[PATCH] block/bio-integrity: use struct_size() in kmalloc()

[Jackie Liu]

Use the new struct_size() helper to keep code simple.

Signed-off-by: Jackie Liu <liuyu...@kylinos.cn>
---
 block/bio-integrity.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/bio-integrity.c b/block/bio-integrity.c
index 1b633a3526d4..5152009b5b59 100644
--- a/block/bio-integrity.c
+++ b/block/bio-integrity.c
@@ -57,8 +57,7 @@ struct bio_integrity_payload *bio_integrity_alloc(struct bio 
*bio,
        unsigned inline_vecs;
 
        if (!bs || !mempool_initialized(&bs->bio_integrity_pool)) {
-               bip = kmalloc(sizeof(struct bio_integrity_payload) +
-                             sizeof(struct bio_vec) * nr_vecs, gfp_mask);
+               bip = kmalloc(struct_size(bip, bip_inline_vecs, nr_vecs), 
gfp_mask);
                inline_vecs = nr_vecs;
        } else {
                bip = mempool_alloc(&bs->bio_integrity_pool, gfp_mask);
-- 
2.21.0