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-rw-r--r--drivers/md/bcache/writeback.h3
-rw-r--r--drivers/md/raid10.c2
-rw-r--r--drivers/md/raid5.c2
3 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/bcache/writeback.h b/drivers/md/bcache/writeback.h
index cdf8d253209e..6fb6dd600970 100644
--- a/drivers/md/bcache/writeback.h
+++ b/drivers/md/bcache/writeback.h
@@ -68,6 +68,9 @@ static inline bool should_writeback(struct cached_dev *dc, struct bio *bio,
in_use > CUTOFF_WRITEBACK_SYNC)
return false;
+ if (bio_op(bio) == REQ_OP_DISCARD)
+ return false;
+
if (dc->partial_stripes_expensive &&
bcache_dev_stripe_dirty(dc, bio->bi_iter.bi_sector,
bio_sectors(bio)))
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 53c22fbb09e7..14ee14428b10 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -3798,6 +3798,8 @@ static int raid10_run(struct mddev *mddev)
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"reshape");
+ if (!mddev->sync_thread)
+ goto out_free_conf;
}
return 0;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index d88f91235b7b..1a669f0abd49 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -6977,6 +6977,8 @@ static int raid5_run(struct mddev *mddev)
set_bit(MD_RECOVERY_RUNNING, &mddev->recovery);
mddev->sync_thread = md_register_thread(md_do_sync, mddev,
"reshape");
+ if (!mddev->sync_thread)
+ goto abort;
}
/* Ok, everything is just fine now */