From patchwork Tue May 25 13:50:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 12279019 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=-13.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 960E2C47090 for ; Tue, 25 May 2021 13:51:23 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3EDBD6140F for ; Tue, 25 May 2021 13:51:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EDBD6140F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 4B7A88E0002; Tue, 25 May 2021 09:51:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4FC2D6B007B; Tue, 25 May 2021 09:51:07 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3A38B6B0074; Tue, 25 May 2021 09:51:06 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0250.hostedemail.com [216.40.44.250]) by kanga.kvack.org (Postfix) with ESMTP id ABE3C6B0078 for ; Tue, 25 May 2021 09:51:05 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 53D0D8249980 for ; Tue, 25 May 2021 13:51:05 +0000 (UTC) X-FDA: 78179889690.25.FF38752 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf07.hostedemail.com (Postfix) with ESMTP id 49BEEA0001DD for ; Tue, 25 May 2021 13:50:58 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1621950662; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kB8D9k39JtQJCl3AVAkwJZ425HH4XDMjMOFRNOgKP/I=; b=hhFjuewPPkzpqwyim/+s6EstHlCtUmWSrztFo7NO2/aAxnYnCzUXvcrLKdJ9U45DXyEy8q G6mrF6Uz1Nj8rCsxoMf2QBAhjJ7H7yUl8jEcHTJfl3j+F6NxaTGjstzwsvrIUuzTkxyHLk hytCQupPMqj3oOhWSkIGandHsOC+6Ss= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1621950662; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kB8D9k39JtQJCl3AVAkwJZ425HH4XDMjMOFRNOgKP/I=; b=o9w/h1SuZLQO+PynVUZFVqaRzYYdF8Huu70O3irbRSFqgpcdRVfcfC2ywp/lWKL6jGfFqp b5UqwndivSC4e4Bg== Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 04B66AED6; Tue, 25 May 2021 13:51:01 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 342821F2CB8; Tue, 25 May 2021 15:51:00 +0200 (CEST) From: Jan Kara To: Cc: Christoph Hellwig , Dave Chinner , ceph-devel@vger.kernel.org, Chao Yu , Damien Le Moal , "Darrick J. Wong" , Jaegeuk Kim , Jeff Layton , Johannes Thumshirn , linux-cifs@vger.kernel.org, , linux-f2fs-devel@lists.sourceforge.net, , , Miklos Szeredi , Steve French , Ted Tso , Matthew Wilcox , Jan Kara Subject: [PATCH 09/13] zonefs: Convert to using invalidate_lock Date: Tue, 25 May 2021 15:50:46 +0200 Message-Id: <20210525135100.11221-9-jack@suse.cz> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210525125652.20457-1-jack@suse.cz> References: <20210525125652.20457-1-jack@suse.cz> MIME-Version: 1.0 Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=hhFjuewP; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b="o9w/h1Su"; dmarc=none; spf=pass (imf07.hostedemail.com: domain of jack@suse.cz designates 195.135.220.15 as permitted sender) smtp.mailfrom=jack@suse.cz X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 49BEEA0001DD X-Stat-Signature: bhzri1oxtd8yyt6hgmtfm6eo5wssu1k4 X-HE-Tag: 1621950658-942773 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: Use invalidate_lock instead of zonefs' private i_mmap_sem. The intended purpose is exactly the same. CC: Damien Le Moal CC: Johannes Thumshirn CC: Acked-by: Damien Le Moal Signed-off-by: Jan Kara --- fs/zonefs/super.c | 23 +++++------------------ fs/zonefs/zonefs.h | 7 +++---- 2 files changed, 8 insertions(+), 22 deletions(-) diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index cd145d318b17..da2e95d98677 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -462,7 +462,7 @@ static int zonefs_file_truncate(struct inode *inode, loff_t isize) inode_dio_wait(inode); /* Serialize against page faults */ - down_write(&zi->i_mmap_sem); + down_write(&inode->i_mapping->invalidate_lock); /* Serialize against zonefs_iomap_begin() */ mutex_lock(&zi->i_truncate_mutex); @@ -500,7 +500,7 @@ static int zonefs_file_truncate(struct inode *inode, loff_t isize) unlock: mutex_unlock(&zi->i_truncate_mutex); - up_write(&zi->i_mmap_sem); + up_write(&inode->i_mapping->invalidate_lock); return ret; } @@ -575,18 +575,6 @@ static int zonefs_file_fsync(struct file *file, loff_t start, loff_t end, return ret; } -static vm_fault_t zonefs_filemap_fault(struct vm_fault *vmf) -{ - struct zonefs_inode_info *zi = ZONEFS_I(file_inode(vmf->vma->vm_file)); - vm_fault_t ret; - - down_read(&zi->i_mmap_sem); - ret = filemap_fault(vmf); - up_read(&zi->i_mmap_sem); - - return ret; -} - static vm_fault_t zonefs_filemap_page_mkwrite(struct vm_fault *vmf) { struct inode *inode = file_inode(vmf->vma->vm_file); @@ -607,16 +595,16 @@ static vm_fault_t zonefs_filemap_page_mkwrite(struct vm_fault *vmf) file_update_time(vmf->vma->vm_file); /* Serialize against truncates */ - down_read(&zi->i_mmap_sem); + down_read(&inode->i_mapping->invalidate_lock); ret = iomap_page_mkwrite(vmf, &zonefs_iomap_ops); - up_read(&zi->i_mmap_sem); + up_read(&inode->i_mapping->invalidate_lock); sb_end_pagefault(inode->i_sb); return ret; } static const struct vm_operations_struct zonefs_file_vm_ops = { - .fault = zonefs_filemap_fault, + .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = zonefs_filemap_page_mkwrite, }; @@ -1158,7 +1146,6 @@ static struct inode *zonefs_alloc_inode(struct super_block *sb) inode_init_once(&zi->i_vnode); mutex_init(&zi->i_truncate_mutex); - init_rwsem(&zi->i_mmap_sem); zi->i_wr_refcnt = 0; return &zi->i_vnode; diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h index 51141907097c..7b147907c328 100644 --- a/fs/zonefs/zonefs.h +++ b/fs/zonefs/zonefs.h @@ -70,12 +70,11 @@ struct zonefs_inode_info { * and changes to the inode private data, and in particular changes to * a sequential file size on completion of direct IO writes. * Serialization of mmap read IOs with truncate and syscall IO - * operations is done with i_mmap_sem in addition to i_truncate_mutex. - * Only zonefs_seq_file_truncate() takes both lock (i_mmap_sem first, - * i_truncate_mutex second). + * operations is done with invalidate_lock in addition to + * i_truncate_mutex. Only zonefs_seq_file_truncate() takes both lock + * (invalidate_lock first, i_truncate_mutex second). */ struct mutex i_truncate_mutex; - struct rw_semaphore i_mmap_sem; /* guarded by i_truncate_mutex */ unsigned int i_wr_refcnt;