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Btrfs: return as soon as possible when edquot happens

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If one of qgroup fails to reserve firstly, we should return immediately,
it is unnecessary to continue check.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Wang Shilong 2013-03-06 11:51:47 +00:00 committed by Chris Mason
parent 492104c866
commit 720f1e2060
1 changed files with 6 additions and 4 deletions
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10
fs/btrfs/qgroup.c
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@ -1525,21 +1525,23 @@ int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes)
if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) && if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) &&
qg->reserved + qg->rfer + num_bytes > qg->reserved + qg->rfer + num_bytes >
qg->max_rfer) qg->max_rfer) {
ret = -EDQUOT; ret = -EDQUOT;
goto out;
}
if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) && if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) &&
qg->reserved + qg->excl + num_bytes > qg->reserved + qg->excl + num_bytes >
qg->max_excl) qg->max_excl) {
ret = -EDQUOT; ret = -EDQUOT;
goto out;
}
list_for_each_entry(glist, &qg->groups, next_group) { list_for_each_entry(glist, &qg->groups, next_group) {
ulist_add(ulist, glist->group->qgroupid, ulist_add(ulist, glist->group->qgroupid,
(uintptr_t)glist->group, GFP_ATOMIC); (uintptr_t)glist->group, GFP_ATOMIC);
} }
} }
if (ret)
goto out;
/* /*
* no limits exceeded, now record the reservation into all qgroups * no limits exceeded, now record the reservation into all qgroups