From patchwork Mon Jun 7 14:52:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 12303755 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 83783C49ECA for ; Mon, 7 Jun 2021 14:52:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6755361153 for ; Mon, 7 Jun 2021 14:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230269AbhFGOyi (ORCPT ); Mon, 7 Jun 2021 10:54:38 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:34694 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230438AbhFGOyb (ORCPT ); Mon, 7 Jun 2021 10:54:31 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id DE3D321A9B; 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=Y0cR5u9TaTNf3kT8s6I4jpd1jCjKCNBR8ag5a0EBpIA=; b=lRNmVcmRG737AlbDU8H4w/KlwsUwJATOMmnyK9j1C08aviXsnN+z59eaOMXG3SBOcoo8hP X49jgtJSXWZJTSrn32cp+qmrqms9Z6RpgegsMLcHWf+adcj8nnqU+LC6V8BOQzrTU8V5hu p1w/2gMeidgaPqBZqSEpWAXCVUkjENo= 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=Y0cR5u9TaTNf3kT8s6I4jpd1jCjKCNBR8ag5a0EBpIA=; b=DzX0ZLzbeMzKgIqY3N5UjYGxTkUqF+YfzdtDAPtexZAmQW4jN1i8OjliYuGNqWSQdGeMbm JEK/HMzy1klveLCQ== Received: from quack2.suse.cz (unknown [10.100.200.198]) by relay2.suse.de (Postfix) with ESMTP id AE2EAA3B8D; Mon, 7 Jun 2021 14:52:37 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 9D0CF1F2CB5; 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 06/14] ext2: Convert to using invalidate_lock Date: Mon, 7 Jun 2021 16:52:16 +0200 Message-Id: <20210607145236.31852-6-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=4682; h=from:subject; bh=CDcZWsyH32vJE3DSXVHXUVYPxLcy1S8W7KZFP94NQWc=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBgvjKgthhqcWN94OroqMs+dt8ZjvTEGenhtDvbVKo4 rIyqNfCJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCYL4yoAAKCRCcnaoHP2RA2TxZCA CRdo+Mbb6U82tItDgWExu+HN9TPnhfk4Ge6vz5lG4CbHc40AXb90NGmXzbXkb4Qovz6zhJODtOVBtm WmN9EsXJdn7TWSttbSjCX4oqlnUq4Qgu9t+MiXyo8a0JITM3/sXXPF0Gy783DF1SuYMVogVkibN0Kp sCH/g2aptvoJEfUeWcbr1FHGrit1Ojjl/kHhmYGE1dTO9g9Nz0/sqtY4g8jL3ckAelok/zdMZqG7qP WFI8qHzir4+bULWsuaN3XRs28PdT+8L/0SVgYUS8ZUdfO2rXZkWTJP3X0hiuMC4RYgQhQoTmB6cxRS 3HcqGSSnT/qf3t1hzAjFoCJBBGbQxC X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Ext2 has its private dax_sem used for synchronizing page faults and truncation. Use mapping->invalidate_lock instead as it is meant for this purpose. CC: Signed-off-by: Jan Kara --- fs/ext2/ext2.h | 11 ----------- fs/ext2/file.c | 7 +++---- fs/ext2/inode.c | 12 ++++++------ fs/ext2/super.c | 3 --- 4 files changed, 9 insertions(+), 24 deletions(-) diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index b0a694820cb7..81907a041570 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -667,9 +667,6 @@ struct ext2_inode_info { struct rw_semaphore xattr_sem; #endif rwlock_t i_meta_lock; -#ifdef CONFIG_FS_DAX - struct rw_semaphore dax_sem; -#endif /* * truncate_mutex is for serialising ext2_truncate() against @@ -685,14 +682,6 @@ struct ext2_inode_info { #endif }; -#ifdef CONFIG_FS_DAX -#define dax_sem_down_write(ext2_inode) down_write(&(ext2_inode)->dax_sem) -#define dax_sem_up_write(ext2_inode) up_write(&(ext2_inode)->dax_sem) -#else -#define dax_sem_down_write(ext2_inode) -#define dax_sem_up_write(ext2_inode) -#endif - /* * Inode dynamic state flags */ diff --git a/fs/ext2/file.c