From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3861DC28CC5 for ; Sun, 2 Jun 2019 09:46:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1AE41278AC for ; Sun, 2 Jun 2019 09:46:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726360AbfFBJqb (ORCPT ); Sun, 2 Jun 2019 05:46:31 -0400 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]:37016 "EHLO out30-133.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725977AbfFBJqa (ORCPT ); Sun, 2 Jun 2019 05:46:30 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R521e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04400;MF=teawaterz@linux.alibaba.com;NM=1;PH=DS;RN=8;SR=0;TI=SMTPD_---0TTD1lNX_1559468776; Received: from localhost(mailfrom:teawaterz@linux.alibaba.com fp:SMTPD_---0TTD1lNX_1559468776) by smtp.aliyun-inc.com(127.0.0.1); Sun, 02 Jun 2019 17:46:25 +0800 From: Hui Zhu To: ddstreet@ieee.org, minchan@kernel.org, ngupta@vflare.org, sergey.senozhatsky.work@gmail.com, sjenning@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Hui Zhu Subject: [PATCH V2 1/2] zpool: Add malloc_support_movable to zpool_driver Date: Sun, 2 Jun 2019 17:46:06 +0800 Message-Id: <20190602094607.41840-1-teawaterz@linux.alibaba.com> X-Mailer: git-send-email 2.20.1 (Apple Git-117) MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As a zpool_driver, zsmalloc can allocate movable memory because it support migate pages. But zbud and z3fold cannot allocate movable memory. This commit adds malloc_support_movable to zpool_driver. If a zpool_driver support allocate movable memory, set it to true. And add zpool_malloc_support_movable check malloc_support_movable to make sure if a zpool support allocate movable memory. Signed-off-by: Hui Zhu --- include/linux/zpool.h | 3 +++ mm/zpool.c | 16 ++++++++++++++++ mm/zsmalloc.c | 19 ++++++++++--------- 3 files changed, 29 insertions(+), 9 deletions(-) diff --git a/include/linux/zpool.h b/include/linux/zpool.h index 7238865e75b0..51bf43076165 100644 --- a/include/linux/zpool.h +++ b/include/linux/zpool.h @@ -46,6 +46,8 @@ const char *zpool_get_type(struct zpool *pool); void zpool_destroy_pool(struct zpool *pool); +bool zpool_malloc_support_movable(struct zpool *pool); + int zpool_malloc(struct zpool *pool, size_t size, gfp_t gfp, unsigned long *handle); @@ -90,6 +92,7 @@ struct zpool_driver { struct zpool *zpool); void (*destroy)(void *pool); + bool malloc_support_movable; int (*malloc)(void *pool, size_t size, gfp_t gfp, unsigned long *handle); void (*free)(void *pool, unsigned long handle); diff --git a/mm/zpool.c b/mm/zpool.c index a2dd9107857d..863669212070 100644 --- a/mm/zpool.c +++ b/mm/zpool.c @@ -238,6 +238,22 @@ const char *zpool_get_type(struct zpool *zpool) return zpool->driver->type; } +/** + * zpool_malloc_support_movable() - Check if the zpool support + * allocate movable memory + * @zpool: The zpool to check + * + * This returns if the zpool support allocate movable memory. + * + * Implementations must guarantee this to be thread-safe. + * + * Returns: true if if the zpool support allocate movable memory, false if not + */ +bool zpool_malloc_support_movable(struct zpool *zpool) +{ + return zpool->driver->malloc_support_movable; +} + /** * zpool_malloc() - Allocate memory * @zpool: The zpool to allocate from. diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 0787d33b80d8..8f3d9a4d46f4 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -437,15 +437,16 @@ static u64 zs_zpool_total_size(void *pool) } static struct zpool_driver zs_zpool_driver = { - .type = "zsmalloc", - .owner = THIS_MODULE, - .create = zs_zpool_create, - .destroy = zs_zpool_destroy, - .malloc = zs_zpool_malloc, - .free = zs_zpool_free, - .map = zs_zpool_map, - .unmap = zs_zpool_unmap, - .total_size = zs_zpool_total_size, + .type = "zsmalloc", + .owner = THIS_MODULE, + .create = zs_zpool_create, + .destroy = zs_zpool_destroy, + .malloc_support_movable = true, + .malloc = zs_zpool_malloc, + .free = zs_zpool_free, + .map = zs_zpool_map, + .unmap = zs_zpool_unmap, + .total_size = zs_zpool_total_size, }; MODULE_ALIAS("zpool-zsmalloc"); -- 2.20.1 (Apple Git-117)