From: Christoph Lameter <clameter@sgi.com>
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org
Subject: [patch 12/14] VM: Allow get_page_unless_zero on compound pages
Date: Tue, 25 Sep 2007 16:25:55 -0700 [thread overview]
Message-ID: <20070925233008.256376051@sgi.com> (raw)
In-Reply-To: <20070925232543.036615409@sgi.com>
[-- Attachment #1: 0011-slab_defrag_get_page_unless.patch --]
[-- Type: text/plain, Size: 1030 bytes --]
Both slab defrag and the large blocksize patches need to ability to take
refcounts on compound pages. May be useful in other places as well.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
include/linux/mm.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
Index: linux-2.6.23-rc8-mm1/include/linux/mm.h
===================================================================
--- linux-2.6.23-rc8-mm1.orig/include/linux/mm.h 2007-09-25 14:53:58.000000000 -0700
+++ linux-2.6.23-rc8-mm1/include/linux/mm.h 2007-09-25 14:56:30.000000000 -0700
@@ -227,7 +227,7 @@ static inline int put_page_testzero(stru
*/
static inline int get_page_unless_zero(struct page *page)
{
- VM_BUG_ON(PageCompound(page));
+ VM_BUG_ON(PageTail(page));
return atomic_inc_not_zero(&page->_count);
}
--
--
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next prev parent reply other threads:[~2007-09-25 23:25 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-25 23:25 [patch 00/14] Misc cleanups / fixes Christoph Lameter
2007-09-25 23:25 ` [patch 01/14] Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user Christoph Lameter
2007-09-25 23:25 ` [patch 02/14] Reiser4 portion of zero_user cleanup patch Christoph Lameter
2007-09-25 23:25 ` [patch 03/14] Move vmalloc_to_page() to mm/vmalloc Christoph Lameter
2007-09-25 23:25 ` [patch 04/14] vmalloc: add const to void ..tmp_kallsyms1.o.cmd ..tmp_kallsyms2.o.cmd ..tmp_vmlinux1.cmd ..tmp_vmlinux2.cmd .cf .cf1 .cf2 .cf3 .cfnet .config .config.old .gitignore .mailmap .missing-syscalls.d .pc .tmp_System.map .tmp_kallsyms1.S .tmp_kallsyms1.o .tmp_kallsyms2.S .tmp_kallsyms2.o .tmp_versions .tmp_vmlinux1 .tmp_vmlinux2 .version .vmlinux.cmd .vmlinux.o.cmd COPYING CREDITS Documentation Kbuild MAINTAINERS Makefile Module.symvers README REPORTING-BUGS System.map arch b block crypto drivers fs include init ipc kernel lib linux-2.6.23-rc8-mm1.tar.gz mips mm net patches scripts security sound tar-install test test_out usr vmlinux vmlinux.gz vmlinux.o vmlinux.sym xx parameters Christoph Lameter
2007-09-25 23:25 ` [patch 05/14] i386: Resolve dependency of asm-i386/pgtable.h on highmem.h Christoph Lameter
2007-09-25 23:25 ` [patch 06/14] is_vmalloc_addr(): Check if an address is within the vmalloc boundaries Christoph Lameter
2007-09-25 23:25 ` [patch 07/14] vmalloc: Clean up page array indexing Christoph Lameter
2007-09-25 23:25 ` [patch 08/14] vunmap: return page array passed on vmap() Christoph Lameter
2007-09-25 23:25 ` [patch 09/14] SLUB: Move count_partial() Christoph Lameter
2007-09-25 23:25 ` [patch 10/14] SLUB: Rename NUMA defrag_ratio to remote_node_defrag_ratio Christoph Lameter
2007-09-25 23:25 ` [patch 11/14] SLUB: Consolidate add_partial() and add_partial_tail() to one function Christoph Lameter
2007-09-25 23:25 ` Christoph Lameter [this message]
2007-09-25 23:25 ` [patch 13/14] dentries: Extract common code to remove dentry from lru Christoph Lameter
2007-10-22 21:29 ` Andrew Morton
2007-10-25 2:23 ` Christoph Lameter
2007-10-25 2:34 ` Andrew Morton
2007-10-25 2:50 ` Christoph Lameter
2007-10-25 3:03 ` Andrew Morton
2007-09-25 23:25 ` [patch 14/14] bufferhead: Revert constructor removal Christoph Lameter
2007-10-22 21:31 ` Andrew Morton
2007-10-25 2:25 ` Christoph Lameter
2007-09-27 20:25 ` [patch 00/14] Misc cleanups / fixes Andrew Morton
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