afs: Invalidate cache on server data change

Invalidate any data stored in fscache for a vnode that changes on the
server so that we don't end up with the cache in a bad state locally.

Signed-off-by: David Howells <dhowells@redhat.com>

diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 6b39d02..42f83fd 100644 (file)
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -343,6 +343,10 @@ void afs_zap_data(struct afs_vnode *vnode)
 {
        _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
 
+#ifdef CONFIG_AFS_FSCACHE
+       fscache_invalidate(vnode->cache);
+#endif
+
        /* nuke all the non-dirty pages that aren't locked, mapped or being
         * written back in a regular file and completely discard the pages in a
         * directory or symlink */