From patchwork Mon Jul 12 16:56:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 473163 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, URIBL_BLOCKED, 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 D0F56C11F9B for ; Mon, 12 Jul 2021 16:56:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B3F07610FA for ; Mon, 12 Jul 2021 16:56:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234953AbhGLQ70 (ORCPT ); Mon, 12 Jul 2021 12:59:26 -0400 Received: from smtp-out2.suse.de ([195.135.220.29]:54496 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234810AbhGLQ7D (ORCPT ); Mon, 12 Jul 2021 12:59:03 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 565261FFD9; Mon, 12 Jul 2021 16:56:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1626108970; 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=YiTPK3VbhB8SGIIgtQ8YaJoAHU79xdWWrLD1Cz+9DnA=; b=DWtfRnKWjNKnxMsTQ1SGvNjLcy4rPG8skM8ju6TeA/lForojRvwk41zmqAdEVU+4j2Sl0T 2lj26+6LLT3CEcH0/dQ5CwT92qBu7y9vMSaQ73kdSBwtg8o8gFZWUbWAcPWbXM6o77QSqR wGcBUjNjuC1/UkJIHpJlWcTwtKu3o9w= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1626108970; 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=YiTPK3VbhB8SGIIgtQ8YaJoAHU79xdWWrLD1Cz+9DnA=; b=QPP3aWNGs6SfoVhsIbbywwbfUy2k9ad5zIPQlxhzUK/19Pf82NWtcwFChtQuMqeWK1uL+e 6SjL/cWoReVvY2Bg== Received: from quack2.suse.cz (unknown [10.100.224.230]) by relay2.suse.de (Postfix) with ESMTP id 20129A3B92; Mon, 12 Jul 2021 16:56:10 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id DAA901F2CDD; Mon, 12 Jul 2021 18:56:09 +0200 (CEST) From: Jan Kara To: Cc: , Christoph Hellwig , "Darrick J. Wong" , Ted Tso , Dave Chinner , Matthew Wilcox , , , linux-f2fs-devel@lists.sourceforge.net, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, Jan Kara , Damien Le Moal , Johannes Thumshirn , Christoph Hellwig Subject: [PATCH 10/14] zonefs: Convert to using invalidate_lock Date: Mon, 12 Jul 2021 18:56:01 +0200 Message-Id: <20210712165609.13215-10-jack@suse.cz> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210712163901.29514-1-jack@suse.cz> References: <20210712163901.29514-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3579; h=from:subject; bh=A/7AtC2eRQANRoxuBRHLYLyusp8+Mdp8nN+Gi+I3MCo=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBg7HQhO3dYj/Mgvj7UVbam0r3XqE0cuodG8u0lHKX2 sTw+xtuJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCYOx0IQAKCRCcnaoHP2RA2ZqECA Cl/AMWcOtUoG5AqMmm9U66OrwxCWfjmzWhiUUE7/g+ZDsh+x5V9pS4ZjlUFCZnNkQhFnI+cafQaKQS jgqRC1tR5Gg3V/gWt9okHslcx9q0q2WIVMDkzr+YcXTaT9EDNFcpSTQOjuHUkmsZdDsrkM7ZD/v4bn NNkbghi9t+eYi1RyDU3mrtdWoef3tRwW5HmjabHyKAbakl40vDKfYdCFCS+bEdISF2xGhUhakHDsGW IjoBMkjU95+L0nSKOSYbxiSD0CPAh9htJdEWEFApAo8gha6s/ZAOk+Y+ZtaGvSko/dEh8lOHsVB9mV tScsND0zUtnLiV5+Rz+JPrb0l4bw2o 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 Reviewed-by: Christoph Hellwig 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 dbf03635869c..f323bf3b0e82 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;