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ext4: force block allocation on quota_off 

Perform full sync procedure so that any delayed allocation blocks are
allocated so quota will be consistent.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Dmitry Monakhov 2010-08-01 17:48:36 -04:00 committed by Theodore Ts'o
parent 437f88cc03
commit ca0e05e4b1
1 changed files with 14 additions and 1 deletions
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15
fs/ext4/super.c
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@ -1118,6 +1118,7 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot);
static int ext4_write_info(struct super_block *sb, int type);
static int ext4_quota_on(struct super_block *sb, int type, int format_id,
char *path);
static int ext4_quota_off(struct super_block *sb, int type);
static int ext4_quota_on_mount(struct super_block *sb, int type);
static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off);
@ -1139,7 +1140,7 @@ static const struct dquot_operations ext4_quota_operations = {
static const struct quotactl_ops ext4_qctl_operations = {
.quota_on = ext4_quota_on,
.quota_off = dquot_quota_off,
.quota_off = ext4_quota_off,
.quota_sync = dquot_quota_sync,
.get_info = dquot_get_dqinfo,
.set_info = dquot_set_dqinfo,
@ -4098,6 +4099,18 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
return err;
}
static int ext4_quota_off(struct super_block *sb, int type)
{
/* Force all delayed allocation blocks to be allocated */
if (test_opt(sb, DELALLOC)) {
down_read(&sb->s_umount);
sync_filesystem(sb);
up_read(&sb->s_umount);
}
return dquot_quota_off(sb, type);
}
/* Read data from quotafile - avoid pagecache and such because we cannot afford
* acquiring the locks... As quota files are never truncated and quota code
* itself serializes the operations (and noone else should touch the files)