Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 12 insertions, 3 deletions

diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index 14d944204571..7317b39b2815 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -24,6 +24,7 @@
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
+#include <linux/slab.h>
 #include <linux/sched.h>
 #include <linux/idr.h>
 #include <net/9p/9p.h>
@@ -110,7 +111,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
 {
         int i, n, l, clone, any, access;
         u32 uid;
-        struct p9_fid *fid;
+        struct p9_fid *fid, *old_fid = NULL;
         struct dentry *d, *ds;
         struct v9fs_session_info *v9ses;
         char **wnames, *uname;
@@ -151,7 +152,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
                         if (access == V9FS_ACCESS_SINGLE)
                                 return ERR_PTR(-EPERM);
 
-                        if (v9fs_extended(v9ses))
+                        if (v9fs_proto_dotu(v9ses))
                                 uname = NULL;
                         else
                                 uname = v9ses->uname;
@@ -183,10 +184,18 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
                 l = min(n - i, P9_MAXWELEM);
                 fid = p9_client_walk(fid, l, &wnames[i], clone);
                 if (IS_ERR(fid)) {
+                        if (old_fid) {
+                                /*
+                                 * If we fail, clunk fid which are mapping
+                                 * to path component and not the last component
+                                 * of the path.
+                                 */
+                                p9_client_clunk(old_fid);
+                        }
                         kfree(wnames);
                         return fid;
                 }
-
+                old_fid = fid;
                 i += l;
                 clone = 0;
         }