From 0a51fb7174f2b7866b4d7a4a5c23b685b674beb6 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Sat, 9 Sep 2017 12:19:22 +0300 Subject: quota: add missing lock into __dquot_transfer() Lock dq_dqb_lock around dquot_decr_inodes() Signed-off-by: Konstantin Khlebnikov Fixes: 7b9ca4c61bc2 ("quota: Reduce contention on dq_data_lock") Signed-off-by: Jan Kara --- fs/quota/dquot.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/quota') 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; } } -- cgit v1.2.3-70-g09d2