diff options
| author | Mariusz Dabrowski | 2018-04-19 19:28:10 +0200 |
|---|---|---|
| committer | Shaohua Li | 2018-05-17 09:55:58 -0700 |
| commit | 2cd259a77de561d49c1ff939a239095749e65ee7 (patch) | |
| tree | 3fb372748632aec21432406e063f21e5c7e4cca3 /drivers/md | |
| parent | 011abdc9df559ec75779bb7c53a744c69b2a94c6 (diff) | |
raid5: copy write hint from origin bio to stripe
Store write hint from original bio in stripe head so it can be assigned
to bio sent to each RAID device.
Signed-off-by: Mariusz Dabrowski <mariusz.dabrowski@intel.com>
Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Reviewed-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/raid5.c | 6 | ||||
| -rw-r--r-- | drivers/md/raid5.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index be117d0a65a8..1e1515c817ff 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1139,6 +1139,9 @@ again: bi->bi_io_vec[0].bv_len = STRIPE_SIZE; bi->bi_io_vec[0].bv_offset = 0; bi->bi_iter.bi_size = STRIPE_SIZE; + bi->bi_write_hint = sh->dev[i].write_hint; + if (!rrdev) + sh->dev[i].write_hint = RWF_WRITE_LIFE_NOT_SET; /* * If this is discard request, set bi_vcnt 0. We don't * want to confuse SCSI because SCSI will replace payload @@ -1190,6 +1193,8 @@ again: rbi->bi_io_vec[0].bv_len = STRIPE_SIZE; rbi->bi_io_vec[0].bv_offset = 0; rbi->bi_iter.bi_size = STRIPE_SIZE; + rbi->bi_write_hint = sh->dev[i].write_hint; + sh->dev[i].write_hint = RWF_WRITE_LIFE_NOT_SET; /* * If this is discard request, set bi_vcnt 0. We don't * want to confuse SCSI because SCSI will replace payload @@ -3204,6 +3209,7 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, (unsigned long long)sh->sector); spin_lock_irq(&sh->stripe_lock); + sh->dev[dd_idx].write_hint = bi->bi_write_hint; /* Don't allow new IO added to stripes in batch list */ if (sh->batch_head) goto overlap; diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index 3f8da26032ac..aea2447b0ea7 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -257,6 +257,7 @@ struct stripe_head { sector_t sector; /* sector of this page */ unsigned long flags; u32 log_checksum; + unsigned short write_hint; } dev[1]; /* allocated with extra space depending of RAID geometry */ }; |