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-rw-r--r--fs/mount.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/mount.h b/fs/mount.h
index 97737051a8b9..ed8c83ba836a 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -154,6 +154,11 @@ static inline void get_mnt_ns(struct mnt_namespace *ns)
extern seqlock_t mount_lock;
+DEFINE_LOCK_GUARD_0(mount_writer, write_seqlock(&mount_lock),
+ write_sequnlock(&mount_lock))
+DEFINE_LOCK_GUARD_0(mount_locked_reader, read_seqlock_excl(&mount_lock),
+ read_sequnlock_excl(&mount_lock))
+
struct proc_mounts {
struct mnt_namespace *ns;
struct path root;