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, 2 insertions, 0 deletions

diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 909711f57c0d..0adfd64dfcee 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -131,6 +131,8 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
         rdir = (struct p9_rdir *) fid->rdir;
 
         err = mutex_lock_interruptible(&rdir->mutex);
+        if (err)
+                return err;
         while (err == 0) {
                 if (rdir->tail == rdir->head) {
                         err = v9fs_file_readn(filp, rdir->buf, NULL,