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| author | Jan Kara <jack@suse.cz> | 2017-06-08 15:30:45 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2017-08-17 19:01:00 +0200 |
| commit | e342e38df925973b86cd46d40bbe7f083414e2ad (patch) | |
| tree | ace185b868c9439b20fc9febf997e29770d4dc37 /fs/quota | |
| parent | 5e8cb9b6249de3ac036ef4cf4b7babc2f4b95d90 (diff) | |
| download | linux-e342e38df925973b86cd46d40bbe7f083414e2ad.tar.gz linux-e342e38df925973b86cd46d40bbe7f083414e2ad.tar.bz2 linux-e342e38df925973b86cd46d40bbe7f083414e2ad.zip | |
quota: Push dqio_sem down to ->read_dqblk()
Push down acquisition of dqio_sem into ->read_dqblk() callback. It will
allow quota formats to decide whether they need it or not.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/quota')
| -rw-r--r-- | fs/quota/dquot.c | 5 | ||||
| -rw-r--r-- | fs/quota/quota_v1.c | 5 | ||||
| -rw-r--r-- | fs/quota/quota_v2.c | 10 |
3 files changed, 14 insertions, 6 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 8b52e852eba2..46046523abf0 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -403,11 +403,8 @@ int dquot_acquire(struct dquot *dquot) struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); - if (!test_bit(DQ_READ_B, &dquot->dq_flags)) { - down_read(&dqopt->dqio_sem); + if (!test_bit(DQ_READ_B, &dquot->dq_flags)) ret = dqopt->ops[dquot->dq_id.type]->read_dqblk(dquot); - up_read(&dqopt->dqio_sem); - } if (ret < 0) goto out_iolock; /* Make sure flags update is visible after dquot has been filled */ diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c index 8fe79beced5c..d534c4043237 100644 --- a/fs/quota/quota_v1.c +++ b/fs/quota/quota_v1.c @@ -56,10 +56,12 @@ static int v1_read_dqblk(struct dquot *dquot) { int type = dquot->dq_id.type; struct v1_disk_dqblk dqblk; + struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); - if (!sb_dqopt(dquot->dq_sb)->files[type]) + if (!dqopt->files[type]) return -EINVAL; + down_read(&dqopt->dqio_sem); /* Set structure to 0s in case read fails/is after end of file */ memset(&dqblk, 0, sizeof(struct v1_disk_dqblk)); dquot->dq_sb->s_op->quota_read(dquot->dq_sb, type, (char *)&dqblk, @@ -73,6 +75,7 @@ static int v1_read_dqblk(struct dquot *dquot) dquot->dq_dqb.dqb_isoftlimit == 0) set_bit(DQ_FAKE_B, &dquot->dq_flags); dqstats_inc(DQST_READS); + up_read(&dqopt->dqio_sem); return 0; } diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c index ca71bf881ad1..b2cd34f6b3da 100644 --- a/fs/quota/quota_v2.c +++ b/fs/quota/quota_v2.c @@ -285,7 +285,15 @@ static int v2r1_is_id(void *dp, struct dquot *dquot) static int v2_read_dquot(struct dquot *dquot) { - return qtree_read_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); + struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); + int ret; + + down_read(&dqopt->dqio_sem); + ret = qtree_read_dquot( + sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, + dquot); + up_read(&dqopt->dqio_sem); + return ret; } static int v2_write_dquot(struct dquot *dquot) |