Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: saving negative to unsigned char
  9p: return on mutex_lock_interruptible()
  9p: Creating files with names too long should fail with ENAMETOOLONG.
  9p: Make sure we are able to clunk the cached fid on umount
  9p: drop nlink remove
  fs/9p: Clunk the fid resulting from partial walk of the name
  9p: documentation update
  9p: Fix setting of protocol flags in v9fs_session_info structure.

1 files changed, 18 insertions, 3 deletions

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index cb57d3326182..5c5bc8480070 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -242,7 +242,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
         list_add(&v9ses->slist, &v9fs_sessionlist);
         spin_unlock(&v9fs_sessionlist_lock);
 
-        v9ses->flags = V9FS_PROTO_2000U | V9FS_ACCESS_USER;
+        v9ses->flags = V9FS_ACCESS_USER;
         strcpy(v9ses->uname, V9FS_DEFUSER);
         strcpy(v9ses->aname, V9FS_DEFANAME);
         v9ses->uid = ~0;
@@ -263,8 +263,10 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
                 goto error;
         }
 
-        if (!p9_is_proto_dotu(v9ses->clnt))
-                v9ses->flags &= ~V9FS_PROTO_2000U;
+        if (p9_is_proto_dotl(v9ses->clnt))
+                v9ses->flags |= V9FS_PROTO_2000L;
+        else if (p9_is_proto_dotu(v9ses->clnt))
+                v9ses->flags |= V9FS_PROTO_2000U;
 
         v9ses->maxdata = v9ses->clnt->msize - P9_IOHDRSZ;
 
@@ -341,6 +343,19 @@ void v9fs_session_cancel(struct v9fs_session_info *v9ses) {
         p9_client_disconnect(v9ses->clnt);
 }
 
+/**
+ * v9fs_session_begin_cancel - Begin terminate of a session
+ * @v9ses: session to terminate
+ *
+ * After this call we don't allow any request other than clunk.
+ */
+
+void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses)
+{
+        P9_DPRINTK(P9_DEBUG_ERROR, "begin cancel session %p\n", v9ses);
+        p9_client_begin_disconnect(v9ses->clnt);
+}
+
 extern int v9fs_error_init(void);
 
 static struct kobject *v9fs_kobj;