diff options
| author | Artur Paszkiewicz <artur.paszkiewicz@intel.com> | 2018-02-20 12:10:36 +0300 |
|---|---|---|
| committer | Shaohua Li <sh.li@alibaba-inc.com> | 2018-02-21 20:40:40 +0300 |
| commit | f4bc0c813e03bdb93f5300c3e06d7a0f07f65a74 (patch) | |
| tree | 2ea6fafb1c885f995140e16e052c4c8b83d3b2d0 /drivers/md | |
| parent | 01a69cab01c184d3786af09e9339311123d63d22 (diff) | |
| download | linux-f4bc0c813e03bdb93f5300c3e06d7a0f07f65a74.tar.xz | |
raid5-ppl: fix handling flush requests
Add missing bio completion. Without this any flush request would hang.
Fixes: 1532d9e87e8b ("raid5-ppl: PPL support for disks with write-back cache enabled")
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Shaohua Li <sh.li@alibaba-inc.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/raid5-log.h | 3 | ||||
| -rw-r--r-- | drivers/md/raid5-ppl.c | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/md/raid5-log.h b/drivers/md/raid5-log.h index 0c76bcedfc1c..a001808a2b77 100644 --- a/drivers/md/raid5-log.h +++ b/drivers/md/raid5-log.h @@ -44,6 +44,7 @@ extern void ppl_write_stripe_run(struct r5conf *conf); extern void ppl_stripe_write_finished(struct stripe_head *sh); extern int ppl_modify_log(struct r5conf *conf, struct md_rdev *rdev, bool add); extern void ppl_quiesce(struct r5conf *conf, int quiesce); +extern int ppl_handle_flush_request(struct r5l_log *log, struct bio *bio); static inline bool raid5_has_ppl(struct r5conf *conf) { @@ -104,7 +105,7 @@ static inline int log_handle_flush_request(struct r5conf *conf, struct bio *bio) if (conf->log) ret = r5l_handle_flush_request(conf->log, bio); else if (raid5_has_ppl(conf)) - ret = 0; + ret = ppl_handle_flush_request(conf->log, bio); return ret; } diff --git a/drivers/md/raid5-ppl.c b/drivers/md/raid5-ppl.c index 2764c2290062..42890a08375b 100644 --- a/drivers/md/raid5-ppl.c +++ b/drivers/md/raid5-ppl.c @@ -693,6 +693,16 @@ void ppl_quiesce(struct r5conf *conf, int quiesce) } } +int ppl_handle_flush_request(struct r5l_log *log, struct bio *bio) +{ + if (bio->bi_iter.bi_size == 0) { + bio_endio(bio); + return 0; + } + bio->bi_opf &= ~REQ_PREFLUSH; + return -EAGAIN; +} + void ppl_stripe_write_finished(struct stripe_head *sh) { struct ppl_io_unit *io; |