[PATCH 6.12.y 1/3] include/linux/fs.h: add inode_lock_killable()

From: Max Kellermann <[email protected]>

[ Upstream commit d8c5507cd140d9471472ece673e70250b957c595 ]

Prepare for making inode operations killable while they're waiting for
the lock.

Signed-off-by: Max Kellermann <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Christian Brauner <[email protected]>
Stable-dep-of: fa724e235cfd ("cifs: add fscache_resize_cookie() to cifs_setsize()")
Signed-off-by: Sasha Levin <[email protected]>
---
 include/linux/fs.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 466a76771b0a1..9d0968ed2344a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -815,6 +815,11 @@ static inline void inode_lock(struct inode *inode)
 	down_write(&inode->i_rwsem);
 }
 
+static inline __must_check int inode_lock_killable(struct inode *inode)
+{
+	return down_write_killable(&inode->i_rwsem);
+}
+
 static inline void inode_unlock(struct inode *inode)
 {
 	up_write(&inode->i_rwsem);
@@ -825,6 +830,11 @@ static inline void inode_lock_shared(struct inode *inode)
 	down_read(&inode->i_rwsem);
 }
 
+static inline __must_check int inode_lock_shared_killable(struct inode *inode)
+{
+	return down_read_killable(&inode->i_rwsem);
+}
+
 static inline void inode_unlock_shared(struct inode *inode)
 {
 	up_read(&inode->i_rwsem);
-- 
2.53.0