3 files changed, 14 insertions, 10 deletions

diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index fd01d90cada5..57997fa14e69 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -51,4 +51,4 @@ int v9fs_dir_release(struct inode *inode, struct file *filp);
 int v9fs_file_open(struct inode *inode, struct file *file);
 void v9fs_inode2stat(struct inode *inode, struct p9_stat *stat);
 void v9fs_dentry_release(struct dentry *);
-int v9fs_uflags2omode(int uflags);
+int v9fs_uflags2omode(int uflags, int extended);
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 0d55affe37d4..52944d2249a4 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -59,7 +59,7 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 
         P9_DPRINTK(P9_DEBUG_VFS, "inode: %p file: %p \n", inode, file);
         v9ses = v9fs_inode2v9ses(inode);
-        omode = v9fs_uflags2omode(file->f_flags);
+        omode = v9fs_uflags2omode(file->f_flags, v9fs_extended(v9ses));
         fid = file->private_data;
         if (!fid) {
                 fid = v9fs_fid_clone(file->f_path.dentry);
@@ -75,6 +75,8 @@ int v9fs_file_open(struct inode *inode, struct file *file)
                         inode->i_size = 0;
                         inode->i_blocks = 0;
                 }
+                if ((file->f_flags & O_APPEND) && (!v9fs_extended(v9ses)))
+                        generic_file_llseek(file, 0, SEEK_END);
         }
 
         file->private_data = fid;
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 40fa807bd929..c95295c65045 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -132,10 +132,10 @@ static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode)
 /**
  * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits
  * @uflags: flags to convert
- *
+ * @extended: if .u extensions are active
  */
 
-int v9fs_uflags2omode(int uflags)
+int v9fs_uflags2omode(int uflags, int extended)
 {
         int ret;
 
@@ -155,14 +155,16 @@ int v9fs_uflags2omode(int uflags)
                 break;
         }
 
-        if (uflags & O_EXCL)
-                ret |= P9_OEXCL;
-
         if (uflags & O_TRUNC)
                 ret |= P9_OTRUNC;
 
-        if (uflags & O_APPEND)
-                ret |= P9_OAPPEND;
+        if (extended) {
+                if (uflags & O_EXCL)
+                        ret |= P9_OEXCL;
+
+                if (uflags & O_APPEND)
+                        ret |= P9_OAPPEND;
+        }
 
         return ret;
 }
@@ -506,7 +508,7 @@ v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode,
                 flags = O_RDWR;
 
         fid = v9fs_create(v9ses, dir, dentry, NULL, perm,
-                                                v9fs_uflags2omode(flags));
+                                v9fs_uflags2omode(flags, v9fs_extended(v9ses)));
         if (IS_ERR(fid)) {
                 err = PTR_ERR(fid);
                 fid = NULL;