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path: root/drivers/md/dm.c
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Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 9ede55278eec..2b75f1ef7386 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -594,6 +594,7 @@ static struct dm_io *alloc_io(struct mapped_device *md, struct bio *bio)
atomic_set(&io->io_count, 2);
this_cpu_inc(*md->pending_io);
io->orig_bio = bio;
+ io->split_bio = NULL;
io->md = md;
spin_lock_init(&io->lock);
io->start_time = jiffies;
@@ -887,7 +888,7 @@ static void dm_io_complete(struct dm_io *io)
{
blk_status_t io_error;
struct mapped_device *md = io->md;
- struct bio *bio = io->orig_bio;
+ struct bio *bio = io->split_bio ? io->split_bio : io->orig_bio;
if (io->status == BLK_STS_DM_REQUEUE) {
unsigned long flags;
@@ -1693,9 +1694,11 @@ static void dm_split_and_process_bio(struct mapped_device *md,
* Remainder must be passed to submit_bio_noacct() so it gets handled
* *after* bios already submitted have been completely processed.
*/
- bio_trim(bio, io->sectors, ci.sector_count);
- trace_block_split(bio, bio->bi_iter.bi_sector);
- bio_inc_remaining(bio);
+ WARN_ON_ONCE(!dm_io_flagged(io, DM_IO_WAS_SPLIT));
+ io->split_bio = bio_split(bio, io->sectors, GFP_NOIO,
+ &md->queue->bio_split);
+ bio_chain(io->split_bio, bio);
+ trace_block_split(io->split_bio, bio->bi_iter.bi_sector);
submit_bio_noacct(bio);
out:
/*