diff options
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index de8419b7ae98..98bac4f304ae 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8582,6 +8582,26 @@ void md_write_end(struct mddev *mddev) EXPORT_SYMBOL(md_write_end); +/* This is used by raid0 and raid10 */ +void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev, + struct bio *bio, sector_t start, sector_t size) +{ + struct bio *discard_bio = NULL; + + if (__blkdev_issue_discard(rdev->bdev, start, size, + GFP_NOIO, 0, &discard_bio) || !discard_bio) + return; + + bio_chain(discard_bio, bio); + bio_clone_blkg_association(discard_bio, bio); + if (mddev->gendisk) + trace_block_bio_remap(bdev_get_queue(rdev->bdev), + discard_bio, disk_devt(mddev->gendisk), + bio->bi_iter.bi_sector); + submit_bio_noacct(discard_bio); +} +EXPORT_SYMBOL(md_submit_discard_bio); + /* md_allow_write(mddev) * Calling this ensures that the array is marked 'active' so that writes * may proceed without blocking. It is important to call this before @@ -9544,7 +9564,7 @@ static int __init md_init(void) goto err_misc_wq; md_rdev_misc_wq = alloc_workqueue("md_rdev_misc", 0, 0); - if (!md_misc_wq) + if (!md_rdev_misc_wq) goto err_rdev_misc_wq; if ((ret = register_blkdev(MD_MAJOR, "md")) < 0) |