ext4: remove quota allocation when ext4_mb_new_blocks fails
Quota allocation is not removed when ext4_mb_new_blocks calls
kmem_cache_alloc failed. Also make sure the allocation context is freed
on the error path.
Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 5dcb826..cde232b 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4058,8 +4058,9 @@
ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS);
if (!ac) {
+ ar->len = 0;
*errp = -ENOMEM;
- return 0;
+ goto out1;
}
ext4_mb_poll_new_transaction(sb, handle);
@@ -4067,7 +4068,7 @@
*errp = ext4_mb_initialize_context(ac, ar);
if (*errp) {
ar->len = 0;
- goto out;
+ goto out2;
}
ac->ac_op = EXT4_MB_HISTORY_PREALLOC;
@@ -4115,11 +4116,12 @@
ext4_mb_release_context(ac);
-out:
+out2:
+ kmem_cache_free(ext4_ac_cachep, ac);
+out1:
if (ar->len < inquota)
DQUOT_FREE_BLOCK(ar->inode, inquota - ar->len);
- kmem_cache_free(ext4_ac_cachep, ac);
return block;
}
static void ext4_mb_poll_new_transaction(struct super_block *sb,