From patchwork Mon Mar 23 20:22:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11453803 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 264F715AB for ; Mon, 23 Mar 2020 20:23:28 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E8DE220714 for ; Mon, 23 Mar 2020 20:23:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="GpqM04sb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E8DE220714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5BF336B000E; Mon, 23 Mar 2020 16:23:08 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 545FB6B0032; Mon, 23 Mar 2020 16:23:08 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3C2D56B0037; Mon, 23 Mar 2020 16:23:08 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0161.hostedemail.com [216.40.44.161]) by kanga.kvack.org (Postfix) with ESMTP id 0D87D6B000E for ; Mon, 23 Mar 2020 16:23:08 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id B057BAD6E8 for ; Mon, 23 Mar 2020 20:23:07 +0000 (UTC) X-FDA: 76627751214.21.shock55_8fb4152f9e931 X-Spam-Summary: 2,0,0,74dbb8be1eabf087,d41d8cd98f00b204,willy@infradead.org,,RULES_HIT:41:69:355:379:541:800:960:966:973:988:989:1260:1311:1314:1345:1359:1437:1515:1534:1542:1711:1730:1747:1777:1792:2196:2199:2393:2559:2562:2898:3138:3139:3140:3141:3142:3353:3865:3870:3871:4321:4385:4605:5007:6117:6119:6261:6653:6742:7576:7903:7904:8957:9592:10004:11026:11473:11658:11914:12043:12296:12297:12438:12555:12895:12986:13894:14096:14181:14394:14721:21080:21451:21627:21990:30054:30064:30070,0,RBL:198.137.202.133:@infradead.org:.lbl8.mailshell.net-62.8.0.100 64.201.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:1,LUA_SUMMARY:none X-HE-Tag: shock55_8fb4152f9e931 X-Filterd-Recvd-Size: 4811 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Mon, 23 Mar 2020 20:23:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=qGMDtGI8LcILAiviNIJOK9D4EAi8624WVoxyVV3Hgf4=; b=GpqM04sbe6riKS+15W0ugVavP6 Apf+u6QJ4Hta+TVnwLxfhu0lR/o5eMq2YMzSRxqV1WJMT4DE/xg6HZkuskBGaovRmyE8hYh5qFqog A8xp50rkVr/2QDJyUsy+/I0BbeYMJRhdS3/cwQUttvRr0c0kGgJCCV4czApsFvjjeqe/gvRWH+PSX fYFU3xGhaR7WuxJGMj8A9UErysQ5v8qZCwsr/kVdE/uKjzNcVGwEwFsz7IePsFTCUET3a0eG6tW3I JuZLWWCOtkaW/6xgEeis+jCq/zpwokSH/5QTXuT+EgNhBqdYo+71WOCT8KdFQum4tnjtU36DwMjiX jT07SCtQ==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jGTbC-0003Vj-15; Mon, 23 Mar 2020 20:23:02 +0000 From: Matthew Wilcox To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, linux-xfs@vger.kernel.org, Gao Xiang , Dave Chinner , William Kucharski , Chao Yu Subject: [PATCH v10 19/25] erofs: Convert compressed files from readpages to readahead Date: Mon, 23 Mar 2020 13:22:53 -0700 Message-Id: <20200323202259.13363-20-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200323202259.13363-1-willy@infradead.org> References: <20200323202259.13363-1-willy@infradead.org> MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Matthew Wilcox (Oracle)" Use the new readahead operation in erofs. Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Gao Xiang Reviewed-by: Dave Chinner Reviewed-by: William Kucharski Reviewed-by: Chao Yu --- fs/erofs/zdata.c | 29 +++++++++-------------------- 1 file changed, 9 insertions(+), 20 deletions(-) diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index acbfe05b1b12..be50a4d9d273 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -1305,28 +1305,23 @@ static bool should_decompress_synchronously(struct erofs_sb_info *sbi, return nr <= sbi->ctx.max_sync_decompress_pages; } -static int z_erofs_readpages(struct file *filp, struct address_space *mapping, - struct list_head *pages, unsigned int nr_pages) +static void z_erofs_readahead(struct readahead_control *rac) { - struct inode *const inode = mapping->host; + struct inode *const inode = rac->mapping->host; struct erofs_sb_info *const sbi = EROFS_I_SB(inode); - bool sync = should_decompress_synchronously(sbi, nr_pages); + bool sync = should_decompress_synchronously(sbi, readahead_count(rac)); struct z_erofs_decompress_frontend f = DECOMPRESS_FRONTEND_INIT(inode); - gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL); - struct page *head = NULL; + struct page *page, *head = NULL; LIST_HEAD(pagepool); - trace_erofs_readpages(mapping->host, lru_to_page(pages)->index, - nr_pages, false); + trace_erofs_readpages(inode, readahead_index(rac), + readahead_count(rac), false); - f.headoffset = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT; - - for (; nr_pages; --nr_pages) { - struct page *page = lru_to_page(pages); + f.headoffset = readahead_pos(rac); + while ((page = readahead_page(rac))) { prefetchw(&page->flags); - list_del(&page->lru); /* * A pure asynchronous readahead is indicated if @@ -1335,11 +1330,6 @@ static int z_erofs_readpages(struct file *filp, struct address_space *mapping, */ sync &= !(PageReadahead(page) && !head); - if (add_to_page_cache_lru(page, mapping, page->index, gfp)) { - list_add(&page->lru, &pagepool); - continue; - } - set_page_private(page, (unsigned long)head); head = page; } @@ -1368,11 +1358,10 @@ static int z_erofs_readpages(struct file *filp, struct address_space *mapping, /* clean up the remaining free pages */ put_pages_list(&pagepool); - return 0; } const struct address_space_operations z_erofs_aops = { .readpage = z_erofs_readpage, - .readpages = z_erofs_readpages, + .readahead = z_erofs_readahead, };