From: Nick Piggin <npiggin@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Linux Memory Management List <linux-mm@kvack.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
jk@ozlabs.org, jes@trained-monkey.org, cpw@sgi.com
Subject: [patch 1/4] mm: allow pfnmap ->fault()s
Date: Fri, 2 May 2008 05:20:33 +0200 [thread overview]
Message-ID: <20080502032032.GE11844@wotan.suse.de> (raw)
In-Reply-To: <20080502031903.GD11844@wotan.suse.de>
Take out an assertion to allow ->fault handlers to service PFNMAP regions.
This is required to reimplement .nopfn handlers with .fault handlers and
subsequently remove nopfn.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Jes Sorensen <jes@sgi.com>
---
mm/memory.c | 2 --
1 file changed, 2 deletions(-)
Index: linux-2.6/mm/memory.c
===================================================================
--- linux-2.6.orig/mm/memory.c
+++ linux-2.6/mm/memory.c
@@ -2275,8 +2275,6 @@ static int __do_fault(struct mm_struct *
vmf.flags = flags;
vmf.page = NULL;
- BUG_ON(vma->vm_flags & VM_PFNMAP);
-
ret = vma->vm_ops->fault(vma, &vmf);
if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
return ret;
--
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next prev parent reply other threads:[~2008-05-02 3:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-02 3:19 [patch 0/4] remove nopfn Nick Piggin
2008-05-02 3:20 ` Nick Piggin [this message]
2008-05-02 3:21 ` [patch 2/4] mspec: convert nopfn to fault Nick Piggin
2008-05-06 12:27 ` Robin Holt
2008-05-02 3:22 ` [patch 3/4] spufs: " Nick Piggin
2008-05-02 4:06 ` Jeremy Kerr
2008-05-02 4:47 ` Nick Piggin
2008-05-02 9:43 ` Jeremy Kerr
2008-05-03 5:41 ` Nick Piggin
2008-05-06 3:01 ` Jeremy Kerr
2008-05-06 8:38 ` Nick Piggin
2008-05-02 5:06 ` Nick Piggin
2008-05-02 6:45 ` Jeremy Kerr
2008-05-02 3:23 ` [patch 4/4] mm: remove nopfn Nick Piggin
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