fs: add super_write_guard

brauner · brauner · commit 8e4d576ed3ff · 2025-11-05T22:52:15.000+01:00
Link: https://patch.msgid.link/20251104-work-guards-v1-1-5108ac78a171@kernel.org Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org>
diff --git a/include/linux/fs/super.h b/include/linux/fs/super.h
@@ -125,6 +125,11 @@ 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);

Original file line number	Diff line number	Diff line change
`@@ -125,6 +125,11 @@ static inline void sb_start_write(struct super_block *sb)`
`125`	`125`	`__sb_start_write(sb, SB_FREEZE_WRITE);`
`126`	`126`	`}`
`127`	`127`
	`128`	`+DEFINE_GUARD(super_write,`
	`129`	`+ struct super_block *,`
	`130`	`+ sb_start_write(_T),`
	`131`	`+ sb_end_write(_T))`
	`132`	`+`
`128`	`133`	`static inline bool sb_start_write_trylock(struct super_block *sb)`
`129`	`134`	`{`
`130`	`135`	`return __sb_start_write_trylock(sb, SB_FREEZE_WRITE);`