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, 5 insertions, 1 deletions

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 63154070145..106ef0dec04 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -303,7 +303,11 @@ static int nfs_commit_write(struct file *file, struct page *page, unsigned offse
 
 static void nfs_invalidate_page(struct page *page, unsigned long offset)
 {
-        /* FIXME: we really should cancel any unstarted writes on this page */
+        struct inode *inode = page->mapping->host;
+
+        /* Cancel any unstarted writes on this page */
+        if (offset == 0)
+                nfs_sync_inode_wait(inode, page->index, 1, FLUSH_INVALIDATE);
 }
 
 static int nfs_release_page(struct page *page, gfp_t gfp)