From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755556Ab2BGHzC (ORCPT ); Tue, 7 Feb 2012 02:55:02 -0500 Received: from mail-bk0-f46.google.com ([209.85.214.46]:40289 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751349Ab2BGHzA (ORCPT ); Tue, 7 Feb 2012 02:55:00 -0500 Subject: [PATCH 0/4] radix-tree: iterating general cleanup To: linux-mm@kvack.org, Andrew Morton , Hugh Dickins , Linus Torvalds , linux-kernel@vger.kernel.org From: Konstantin Khlebnikov Date: Tue, 07 Feb 2012 11:54:56 +0400 Message-ID: <20120207074905.29797.60353.stgit@zurg> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset implements common radix-tree iteration routine and reworks page-cache lookup functions with using it. radix_tree_gang_lookup_*slot() now mostly unused (the last user somethere in drivers/sh/intc/virq.c), but they are exported, we cannot remove them for now. Also there some shmem-related radix-tree hacks can be reworked, radix_tree_locate_item() can be removed. I already have a few extra patches. And as usual my lovely bloat-o-meter: add/remove: 4/3 grow/shrink: 4/4 up/down: 1232/-964 (268) function old new delta radix_tree_next_chunk - 499 +499 static.shmem_find_get_pages_and_swap - 404 +404 find_get_pages_tag 354 488 +134 find_get_pages 362 438 +76 find_get_pages_contig 345 407 +62 __kstrtab_radix_tree_next_chunk - 22 +22 shmem_truncate_range 1633 1652 +19 __ksymtab_radix_tree_next_chunk - 16 +16 radix_tree_gang_lookup_tag_slot 208 180 -28 radix_tree_gang_lookup_tag 247 207 -40 radix_tree_gang_lookup_slot 204 162 -42 radix_tree_gang_lookup 231 160 -71 __lookup 217 - -217 __lookup_tag 242 - -242 shmem_find_get_pages_and_swap 324 - -324 --- Konstantin Khlebnikov (4): bitops: implement "optimized" __find_next_bit() radix-tree: introduce bit-optimized iterator radix-tree: rewrite gang lookup with using iterator radix-tree: use iterators in find_get_pages* functions include/asm-generic/bitops/find.h | 36 +++ include/linux/radix-tree.h | 129 +++++++++++ lib/radix-tree.c | 422 +++++++++++++------------------------ mm/filemap.c | 75 ++++--- mm/shmem.c | 23 +- 5 files changed, 375 insertions(+), 310 deletions(-) -- Signature