On 04/19/2018 05:48 PM, Shaohua Li wrote:
On Thu, Apr 12, 2018 at 11:54:28AM +0200, Mariusz Dabrowski wrote:
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@xxxxxxxxx>
Reviewed-by: Artur Paszkiewicz <artur.paszkiewicz@xxxxxxxxx>
Reviewed-by: Pawel Baldysiak <pawel.baldysiak@xxxxxxxxx>
---
drivers/md/raid5.c | 6 ++++++
drivers/md/raid5.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index be117d0a65a8..8705c1c5864f 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1139,6 +1139,9 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
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 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
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 = 0;
why not use RWF_WRITE_LIFE_NOT_SET here?
Sorry, I missed this one.
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