Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754753AbZJBL50 (ORCPT ); Fri, 2 Oct 2009 07:57:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754432AbZJBL5Y (ORCPT ); Fri, 2 Oct 2009 07:57:24 -0400 Received: from mail.valinux.co.jp ([210.128.90.3]:37850 "EHLO mail.valinux.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753655AbZJBL5W (ORCPT ); Fri, 2 Oct 2009 07:57:22 -0400 Date: Fri, 02 Oct 2009 20:57:25 +0900 (JST) Message-Id: <20091002.205725.104059507.ryov@valinux.co.jp> To: linux-kernel@vger.kernel.org, dm-devel@redhat.com, containers@lists.linux-foundation.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xensource.com Subject: [PATCH 4/9] blkio-cgroup-v13: Refactoring io-context initialization From: Ryo Tsuruta In-Reply-To: <20091002.205701.71114259.ryov@valinux.co.jp> References: <20091002.205607.193712402.ryov@valinux.co.jp> <20091002.205635.226776464.ryov@valinux.co.jp> <20091002.205701.71114259.ryov@valinux.co.jp> X-Mailer: Mew version 5.2.52 on Emacs 22.1 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2493 Lines: 73 This patch refactors io_context initialization. Signed-off-by: Hirokazu Takahashi Signed-off-by: Ryo Tsuruta --- block/blk-ioc.c | 30 +++++++++++++++++------------- include/linux/iocontext.h | 1 + 2 files changed, 18 insertions(+), 13 deletions(-) Index: linux-2.6.32-rc1/block/blk-ioc.c =================================================================== --- linux-2.6.32-rc1.orig/block/blk-ioc.c +++ linux-2.6.32-rc1/block/blk-ioc.c @@ -84,24 +84,28 @@ void exit_io_context(void) } } +void init_io_context(struct io_context *ioc) +{ + atomic_long_set(&ioc->refcount, 1); + atomic_set(&ioc->nr_tasks, 1); + spin_lock_init(&ioc->lock); + ioc->ioprio_changed = 0; + ioc->ioprio = 0; + ioc->last_waited = jiffies; /* doesn't matter... */ + ioc->nr_batch_requests = 0; /* because this is 0 */ + ioc->aic = NULL; + INIT_RADIX_TREE(&ioc->radix_root, GFP_ATOMIC | __GFP_HIGH); + INIT_HLIST_HEAD(&ioc->cic_list); + ioc->ioc_data = NULL; +} + struct io_context *alloc_io_context(gfp_t gfp_flags, int node) { struct io_context *ret; ret = kmem_cache_alloc_node(iocontext_cachep, gfp_flags, node); - if (ret) { - atomic_long_set(&ret->refcount, 1); - atomic_set(&ret->nr_tasks, 1); - spin_lock_init(&ret->lock); - ret->ioprio_changed = 0; - ret->ioprio = 0; - ret->last_waited = jiffies; /* doesn't matter... */ - ret->nr_batch_requests = 0; /* because this is 0 */ - ret->aic = NULL; - INIT_RADIX_TREE(&ret->radix_root, GFP_ATOMIC | __GFP_HIGH); - INIT_HLIST_HEAD(&ret->cic_list); - ret->ioc_data = NULL; - } + if (ret) + init_io_context(ret); return ret; } Index: linux-2.6.32-rc1/include/linux/iocontext.h =================================================================== --- linux-2.6.32-rc1.orig/include/linux/iocontext.h +++ linux-2.6.32-rc1/include/linux/iocontext.h @@ -104,6 +104,7 @@ int put_io_context(struct io_context *io void exit_io_context(void); struct io_context *get_io_context(gfp_t gfp_flags, int node); struct io_context *alloc_io_context(gfp_t gfp_flags, int node); +void init_io_context(struct io_context *ioc); void copy_io_context(struct io_context **pdst, struct io_context **psrc); #else static inline void exit_io_context(void) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/