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authorKent Overstreet <koverstreet@google.com>2012-09-11 19:26:38 (GMT)
committerKent Overstreet <koverstreet@google.com>2013-03-23 21:15:35 (GMT)
commit2f6db2a7073452b123726e2baab1f37d511bf86d (patch)
tree3060d24489efc7b40f344dff157d1a5d55d671a9 /drivers/md/raid5.c
parent2aabaa65ad147bf8238a8a261b15a0c95e9e2afa (diff)
downloadlinux-2f6db2a7073452b123726e2baab1f37d511bf86d.tar.xz
raid5: use bio_reset()
Had to shuffle the code around a bit (where bi_rw and bi_end_io were set), but shouldn't really be anything tricky here Signed-off-by: Kent Overstreet <koverstreet@google.com> CC: Jens Axboe <axboe@kernel.dk> CC: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.c')
-rw-r--r--drivers/md/raid5.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 4e0f87e..7bbd285 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -567,14 +567,6 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
bi = &sh->dev[i].req;
rbi = &sh->dev[i].rreq; /* For writing to replacement */
- bi->bi_rw = rw;
- rbi->bi_rw = rw;
- if (rw & WRITE) {
- bi->bi_end_io = raid5_end_write_request;
- rbi->bi_end_io = raid5_end_write_request;
- } else
- bi->bi_end_io = raid5_end_read_request;
-
rcu_read_lock();
rrdev = rcu_dereference(conf->disks[i].replacement);
smp_mb(); /* Ensure that if rrdev is NULL, rdev won't be */
@@ -649,7 +641,14 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
set_bit(STRIPE_IO_STARTED, &sh->state);
+ bio_reset(bi);
bi->bi_bdev = rdev->bdev;
+ bi->bi_rw = rw;
+ bi->bi_end_io = (rw & WRITE)
+ ? raid5_end_write_request
+ : raid5_end_read_request;
+ bi->bi_private = sh;
+
pr_debug("%s: for %llu schedule op %ld on disc %d\n",
__func__, (unsigned long long)sh->sector,
bi->bi_rw, i);
@@ -663,12 +662,9 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
if (test_bit(R5_ReadNoMerge, &sh->dev[i].flags))
bi->bi_rw |= REQ_FLUSH;
- bi->bi_flags = 1 << BIO_UPTODATE;
- bi->bi_idx = 0;
bi->bi_io_vec[0].bv_len = STRIPE_SIZE;
bi->bi_io_vec[0].bv_offset = 0;
bi->bi_size = STRIPE_SIZE;
- bi->bi_next = NULL;
if (rrdev)
set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags);
trace_block_bio_remap(bdev_get_queue(bi->bi_bdev),
@@ -683,7 +679,13 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
set_bit(STRIPE_IO_STARTED, &sh->state);
+ bio_reset(rbi);
rbi->bi_bdev = rrdev->bdev;
+ rbi->bi_rw = rw;
+ BUG_ON(!(rw & WRITE));
+ rbi->bi_end_io = raid5_end_write_request;
+ rbi->bi_private = sh;
+
pr_debug("%s: for %llu schedule op %ld on "
"replacement disc %d\n",
__func__, (unsigned long long)sh->sector,
@@ -695,12 +697,9 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
else
rbi->bi_sector = (sh->sector
+ rrdev->data_offset);
- rbi->bi_flags = 1 << BIO_UPTODATE;
- rbi->bi_idx = 0;
rbi->bi_io_vec[0].bv_len = STRIPE_SIZE;
rbi->bi_io_vec[0].bv_offset = 0;
rbi->bi_size = STRIPE_SIZE;
- rbi->bi_next = NULL;
trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev),
rbi, disk_devt(conf->mddev->gendisk),
sh->dev[i].sector);