FS-Cache: Bit waiting helpers

Add helpers for use with wait_on_bit().

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Daire Byrne <Daire.Byrne@framestore.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index 4c6ba561e966..16389942a54e 100644
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -82,6 +82,9 @@ extern unsigned fscache_defer_create;
 extern unsigned fscache_debug;
 extern struct kobject *fscache_root;
 
+extern int fscache_wait_bit(void *);
+extern int fscache_wait_bit_interruptible(void *);
+
 /*
  * fsc-proc.c
  */