aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/md/raid0.c82
-rw-r--r--drivers/md/raid1.c18
2 files changed, 51 insertions, 49 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 4106d943aae7..c50a7abda744 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -545,54 +545,20 @@ static void raid0_handle_discard(struct mddev *mddev, struct bio *bio)
bio_endio(bio);
}
-static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
+static void raid0_map_submit_bio(struct mddev *mddev, struct bio *bio)
{
struct r0conf *conf = mddev->private;
struct strip_zone *zone;
struct md_rdev *tmp_dev;
- sector_t bio_sector;
- sector_t sector;
- sector_t orig_sector;
- unsigned chunk_sects;
- unsigned sectors;
-
- if (unlikely(bio->bi_opf & REQ_PREFLUSH)
- && md_flush_request(mddev, bio))
- return true;
+ sector_t bio_sector = bio->bi_iter.bi_sector;
+ sector_t sector = bio_sector;
- if (unlikely((bio_op(bio) == REQ_OP_DISCARD))) {
- raid0_handle_discard(mddev, bio);
- return true;
- }
+ md_account_bio(mddev, &bio);
- bio_sector = bio->bi_iter.bi_sector;
- sector = bio_sector;
- chunk_sects = mddev->chunk_sectors;
-
- sectors = chunk_sects -
- (likely(is_power_of_2(chunk_sects))
- ? (sector & (chunk_sects-1))
- : sector_div(sector, chunk_sects));
-
- /* Restore due to sector_div */
- sector = bio_sector;
-
- if (sectors < bio_sectors(bio)) {
- struct bio *split = bio_split(bio, sectors, GFP_NOIO,
- &mddev->bio_set);
- bio_chain(split, bio);
- submit_bio_noacct(bio);
- bio = split;
- }
-
- if (bio->bi_pool != &mddev->bio_set)
- md_account_bio(mddev, &bio);
-
- orig_sector = sector;
zone = find_zone(mddev->private, &sector);
switch (conf->layout) {
case RAID0_ORIG_LAYOUT:
- tmp_dev = map_sector(mddev, zone, orig_sector, &sector);
+ tmp_dev = map_sector(mddev, zone, bio_sector, &sector);
break;
case RAID0_ALT_MULTIZONE_LAYOUT:
tmp_dev = map_sector(mddev, zone, sector, &sector);
@@ -600,13 +566,13 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
default:
WARN(1, "md/raid0:%s: Invalid layout\n", mdname(mddev));
bio_io_error(bio);
- return true;
+ return;
}
if (unlikely(is_rdev_broken(tmp_dev))) {
bio_io_error(bio);
md_error(mddev, tmp_dev);
- return true;
+ return;
}
bio_set_dev(bio, tmp_dev->bdev);
@@ -618,6 +584,40 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
bio_sector);
mddev_check_write_zeroes(mddev, bio);
submit_bio_noacct(bio);
+}
+
+static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
+{
+ sector_t sector;
+ unsigned chunk_sects;
+ unsigned sectors;
+
+ if (unlikely(bio->bi_opf & REQ_PREFLUSH)
+ && md_flush_request(mddev, bio))
+ return true;
+
+ if (unlikely((bio_op(bio) == REQ_OP_DISCARD))) {
+ raid0_handle_discard(mddev, bio);
+ return true;
+ }
+
+ sector = bio->bi_iter.bi_sector;
+ chunk_sects = mddev->chunk_sectors;
+
+ sectors = chunk_sects -
+ (likely(is_power_of_2(chunk_sects))
+ ? (sector & (chunk_sects-1))
+ : sector_div(sector, chunk_sects));
+
+ if (sectors < bio_sectors(bio)) {
+ struct bio *split = bio_split(bio, sectors, GFP_NOIO,
+ &mddev->bio_set);
+ bio_chain(split, bio);
+ raid0_map_submit_bio(mddev, bio);
+ bio = split;
+ }
+
+ raid0_map_submit_bio(mddev, bio);
return true;
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index c18b7c096c8d..4b30a1742162 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -311,6 +311,7 @@ static void raid_end_bio_io(struct r1bio *r1_bio)
{
struct bio *bio = r1_bio->master_bio;
struct r1conf *conf = r1_bio->mddev->private;
+ sector_t sector = r1_bio->sector;
/* if nobody has done the final endio yet, do it now */
if (!test_and_set_bit(R1BIO_Returned, &r1_bio->state)) {
@@ -321,13 +322,13 @@ static void raid_end_bio_io(struct r1bio *r1_bio)
call_bio_endio(r1_bio);
}
+
+ free_r1bio(r1_bio);
/*
* Wake up any possible resync thread that waits for the device
* to go idle. All I/Os, even write-behind writes, are done.
*/
- allow_barrier(conf, r1_bio->sector);
-
- free_r1bio(r1_bio);
+ allow_barrier(conf, sector);
}
/*
@@ -1377,6 +1378,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
return;
}
+ retry_write:
r1_bio = alloc_r1bio(mddev, bio);
r1_bio->sectors = max_write_sectors;
@@ -1392,7 +1394,6 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
*/
disks = conf->raid_disks * 2;
- retry_write:
blocked_rdev = NULL;
rcu_read_lock();
max_sectors = r1_bio->sectors;
@@ -1472,7 +1473,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
for (j = 0; j < i; j++)
if (r1_bio->bios[j])
rdev_dec_pending(conf->mirrors[j].rdev, mddev);
- r1_bio->state = 0;
+ free_r1bio(r1_bio);
allow_barrier(conf, bio->bi_iter.bi_sector);
if (bio->bi_opf & REQ_NOWAIT) {
@@ -1522,8 +1523,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio,
* Not if there are too many, or cannot
* allocate memory, or a reader on WriteMostly
* is waiting for behind writes to flush */
- if (bitmap &&
- test_bit(WriteMostly, &rdev->flags) &&
+ if (bitmap && write_behind &&
(atomic_read(&bitmap->behind_writes)
< mddev->bitmap_info.max_write_behind) &&
!waitqueue_active(&bitmap->behind_wait)) {
@@ -2510,6 +2510,7 @@ static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio)
struct mddev *mddev = conf->mddev;
struct bio *bio;
struct md_rdev *rdev;
+ sector_t sector;
clear_bit(R1BIO_ReadError, &r1_bio->state);
/* we got a read error. Maybe the drive is bad. Maybe just
@@ -2539,12 +2540,13 @@ static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio)
}
rdev_dec_pending(rdev, conf->mddev);
- allow_barrier(conf, r1_bio->sector);
+ sector = r1_bio->sector;
bio = r1_bio->master_bio;
/* Reuse the old r1_bio so that the IO_BLOCKED settings are preserved */
r1_bio->state = 0;
raid1_read_request(mddev, bio, r1_bio->sectors, r1_bio);
+ allow_barrier(conf, sector);
}
static void raid1d(struct md_thread *thread)
Powered by cgit, Gruvboxed by Blaster4385.