linux-ext4 - [PATCH RFC 1/8] fs: add super_write

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Message-Id: <20251104-work-guards-v1-1-5108ac78a171@kernel.org>
Date: Tue, 04 Nov 2025 13:12:30 +0100
From: Christian Brauner <brauner@...nel.org>
To: linux-fsdevel@...r.kernel.org
Cc: Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, 
 linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org, 
 linux-xfs@...r.kernel.org, Christian Brauner <brauner@...nel.org>
Subject: [PATCH RFC 1/8] fs: add super_write_guard

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 include/linux/fs.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index c895146c1444..9d403c00fbf3 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2052,6 +2052,11 @@ static inline void sb_start_write(struct super_block *sb)
 	__sb_start_write(sb, SB_FREEZE_WRITE);
 }
 
+DEFINE_GUARD(super_write,
+	     struct super_block *,
+	     sb_start_write(_T),
+	     sb_end_write(_T))
+
 static inline bool sb_start_write_trylock(struct super_block *sb)
 {
 	return __sb_start_write_trylock(sb, SB_FREEZE_WRITE);

-- 
2.47.3