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authorGustavo A. R. Silva <gustavoars@kernel.org>2020-07-25 14:00:20 +0200
committerJens Axboe <axboe@kernel.dk>2020-07-25 15:38:20 +0200
commit29f1d5caced9c2db96f169422bade787ff45d584 (patch)
tree6643613d2f2c57424832af77742b92bb480dd3a7 /drivers/md/bcache/writeback.c
parentbcache: movinggc: Use struct_size() helper in kzalloc() (diff)
downloadlinux-29f1d5caced9c2db96f169422bade787ff45d584.tar.xz
linux-29f1d5caced9c2db96f169422bade787ff45d584.zip
bcache: Use struct_size() in kzalloc()
Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/writeback.c')
-rw-r--r--drivers/md/bcache/writeback.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 71801c086b82..5397a2c5d6cc 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -459,10 +459,8 @@ static void read_dirty(struct cached_dev *dc)
for (i = 0; i < nk; i++) {
w = keys[i];
- io = kzalloc(sizeof(struct dirty_io) +
- sizeof(struct bio_vec) *
- DIV_ROUND_UP(KEY_SIZE(&w->key),
- PAGE_SECTORS),
+ io = kzalloc(struct_size(io, bio.bi_inline_vecs,
+ DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS)),
GFP_KERNEL);
if (!io)
goto err;