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-rw-r--r--include/linux/fs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7f8d96d68f34..5cbeab8a63ca 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -748,6 +748,11 @@ static inline void inode_lock_nested(struct inode *inode, unsigned subclass)
down_write_nested(&inode->i_rwsem, subclass);
}
+static inline void inode_lock_shared_nested(struct inode *inode, unsigned subclass)
+{
+ down_read_nested(&inode->i_rwsem, subclass);
+}
+
void lock_two_nondirectories(struct inode *, struct inode*);
void unlock_two_nondirectories(struct inode *, struct inode*);