btrfs: use kvzalloc() to allocate clone_roots in btrfs_ioctl_send()

btrfs_ioctl_send() used open-coded kvzalloc implementation earlier.
The code was accidentally replaced with kzalloc() call [1]. Restore
the original code by using kvzalloc() to allocate sctx->clone_roots.

[1] https://patchwork.kernel.org/patch/9757891/#20529627

Fixes: 818e010bf9d0 ("btrfs: replace opencoded kvzalloc with the helper")
CC: stable@vger.kernel.org # 4.14+
Signed-off-by: Denis Efremov <efremov@linux.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index ac0e942e8d7cc2ecaae31bf51f87148aabb638d4..79b7d15ca50f4ed2a4d5e8f0c7844f539cd75257 100644 (file)
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -7149,7 +7149,7 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
 
        alloc_size = sizeof(struct clone_root) * (arg->clone_sources_count + 1);
 
-       sctx->clone_roots = kzalloc(alloc_size, GFP_KERNEL);
+       sctx->clone_roots = kvzalloc(alloc_size, GFP_KERNEL);
        if (!sctx->clone_roots) {
                ret = -ENOMEM;
                goto out;