NFS: Flesh out nfs_invalidate_page()

In the case of a call to truncate_inode_pages(), we should really try to
cancel any pending writes on the page.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 1b524b9f982a..fc48135621ed 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -61,6 +61,7 @@
 #define FLUSH_LOWPRI            8       /* low priority background flush */
 #define FLUSH_HIGHPRI           16      /* high priority memory reclaim flush */
 #define FLUSH_NOCOMMIT          32      /* Don't send the NFSv3/v4 COMMIT */
+#define FLUSH_INVALIDATE        64      /* Invalidate the page cache */
 
 #ifdef __KERNEL__