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: Skip check for mandatory locks when unlocking
  9p: Fixes a simple bug enabling writes beyond 2GB.
  9p: Change the name of new protocol from 9p2010.L to 9p2000.L
  fs/9p: re-init the wstat in readdir loop
  net/9p: Add sysfs mount_tag file for virtio 9P device
  net/9p: Use the tag name in the config space for identifying mount point

3 files changed, 15 insertions, 6 deletions

diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index 79000bf6249..6b801d1ddf4 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -24,7 +24,7 @@
 /**
  * enum p9_session_flags - option flags for each 9P session
  * @V9FS_PROTO_2000U: whether or not to use 9P2000.u extensions
- * @V9FS_PROTO_2010L: whether or not to use 9P2010.l extensions
+ * @V9FS_PROTO_2000L: whether or not to use 9P2000.l extensions
  * @V9FS_ACCESS_SINGLE: only the mounting user can access the hierarchy
  * @V9FS_ACCESS_USER: a new attach will be issued for every user (default)
  * @V9FS_ACCESS_ANY: use a single attach for all users
@@ -34,7 +34,7 @@
  */
 enum p9_session_flags {
         V9FS_PROTO_2000U        = 0x01,
-        V9FS_PROTO_2010L        = 0x02,
+        V9FS_PROTO_2000L        = 0x02,
         V9FS_ACCESS_SINGLE      = 0x04,
         V9FS_ACCESS_USER        = 0x08,
         V9FS_ACCESS_ANY         = 0x0C,
@@ -130,5 +130,5 @@ static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses)
 
 static inline int v9fs_proto_dotl(struct v9fs_session_info *v9ses)
 {
-        return v9ses->flags & V9FS_PROTO_2010L;
+        return v9ses->flags & V9FS_PROTO_2000L;
 }
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 6580aa44954..d8a3afe4ff7 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -76,6 +76,15 @@ static inline int dt_type(struct p9_wstat *mistat)
         return rettype;
 }
 
+static void p9stat_init(struct p9_wstat *stbuf)
+{
+        stbuf->name  = NULL;
+        stbuf->uid   = NULL;
+        stbuf->gid   = NULL;
+        stbuf->muid  = NULL;
+        stbuf->extension = NULL;
+}
+
 /**
  * v9fs_dir_readdir - read a directory
  * @filp: opened file structure
@@ -131,8 +140,8 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir)
                         rdir->head = 0;
                         rdir->tail = err;
                 }
-
                 while (rdir->head < rdir->tail) {
+                        p9stat_init(&st);
                         err = p9stat_read(rdir->buf + rdir->head,
                                                 buflen - rdir->head, &st,
                                                 fid->clnt->proto_version);
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 36122683fae..df52d488d2a 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -114,7 +114,7 @@ static int v9fs_file_lock(struct file *filp, int cmd, struct file_lock *fl)
         P9_DPRINTK(P9_DEBUG_VFS, "filp: %p lock: %p\n", filp, fl);
 
         /* No mandatory locks */
-        if (__mandatory_lock(inode))
+        if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK)
                 return -ENOLCK;
 
         if ((IS_SETLK(cmd) || IS_SETLKW(cmd)) && fl->fl_type != F_UNLCK) {
@@ -215,7 +215,7 @@ v9fs_file_write(struct file *filp, const char __user * data,
         struct p9_fid *fid;
         struct p9_client *clnt;
         struct inode *inode = filp->f_path.dentry->d_inode;
-        int origin = *offset;
+        loff_t origin = *offset;
         unsigned long pg_start, pg_end;
 
         P9_DPRINTK(P9_DEBUG_VFS, "data %p count %d offset %x\n", data,