linux-kernel - [PATCH] 2.6.28, vmalloc.c, vmap_page

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Message-ID: <20081225210235.GC5431@os.inf.tu-dresden.de>
Date:	Thu, 25 Dec 2008 22:02:35 +0100
From:	Adam Lackorzynski <adam@...inf.tu-dresden.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] 2.6.28, vmalloc.c, vmap_page_range

Hi,

in 2.6.28, the flush_cache_vmap in vmap_page_range() is called with the end of
the range twice. The following patch fixes this for me.

Signed-off-by: Adam Lackorzynski <adam@...inf.tu-dresden.de>
---
 vmalloc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.28/mm/vmalloc.c	2008-12-25 00:26:37.000000000 +0100
+++ linux-2.6.28.a/mm/vmalloc.c	2008-12-25 21:45:43.118725744 +0100
@@ -155,7 +155,7 @@
 				pgprot_t prot, struct page **pages)
 {
 	pgd_t *pgd;
-	unsigned long next;
+	unsigned long next, start = addr;
 	int err = 0;
 	int nr = 0;
 
@@ -167,7 +167,7 @@
 		if (err)
 			break;
 	} while (pgd++, addr = next, addr != end);
-	flush_cache_vmap(addr, end);
+	flush_cache_vmap(start, end);
 
 	if (unlikely(err))
 		return err;




Adam
-- 
Adam                 adam@...inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/
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