b/fs/ext2/file.c index f98466acc672..eb97aa3d700e 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -81,7 +81,7 @@ static ssize_t ext2_dax_write_iter(struct kiocb *iocb, struct iov_iter *from) * * mmap_lock (MM) * sb_start_pagefault (vfs, freeze) - * ext2_inode_info->dax_sem + * address_space->invalidate_lock * address_space->i_mmap_rwsem or page_lock (mutually exclusive in DAX) * ext2_inode_info->truncate_mutex * @@ -91,7 +91,6 @@ static ssize_t ext2_dax_write_iter(struct kiocb *iocb, struct iov_iter *from) static vm_fault_t ext2_dax_fault(struct vm_fault *vmf) { struct inode *inode = file_inode(vmf->vma->vm_file); - struct ext2_inode_info *ei = EXT2_I(inode); vm_fault_t ret; bool write = (vmf->flags & FAULT_FLAG_WRITE) && (vmf->vma->vm_flags & VM_SHARED); @@ -100,11 +99,11 @@ static vm_fault_t ext2_dax_fault(struct vm_fault *vmf) sb_start_pagefault(inode->i_sb); file_update_time(vmf->vma->vm_file); } - down_read(&ei->dax_sem); + filemap_invalidate_lock_shared(inode->i_mapping); ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, NULL, &ext2_iomap_ops); - up_read(&ei->dax_sem); + filemap_invalidate_unlock_shared(inode->i_mapping); if (write) sb_end_pagefault(inode->i_sb); return ret; diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 68178b2234bd..2c76b9ffea26 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -1175,7 +1175,7 @@ static void ext2_free_branches(struct inode *inode, __le32 *p, __le32 *q, int de ext2_free_data(inode, p, q); } -/* dax_sem must be held when calling this function */ +/* mapping->invalidate_lock must be held when calling this function */ static void __ext2_truncate_blocks(struct inode *inode, loff_t offset) { __le32 *i_data = EXT2_I(inode)->i_data; @@ -1192,7 +1192,7 @@ static void __ext2_truncate_blocks(struct inode *inode, loff_t offset) iblock = (offset + blocksize-1) >> EXT2_BLOCK_SIZE_BITS(inode->i_sb); #ifdef CONFIG_FS_DAX - WARN_ON(!rwsem_is_locked(&ei->dax_sem)); + WARN_ON(!rwsem_is_locked(&inode->i_mapping->invalidate_lock)); #endif n = ext2_block_to_path(inode, iblock, offsets, NULL); @@ -1274,9 +1274,9 @@ static void ext2_truncate_blocks(struct inode *inode, loff_t offset) if (ext2_inode_is_fast_symlink(inode)) return; - dax_sem_down_write(EXT2_I(inode)); + filemap_invalidate_lock(inode->i_mapping); __ext2_truncate_blocks(inode, offset); - dax_sem_up_write(EXT2_I(inode)); + filemap_invalidate_unlock(inode->i_mapping); } static int ext2_setsize(struct inode *inode, loff_t newsize) @@ -1306,10 +1306,10 @@ static int ext2_setsize(struct inode *inode, loff_t newsize) if (error) return error; - dax_sem_down_write(EXT2_I(inode)); + filemap_invalidate_lock(inode->i_mapping); truncate_setsize(inode, newsize); __ext2_truncate_blocks(inode, newsize); - dax_sem_up_write(EXT2_I(inode)); + filemap_invalidate_unlock(inode->i_mapping); inode->i_mtime = inode->i_ctime = current_time(inode); if (inode_needs_sync(inode)) { diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 21e09fbaa46f..987bcf32ed46 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -206,9 +206,6 @@ static void init_once(void *foo) init_rwsem(&ei->xattr_sem); #endif mutex_init(&ei->truncate_mutex); -#ifdef CONFIG_FS_DAX - init_rwsem(&ei->dax_sem); -#endif inode_init_once(&ei->vfs_inode); }