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btrfs: fix kvcalloc() arguments order in btrfs_ioctl_send()

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commit 6ff09b6b8c2fb6b3edda4ffaa173153a40653067 upstream.

When compiling with gcc version 14.0.0 20231220 (experimental)
and W=1, I've noticed the following warning:

fs/btrfs/send.c: In function 'btrfs_ioctl_send':
fs/btrfs/send.c:8208:44: warning: 'kvcalloc' sizes specified with 'sizeof'
in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
 8208 |         sctx->clone_roots = kvcalloc(sizeof(*sctx->clone_roots),
      |                                            ^

Since 'n' and 'size' arguments of 'kvcalloc()' are multiplied to
calculate the final size, their actual order doesn't affect the result
and so this is not a bug. But it's still worth to fix it.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Antipov
2023-12-21 11:47:45 +03:00
committed by Greg Kroah-Hartman
parent 3284447d66
commit a2fb0eefa4
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/send.c
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@@ -7339,8 +7339,8 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
sctx->waiting_dir_moves = RB_ROOT;
sctx->orphan_dirs = RB_ROOT;
sctx->clone_roots = kvcalloc(sizeof(*sctx->clone_roots),
arg->clone_sources_count + 1,
sctx->clone_roots = kvcalloc(arg->clone_sources_count + 1,
sizeof(*sctx->clone_roots),
GFP_KERNEL);
if (!sctx->clone_roots) {
ret = -ENOMEM;