afs: Fix missing error handling in afs_write_end()

afs_write_end() is missing page unlock and put if afs_fill_page() fails.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>

diff --git a/fs/afs/write.c b/fs/afs/write.c
index cb5f8a3df5773cba37c292e65ac6e985b0af11bc..9370e2feb999303098d36aab4234d9f2fef7f24a 100644 (file)
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -198,7 +198,7 @@ int afs_write_end(struct file *file, struct address_space *mapping,
                        ret = afs_fill_page(vnode, key, pos + copied,
                                            len - copied, page);
                        if (ret < 0)
-                               return ret;
+                               goto out;
                }
                SetPageUptodate(page);
        }
@@ -206,10 +206,12 @@ int afs_write_end(struct file *file, struct address_space *mapping,
        set_page_dirty(page);
        if (PageDirty(page))
                _debug("dirtied");
+       ret = copied;
+
+out:
        unlock_page(page);
        put_page(page);
-
-       return copied;
+       return ret;
 }
 
 /*