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-rw-r--r--block/blk-merge.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 208658a901c6..e7696c47489a 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -90,7 +90,8 @@ static struct bio *blk_bio_discard_split(struct request_queue *q,
/* Zero-sector (unknown) and one-sector granularities are the same. */
granularity = max(q->limits.discard_granularity >> 9, 1U);
- max_discard_sectors = min(q->limits.max_discard_sectors, UINT_MAX >> 9);
+ max_discard_sectors = min(q->limits.max_discard_sectors,
+ bio_allowed_max_sectors(q));
max_discard_sectors -= max_discard_sectors % granularity;
if (unlikely(!max_discard_sectors)) {