Messages in this thread Patch in this message | | | Subject | [PATCH] quota: add missing lock into __dquot_transfer() | From | Konstantin Khlebnikov <> | Date | Sat, 09 Sep 2017 12:19:22 +0300 |
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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") --- fs/quota/dquot.c | 2 ++ 1 file changed, 2 insertions(+)
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; } }
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