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ext4: do not destroy ext4_groupinfo_caches if ext4_mb_init() fails

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Caches from 'ext4_groupinfo_caches' may be in use by other mounts,
which have already existed.  So, it is incorrect to destroy them when
newly requested mount fails.

Found by Linux File System Verification project (linuxtesting.org).

Signed-off-by: Andrey Tsyvarev <tsyvarev@ispras.ru>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
This commit is contained in:
Andrey Tsyvarev 2014-05-12 12:34:21 -04:00 committed by Theodore Ts'o
parent c197855ea1
commit 029b10c5a8
1 changed files with 1 additions and 3 deletions
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4
fs/ext4/mballoc.c
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@ -2617,7 +2617,7 @@ int ext4_mb_init(struct super_block *sb)
sbi->s_locality_groups = alloc_percpu(struct ext4_locality_group);
if (sbi->s_locality_groups == NULL) {
ret = -ENOMEM;
goto out_free_groupinfo_slab;
goto out;
}
for_each_possible_cpu(i) {
struct ext4_locality_group *lg;
@ -2642,8 +2642,6 @@ int ext4_mb_init(struct super_block *sb)
out_free_locality_groups:
free_percpu(sbi->s_locality_groups);
sbi->s_locality_groups = NULL;
out_free_groupinfo_slab:
ext4_groupinfo_destroy_slabs();
out:
kfree(sbi->s_mb_offsets);
sbi->s_mb_offsets = NULL;