From: Yongqiang Yang <xiaoqiangnk@gmail.com>
To: linux-ext4@vger.kernel.org
Cc: tytso@mit.edu, Yongqiang Yang <xiaoqiangnk@gmail.com>
Subject: [PATCH 1/2] ext4: check free block counters in ext4_mb_find_by_goal
Date: Sun, 2 Sep 2012 17:45:08 +0800 [thread overview]
Message-ID: <1346579109-25016-1-git-send-email-xiaoqiangnk@gmail.com> (raw)
Free block counters should be checked before doing allocation.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
---
fs/ext4/mballoc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 6873571..5d4c21a 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1659,10 +1659,13 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
int max;
int err;
struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
+ struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group);
struct ext4_free_extent ex;
if (!(ac->ac_flags & EXT4_MB_HINT_TRY_GOAL))
return 0;
+ if (grp->bb_free == 0)
+ return 0;
err = ext4_mb_load_buddy(ac->ac_sb, group, e4b);
if (err)
--
1.7.5.1
next reply other threads:[~2012-09-02 10:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-02 9:45 Yongqiang Yang [this message]
2012-09-02 9:45 ` [PATCH 2/2] ext4: check free inode count before allocaing an inode Yongqiang Yang
2012-09-05 2:17 ` Yongqiang Yang
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