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-rw-r--r--drivers/md/bcache/writeback.h3
1 files changed, 3 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)))