Patch "xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()" has been added to the 4.9-stable tree

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

xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()

to the 4.9-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:
xfs-fix-off-by-in-in-loop-termination-in-xfs_find_get_desired_pgoff.patch
and it can be found in the queue-4.9 subdirectory.

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

From: Jan Kara <[email protected]>
Date: Thu, 18 May 2017 16:36:23 -0700
Subject: xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()

From: Jan Kara <[email protected]>

commit d7fd24257aa60316bf81093f7f909dc9475ae974 upstream.

There is an off-by-one error in loop termination conditions in xfs_find_get_desired_pgoff() since 'end' may index a page beyond end of desired range if 'endoff' is page aligned. It doesn't have any visible effects but still it is good to fix it.

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

@@ -1130,7 +1130,7 @@ xfs_find_get_desired_pgoff(
 
 	index = startoff >> PAGE_SHIFT;
 	endoff = XFS_FSB_TO_B(mp, map->br_startoff + map->br_blockcount);
-	end = endoff >> PAGE_SHIFT;
+	end = (endoff - 1) >> PAGE_SHIFT;
 	do {
 		int		want;
 		unsigned	nr_pages;

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

queue-4.9/xfs-fix-missed-holes-in-seek_hole-implementation.patch queue-4.9/xfs-fix-off-by-one-on-max-nr_pages-in-xfs_find_get_desired_pgoff.patch queue-4.9/xfs-fix-off-by-in-in-loop-termination-in-xfs_find_get_desired_pgoff.patch