mnt: Honor MNT_LOCKED when detaching mounts

[firefly-linux-kernel-4.4.55.git] / fs / pnode.h

diff --git a/fs/pnode.h b/fs/pnode.h
index 0fcdbe7ca6480e7950092cfd0dc7d0ce431ef548..7114ce6e6b9ef038f415550b925ac50a95be978c 100644 (file)
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -20,6 +20,8 @@
 #define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
 #define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
 #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
+#define IS_MNT_LOCKED_AND_LAZY(m) \
+       (((m)->mnt.mnt_flags & (MNT_LOCKED|MNT_SYNC_UMOUNT)) == MNT_LOCKED)
 
 #define CL_EXPIRE              0x01
 #define CL_SLAVE               0x02