[RESEND PATCH] f2fs: Use struct_size() to improve f2fs_acl_clone()

[RESEND PATCH] f2fs: Use struct_size() to improve f2fs_acl_clone()

[Thorsten Blum]

Use struct_size() to calculate the number of bytes to allocate for a
cloned acl.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 fs/f2fs/acl.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
index 8bffdeccdbc3..1fbc0607363b 100644
--- a/fs/f2fs/acl.c
+++ b/fs/f2fs/acl.c
@@ -296,9 +296,8 @@ static struct posix_acl *f2fs_acl_clone(const struct posix_acl *acl,
 	struct posix_acl *clone = NULL;
 
 	if (acl) {
-		int size = sizeof(struct posix_acl) + acl->a_count *
-				sizeof(struct posix_acl_entry);
-		clone = kmemdup(acl, size, flags);
+		clone = kmemdup(acl, struct_size(acl, a_entries, acl->a_count),
+				flags);
 		if (clone)
 			refcount_set(&clone->a_refcount, 1);
 	}
-- 
2.47.0

Re: [f2fs-dev] [RESEND PATCH] f2fs: Use struct_size() to improve f2fs_acl_clone()

[patchwork-bot+f2fs]

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Mon, 28 Oct 2024 12:20:58 +0100 you wrote:
> Use struct_size() to calculate the number of bytes to allocate for a
> cloned acl.
> 
> Reviewed-by: Chao Yu <chao@kernel.org>
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
> ---
>  fs/f2fs/acl.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)

Here is the summary with links:
  - [f2fs-dev,RESEND] f2fs: Use struct_size() to improve f2fs_acl_clone()
    https://git.kernel.org/jaegeuk/f2fs/c/527a4ded09b9

You are awesome, thank you!
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