[SRU][N][PATCH 2/2] f2fs: Add inline to f2fs_build_fault_attr() stub

[Massimiliano Pellizzer]

From: Nathan Chancellor <nathan at kernel.org>

commit 0d8968287a1cf7b03d07387dc871de3861b9f6b9 upstream.

When building without CONFIG_F2FS_FAULT_INJECTION, there is a warning
from each file that includes f2fs.h because the stub for
f2fs_build_fault_attr() is missing inline:

  In file included from fs/f2fs/segment.c:21:
  fs/f2fs/f2fs.h:4605:12: warning: 'f2fs_build_fault_attr' defined but not used [-Wunused-function]
   4605 | static int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
        |            ^~~~~~~~~~~~~~~~~~~~~

Add the missing inline to resolve all of the warnings for this
configuration.

Fixes: 4ed886b187f4 ("f2fs: check validation of fault attrs in f2fs_build_fault_attr()")
Signed-off-by: Nathan Chancellor <nathan at kernel.org>
Reviewed-by: Chao Yu <chao at kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk at kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
(cherry picked from commit 72d0e1dec7914b36beb4f3c7fe3a4c01cbb018ee linux-6.9.y)
CVE-2024-42160
Signed-off-by: Massimiliano Pellizzer <massimiliano.pellizzer at canonical.com>
---
 fs/f2fs/f2fs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ec544ab5307d..93303ad29271 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -4606,8 +4606,8 @@ static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx)
 extern int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
 							unsigned long type);
 #else
-static int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
-							unsigned long type)
+static inline int f2fs_build_fault_attr(struct f2fs_sb_info *sbi,
+					unsigned long rate, unsigned long type)
 {
 	return 0;
 }
-- 
2.43.0