Needed by ext4 to test frozen fs before updating s_last_mounted.
Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
---
include/linux/fs.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 760d8da1b6c7..cac41f1bad05 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1597,6 +1597,11 @@ static inline void sb_start_intwrite(struct super_block *sb)
__sb_start_write(sb, SB_FREEZE_FS, true);
}
+static inline int sb_start_intwrite_trylock(struct super_block *sb)
+{
+ return __sb_start_write(sb, SB_FREEZE_FS, false);
+}
+
extern bool inode_owner_or_capable(const struct inode *inode);
--
2.7.4
