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| author | Konstantin Khlebnikov <khlebnikov@yandex-team.ru> | 2017-09-09 12:19:22 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2017-09-18 12:23:58 +0200 |
| commit | 0a51fb7174f2b7866b4d7a4a5c23b685b674beb6 (patch) | |
| tree | 8247a34b9678d343e2f1970f9221cd743154ec54 /fs/quota | |
| parent | 0666f560b71b899cd11a7caf39fd45129e9030fd (diff) | |
| download | lwn-0a51fb7174f2b7866b4d7a4a5c23b685b674beb6.tar.gz lwn-0a51fb7174f2b7866b4d7a4a5c23b685b674beb6.zip | |
quota: add missing lock into __dquot_transfer()
Lock dq_dqb_lock around dquot_decr_inodes()
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: 7b9ca4c61bc2 ("quota: Reduce contention on dq_data_lock")
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
| -rw-r--r-- | fs/quota/dquot.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 8381db9db6d9..50b0556a124f 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1980,7 +1980,9 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) ret = dquot_add_space(transfer_to[cnt], cur_space, rsv_space, 0, &warn_to[cnt]); if (ret) { + spin_lock(&transfer_to[cnt]->dq_dqb_lock); dquot_decr_inodes(transfer_to[cnt], inode_usage); + spin_unlock(&transfer_to[cnt]->dq_dqb_lock); goto over_quota; } } |