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-rw-r--r--drivers/md/dm-log-writes.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index e549392e0ea5..0837b17e1798 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -699,7 +699,7 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
if (discard_bio)
alloc_size = sizeof(struct pending_block);
else
- alloc_size = sizeof(struct pending_block) + sizeof(struct bio_vec) * bio_segments(bio);
+ alloc_size = struct_size(block, vecs, bio_segments(bio));
block = kzalloc(alloc_size, GFP_NOIO);
if (!block) {