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Commit 66722f7c authored by David Sterba's avatar David Sterba
Browse files

btrfs: switch to kcalloc in btrfs_cmp_data_prepare 



Kcalloc is functionally equivalent and does overflow checks.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent fd95ef56

fs/btrfs/ioctl.c

+2 −2
Original line number Diff line number Diff line
@@ -2925,8 +2925,8 @@ static int btrfs_cmp_data_prepare(struct inode *src, u64 loff, 
	 * of the array is bounded by len, which is in turn bounded by

	 * BTRFS_MAX_DEDUPE_LEN.

	 */

	src_pgarr = kzalloc(num_pages * sizeof(struct page *), GFP_KERNEL);

	dst_pgarr = kzalloc(num_pages * sizeof(struct page *), GFP_KERNEL);

	src_pgarr = kcalloc(num_pages, sizeof(struct page *), GFP_KERNEL);

	dst_pgarr = kcalloc(num_pages, sizeof(struct page *), GFP_KERNEL);

	if (!src_pgarr || !dst_pgarr) {

		kfree(src_pgarr);

		kfree(dst_pgarr);