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Date: Mon, 12 Sep 2016 20:42:18 +0200 From: SF Markus Elfring <elfring@...rs.sourceforge.net> To: ceph-devel@...r.kernel.org, Alex Elder <elder@...nel.org>, Ilya Dryomov <idryomov@...il.com>, Sage Weil <sage@...hat.com> Cc: LKML <linux-kernel@...r.kernel.org>, kernel-janitors@...r.kernel.org, Julia Lawall <julia.lawall@...6.fr> Subject: [PATCH 01/47] block-rbd: Use kmalloc_array() in rbd_header_from_disk() From: Markus Elfring <elfring@...rs.sourceforge.net> Date: Sun, 11 Sep 2016 12:21:25 +0200 * A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array". This issue was detected by using the Coccinelle software. * Delete the local variable "size" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net> --- drivers/block/rbd.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 35fc1da..e406c27 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -979,7 +979,6 @@ static int rbd_header_from_disk(struct rbd_device *rbd_dev, char *snap_names = NULL; u64 *snap_sizes = NULL; u32 snap_count; - size_t size; int ret = -ENOMEM; u32 i; @@ -1017,9 +1016,9 @@ static int rbd_header_from_disk(struct rbd_device *rbd_dev, goto out_err; /* ...as well as the array of their sizes. */ - - size = snap_count * sizeof (*header->snap_sizes); - snap_sizes = kmalloc(size, GFP_KERNEL); + snap_sizes = kmalloc_array(snap_count, + sizeof(*header->snap_sizes), + GFP_KERNEL); if (!snap_sizes) goto out_err; -- 2.10.0
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