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Message-ID: <20241017220502.1592-2-thorsten.blum@linux.dev>
Date: Fri, 18 Oct 2024 00:05:03 +0200
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Jaegeuk Kim <jaegeuk@...nel.org>,
Chao Yu <chao@...nel.org>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org
Subject: [RESEND PATCH] f2fs: Use struct_size() to improve f2fs_acl_clone()
Use struct_size() to calculate the number of bytes to allocate for a
cloned acl.
Reviewed-by: Chao Yu <chao@...nel.org>
Signed-off-by: Thorsten Blum <thorsten.blum@...ux.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
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