diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2023-05-29 15:11:01 +0200 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2023-06-14 00:25:43 +0200 |
| commit | 5ec6ca140a034682e421e2e808ef5ddfdfd65242 (patch) | |
| tree | e8a4f1e657acb12536ac988ca174d4896c3bcb30 | |
| parent | md/raid10: prevent soft lockup while flush writes (diff) | |
| download | linux-5ec6ca140a034682e421e2e808ef5ddfdfd65242.tar.xz linux-5ec6ca140a034682e421e2e808ef5ddfdfd65242.zip | |
md/raid1-10: factor out a helper to add bio to plug
The code in raid1 and raid10 is identical, prepare to limit the number
of plugged bios.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230529131106.2123367-3-yukuai1@huaweicloud.com
| -rw-r--r-- | drivers/md/raid1-10.c | 16 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 12 | ||||
| -rw-r--r-- | drivers/md/raid10.c | 11 |
3 files changed, 18 insertions, 21 deletions
diff --git a/drivers/md/raid1-10.c b/drivers/md/raid1-10.c index cd349e69ed77..76cff924b70b 100644 --- a/drivers/md/raid1-10.c +++ b/drivers/md/raid1-10.c @@ -110,3 +110,19 @@ static void md_bio_reset_resync_pages(struct bio *bio, struct resync_pages *rp, size -= len; } while (idx++ < RESYNC_PAGES && size > 0); } + +static inline bool raid1_add_bio_to_plug(struct mddev *mddev, struct bio *bio, + blk_plug_cb_fn unplug) +{ + struct raid1_plug_cb *plug = NULL; + struct blk_plug_cb *cb = blk_check_plugged(unplug, mddev, + sizeof(*plug)); + + if (!cb) + return false; + + plug = container_of(cb, struct raid1_plug_cb, cb); + bio_list_add(&plug->pending, bio); + + return true; +} diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 220f6ce761a5..92180f3a9f28 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1346,8 +1346,6 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, struct bitmap *bitmap = mddev->bitmap; unsigned long flags; struct md_rdev *blocked_rdev; - struct blk_plug_cb *cb; - struct raid1_plug_cb *plug = NULL; int first_clone; int max_sectors; bool write_behind = false; @@ -1576,15 +1574,7 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, r1_bio->sector); /* flush_pending_writes() needs access to the rdev so...*/ mbio->bi_bdev = (void *)rdev; - - cb = blk_check_plugged(raid1_unplug, mddev, sizeof(*plug)); - if (cb) - plug = container_of(cb, struct raid1_plug_cb, cb); - else - plug = NULL; - if (plug) { - bio_list_add(&plug->pending, mbio); - } else { + if (!raid1_add_bio_to_plug(mddev, mbio, raid1_unplug)) { spin_lock_irqsave(&conf->device_lock, flags); bio_list_add(&conf->pending_bio_list, mbio); spin_unlock_irqrestore(&conf->device_lock, flags); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 09017a43cea5..b8223da15ca9 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1295,8 +1295,6 @@ static void raid10_write_one_disk(struct mddev *mddev, struct r10bio *r10_bio, const blk_opf_t do_sync = bio->bi_opf & REQ_SYNC; const blk_opf_t do_fua = bio->bi_opf & REQ_FUA; unsigned long flags; - struct blk_plug_cb *cb; - struct raid1_plug_cb *plug = NULL; struct r10conf *conf = mddev->private; struct md_rdev *rdev; int devnum = r10_bio->devs[n_copy].devnum; @@ -1336,14 +1334,7 @@ static void raid10_write_one_disk(struct mddev *mddev, struct r10bio *r10_bio, atomic_inc(&r10_bio->remaining); - cb = blk_check_plugged(raid10_unplug, mddev, sizeof(*plug)); - if (cb) - plug = container_of(cb, struct raid1_plug_cb, cb); - else - plug = NULL; - if (plug) { - bio_list_add(&plug->pending, mbio); - } else { + if (!raid1_add_bio_to_plug(mddev, mbio, raid10_unplug)) { spin_lock_irqsave(&conf->device_lock, flags); bio_list_add(&conf->pending_bio_list, mbio); spin_unlock_irqrestore(&conf->device_lock, flags); |