From f0c5bae5cc562307f804335ddec3f793254c3766 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 8 Jun 2017 16:18:54 +0200 Subject: [PATCH] quota: Remove locking for writing to the old quota format The old quota quota format has fixed offset in quota file based on ID so there's no locking needed against concurrent modifications of the file (locking against concurrent IO on the same dquot is still provided by dq_lock). Reviewed-by: Andreas Dilger Signed-off-by: Jan Kara --- fs/quota/quota_v1.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c index 94cceb76b9a3..12d69cda57cc 100644 --- a/fs/quota/quota_v1.c +++ b/fs/quota/quota_v1.c @@ -83,9 +83,7 @@ static int v1_commit_dqblk(struct dquot *dquot) short type = dquot->dq_id.type; ssize_t ret; struct v1_disk_dqblk dqblk; - struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); - down_write(&dqopt->dqio_sem); v1_mem2disk_dqblk(&dqblk, &dquot->dq_dqb); if (((type == USRQUOTA) && uid_eq(dquot->dq_id.uid, GLOBAL_ROOT_UID)) || ((type == GRPQUOTA) && gid_eq(dquot->dq_id.gid, GLOBAL_ROOT_GID))) { @@ -99,7 +97,6 @@ static int v1_commit_dqblk(struct dquot *dquot) ret = dquot->dq_sb->s_op->quota_write(dquot->dq_sb, type, (char *)&dqblk, sizeof(struct v1_disk_dqblk), v1_dqoff(from_kqid(&init_user_ns, dquot->dq_id))); - up_write(&dqopt->dqio_sem); if (ret != sizeof(struct v1_disk_dqblk)) { quota_error(dquot->dq_sb, "dquota write failed"); if (ret >= 0) -- 2.20.1