From: Eric Sandeen <sandeen@sgi.com>
Date: Tue, 28 Feb 2006 01:30:30 +0000 (+1100)
Subject: [XFS] Don't map non-uptodate buffers in xfs_probe_cluster; also fixes
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2353e8e9b6ae29aad77935f21735a30f5cc419b4;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[XFS] Don't map non-uptodate buffers in xfs_probe_cluster; also fixes
obscure corruption case

SGI-PV: 942658
SGI-Modid: xfs-linux-melb:xfs-kern:207119a

Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
---

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 8f2beec526c..74d8be87f98 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -540,7 +540,7 @@ xfs_probe_cluster(
 
 	/* First sum forwards in this page */
 	do {
-		if (mapped != buffer_mapped(bh))
+		if (!buffer_uptodate(bh) || (mapped != buffer_mapped(bh)))
 			return total;
 		total += bh->b_size;
 	} while ((bh = bh->b_this_page) != head);