From patchwork Mon Feb 19 14:02:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Goldwyn Rodrigues X-Patchwork-Id: 10227877 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id ADE18602B7 for ; Mon, 19 Feb 2018 14:02:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9D7FC283D1 for ; Mon, 19 Feb 2018 14:02:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9221F28417; Mon, 19 Feb 2018 14:02:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 06CB4283D1 for ; Mon, 19 Feb 2018 14:02:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752453AbeBSOCk (ORCPT ); Mon, 19 Feb 2018 09:02:40 -0500 Received: from mx2.suse.de ([195.135.220.15]:40062 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751351AbeBSOCk (ORCPT ); Mon, 19 Feb 2018 09:02:40 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 49A7FAAB9; Mon, 19 Feb 2018 14:02:39 +0000 (UTC) From: Goldwyn Rodrigues To: linux-fsdevel@vger.kernel.org Cc: mhocko@kernel.org, Goldwyn Rodrigues Subject: [PATCH 01/10] fs: buffer - Use memalloc_nofs API to allocate pages Date: Mon, 19 Feb 2018 08:02:21 -0600 Message-Id: <20180219140230.5077-2-rgoldwyn@suse.de> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180219140230.5077-1-rgoldwyn@suse.de> References: <20180219140230.5077-1-rgoldwyn@suse.de> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Goldwyn Rodrigues Signed-off-by: Goldwyn Rodrigues --- fs/buffer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c index 9a73924db22f..1787b29f3fb3 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -45,6 +45,7 @@ #include #include #include +#include #include static int fsync_buffers_list(spinlock_t *lock, struct list_head *list); @@ -836,7 +837,8 @@ struct buffer_head *alloc_page_buffers(struct page *page, unsigned long size, bool retry) { struct buffer_head *bh, *head; - gfp_t gfp = GFP_NOFS; + gfp_t gfp = GFP_KERNEL; + unsigned int nofs_flags; long offset; if (retry) @@ -844,6 +846,7 @@ struct buffer_head *alloc_page_buffers(struct page *page, unsigned long size, head = NULL; offset = PAGE_SIZE; + nofs_flags = memalloc_nofs_save(); while ((offset -= size) >= 0) { bh = alloc_buffer_head(gfp); if (!bh) @@ -858,11 +861,13 @@ struct buffer_head *alloc_page_buffers(struct page *page, unsigned long size, /* Link the buffer to its page */ set_bh_page(bh, page, offset); } + memalloc_nofs_restore(nofs_flags); return head; /* * In case anything failed, we just free everything we got. */ no_grow: + memalloc_nofs_restore(nofs_flags); if (head) { do { bh = head;