@ -1544,6 +1550,13 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
"quota options when quota turned on");
return -1;
}
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_QUOTA)) {
ext4_msg(sb, KERN_ERR,
"Cannot set journaled quota options "
"when QUOTA feature is enabled");
return -1;
}
sbi->s_jquota_fmt = m->mount_opt;
#endif
} else {
@@ -1592,6 +1605,12 @@ static int parse_options(char *options, struct super_block *sb,
return 0;
}
#ifdef CONFIG_QUOTA
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
(test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA "
"feature is enabled");
return 0;
}
if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
clear_opt(sb, USRQUOTA);
@@ -3161,7 +3180,7 @@ int ext4_calculate_overhead(struct super_block *sb)
}
/* Add the journal blocks as well */
if (sbi->s_journal)
overhead += EXT4_B2C(sbi, sbi->s_journal->j_maxlen);
overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen);
sbi->s_overhead = overhead;
smp_wmb();
@@ -3688,6 +3707,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (!err) {
err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0);
}
if (!err) {
err = percpu_counter_init(&sbi->s_extent_cache_cnt, 0);
}
if (err) {
ext4_msg(sb, KERN_ERR, "insufficient memory");
goto failed_mount3;
@@ -3711,13 +3733,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sb->s_export_op = &ext4_export_ops;
sb->s_xattr = ext4_xattr_handlers;
#ifdef CONFIG_QUOTA
sb->s_qcop = &ext4_qctl_operations;
sb->dq_op = &ext4_quota_operations;
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA)) {
/* Use qctl operations for hidden quota files. */
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA))
sb->s_qcop = &ext4_qctl_sysfile_operations;
}
else
sb->s_qcop = &ext4_qctl_operations;
#endif
memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
@@ -3913,6 +3933,16 @@ no_journal:
if (err)
goto failed_mount7;
#ifdef CONFIG_QUOTA
/* Enable quota usage during mount. */
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
!(sb->s_flags & MS_RDONLY)) {
err = ext4_enable_quotas(sb);
if (err)
goto failed_mount8;
}
#endif /* CONFIG_QUOTA */
EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS;
ext4_orphan_cleanup(sb, es);
EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS;
@@ -3930,16 +3960,6 @@ no_journal:
} else
descr = "out journal";
#ifdef CONFIG_QUOTA
/* Enable quota usage during mount. */
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
!(sb->s_flags & MS_RDONLY)) {
err = ext4_enable_quotas(sb);
if (err)
goto failed_mount8;
}
#endif /* CONFIG_QUOTA */
if (test_opt(sb, DISCARD)) {
struct request_queue *q = bdev_get_queue(sb->s_bdev);
if (!blk_queue_discard(q))
@@ -3993,6 +4013,7 @@ failed_mount3:
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
percpu_counter_destroy(&sbi->s_extent_cache_cnt);
if (sbi->s_mmp_tsk)
kthread_stop(sbi->s_mmp_tsk);
failed_mount2:
@@ -4538,6 +4559,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
if (!old_opts.s_qf_names[i]) {
for (j = 0; j < i; j++)
kfree(old_opts.s_qf_names[j]);
kfree(orig_data);
return -ENOMEM;
}
} else
@@ -4816,9 +4838,12 @@ static int ext4_release_dquot(struct dquot *dquot)
static int ext4_mark_dquot_dirty(struct dquot *dquot)
{
struct super_block *sb = dquot->dq_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
/* Are we journaling quotas? */
if (EXT4_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] ||
EXT4_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) {
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) ||
sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
dquot_mark_dquot_dirty(dquot);
return ext4_write_dquot(dquot);
} else {