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ext4: check free block counters in ext4_mb_find_by_goal 

Free block counters should be checked before doing allocation.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
hifive-unleashed-5.1
Yongqiang Yang 2012-09-23 23:10:51 -04:00 committed by Theodore Ts'o
parent 50df9fd55e
commit 838cd0cf9a
1 changed files with 3 additions and 0 deletions
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3
fs/ext4/mballoc.c
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@ -1660,10 +1660,13 @@ 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)