From: Andrew Dahl <adahl@sgi.com>
Date: Wed, 14 Nov 2012 18:52:26 +0000 (-0600)
Subject: xfs: reverse the check on XFS_IOC_ZERO_RANGE
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=d6638ae244f6323fcdf85e72eb4a5af6f6212893;p=deliverable%2Flinux.git

xfs: reverse the check on XFS_IOC_ZERO_RANGE

Reversing the check on XFS_IOC_ZERO_RANGE.

Range should be zeroed if the start is less than or equal to the end.

Signed-off-by: Andrew Dahl <adahl@sgi.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
---

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index de3702a57e55..46a7a5de5d6d 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -2188,7 +2188,7 @@ xfs_change_file_space(
 	case XFS_IOC_ZERO_RANGE:
 		prealloc_type |= XFS_BMAPI_CONVERT;
 		end = round_down(startoffset + bf->l_len, PAGE_SIZE) - 1;
-		if (startoffset > end)
+		if (startoffset <= end)
 			truncate_pagecache_range(VFS_I(ip), startoffset, end);
 		/* FALLTHRU */
 	case XFS_IOC_RESVSP: