Patch "nfs_write_end(): fix handling of short copies" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

nfs_write_end(): fix handling of short copies

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
nfs_write_end-fix-handling-of-short-copies.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Al Viro <[email protected]>
Date: Mon, 5 Sep 2016 21:42:32 -0400
Subject: nfs_write_end(): fix handling of short copies

From: Al Viro <[email protected]>

commit c0cf3ef5e0f47e385920450b245d22bead93e7ad upstream.

What matters when deciding if we should make a page uptodate is not how much we _wanted_ to copy, but how much we actually have copied. As it is, on architectures that do not zero tail on short copy we can leave uninitialized data in page marked uptodate.

---
 fs/nfs/file.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -407,7 +407,7 @@ static int nfs_write_end(struct file *fi
 	 */
 	if (!PageUptodate(page)) {
 		unsigned pglen = nfs_page_length(page);
-		unsigned end = offset + len;
+		unsigned end = offset + copied;
 
 		if (pglen == 0) {
 			zero_user_segments(page, 0, offset,

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/sg_write-bsg_write-is-not-fit-to-be-called-under-kernel_ds.patch queue-4.4/nfs_write_end-fix-handling-of-short-copies.patch