From: David Howells <dhowells@redhat.com>
Date: Thu, 7 May 2009 10:41:37 +0000 (+0100)
Subject: NOMMU: Don't check vm_region::vm_start is page aligned in add_nommu_region()
X-Git-Tag: firefly_0821_release~14215
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2.6.30-rc4-00336-g8c9ed89;p=firefly-linux-kernel-4.4.55.git

NOMMU: Don't check vm_region::vm_start is page aligned in add_nommu_region()

Don't check vm_region::vm_start is page aligned in add_nommu_region() because
the region may reflect some non-page-aligned mapped file, such as could be
obtained from RomFS XIP.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/nommu.c b/mm/nommu.c
index 67cd1a487ee6..b571ef707428 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -515,8 +515,6 @@ static void add_nommu_region(struct vm_region *region)
 
 	validate_nommu_regions();
 
-	BUG_ON(region->vm_start & ~PAGE_MASK);
-
 	parent = NULL;
 	p = &nommu_region_tree.rb_node;
 	while (*p) {