From patchwork Mon Jun 7 14:52:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 455426 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=-16.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,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 C7D28C49ED6 for ; Mon, 7 Jun 2021 14:52:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B153A61108 for ; Mon, 7 Jun 2021 14:52:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231371AbhFGOyj (ORCPT ); Mon, 7 Jun 2021 10:54:39 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:51664 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230481AbhFGOyb (ORCPT ); Mon, 7 Jun 2021 10:54:31 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id D2A781FDD4; Mon, 7 Jun 2021 14:52:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1623077557; 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=emP2yQ1eljPd1NFX6C4KS1pG2iKhLeUQkNZ2AuwC2+s=; b=M0d+f8btnCIe1QK/dux+/6AQfIyyA/+aDbfV8qb30yBxhWh6TMzBgrC3+avIrmPbcZzJ9r ir1hn38uTd6Hgjk+8td+UxOlJXLbd8frAlcBvtF6DQYY3Lk1hTqrSbOxG+/kOVO/QvmUJ0 +rfKfYtP0POGSeqCcArR+QX77x3kqzk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1623077557; 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=emP2yQ1eljPd1NFX6C4KS1pG2iKhLeUQkNZ2AuwC2+s=; b=Mrs92P348/BMc30iG2PezhMoktG73qKm6adBOt7FIzmlw6nEWuy6rlFva1dQf829UAqptu niFzpiGEe/n4UQBw== Received: from quack2.suse.cz (unknown [10.100.200.198]) by relay2.suse.de (Postfix) with ESMTP id B4324A3B96; Mon, 7 Jun 2021 14:52:37 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id B10E21F2CB9; Mon, 7 Jun 2021 16:52:36 +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 10/14] zonefs: Convert to using invalidate_lock Date: Mon, 7 Jun 2021 16:52:20 +0200 Message-Id: <20210607145236.31852-10-jack@suse.cz> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210607144631.8717-1-jack@suse.cz> References: <20210607144631.8717-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3534; h=from:subject; bh=X1+FAHnRq/hvKiFmSNKc+MwXBtDprJwr7H1BxXLJ9wE=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBgvjKkL5zkdMExsJLTZiQSWW/f9riYmtp7RAK4a4BF P6yR1FuJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCYL4ypAAKCRCcnaoHP2RA2dAfCA DQMh0/p+yS2UAZ84nujOxvtQWyQ6awdWkN4hNN/NdNp5tF69bN9+gs7jwWbp/UgDdJ220wsXGvYJJi l2EAGoCfm5elr4VAcWec5uAdxI7bkybITdz43ZbQNdoG4lLMGhMmUlcJuWoIxcmRYB/Vbz4++4lVy5 YWxTPGE72IpnydtQTVWRFcrzV+Yh5gwq63DnNxLIlJzyJqjZzL4px5hWCRzj2BTRO5I8fDVED+93vB t8BHGAyhO1G3UR2EqKW06PigQJdrTfBpGHLGlIPkuQMrITkTMahJAzT839RpHEZVE/7E/lTMzdWSZP znTAQKojbwMw4ceZJxqEdetQR2BhGh X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org 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..8931a566038e 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); + filemap_invalidate_lock(inode->i_mapping); /* 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); + filemap_invalidate_unlock(inode->i_mapping); 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); + filemap_invalidate_lock_shared(inode->i_mapping); ret = iomap_page_mkwrite(vmf, &zonefs_iomap_ops); - up_read(&zi->i_mmap_sem); + filemap_invalidate_unlock_shared(inode->i_mapping); 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;