From f03d9301f15fb69cdf1eb59d53c9fb72f68ecccc Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Wed, 4 Feb 2009 09:31:06 -0500
Subject: [PATCH] Btrfs: Don't try to compress pages past i_size

The compression code had some checks to make sure we were only
compressing bytes inside of i_size, but it wasn't catching every
case.  To make things worse, some incorrect math about the number
of bytes remaining would make it try to compress more pages than the
file really had.

The fix used here is to fall back to the non-compression code in this
case, which does all the proper cleanup of delalloc and other accounting.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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