afs: Fix missing error handling in afs_write_end()

[ Upstream commit afae457d874860a7e299d334f59eede5f3ad4b47 ]

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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/afs/write.c b/fs/afs/write.c
index 106e43db11153fc1faed12ab326e25d4a9dc3c7d..926d4d68f7919b829989e5b254b2141d21058591 100644 (file)
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -282,7 +282,7 @@ 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);
        }
@@ -290,10 +290,12 @@ 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;
 }
 
 /*