From patchwork Wed Jun 26 12:03:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Gruenbacher X-Patchwork-Id: 11017531 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B07A614C0 for ; Wed, 26 Jun 2019 12:03:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A06F62871C for ; Wed, 26 Jun 2019 12:03:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 94EFD28774; Wed, 26 Jun 2019 12:03:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 39B9128722 for ; Wed, 26 Jun 2019 12:03:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726708AbfFZMDj (ORCPT ); Wed, 26 Jun 2019 08:03:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54096 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726104AbfFZMDj (ORCPT ); Wed, 26 Jun 2019 08:03:39 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1E264882FD; Wed, 26 Jun 2019 12:03:39 +0000 (UTC) Received: from max.com (unknown [10.40.205.215]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF0986013D; Wed, 26 Jun 2019 12:03:37 +0000 (UTC) From: Andreas Gruenbacher To: Christoph Hellwig , linux-fsdevel@vger.kernel.org Cc: cluster-devel@redhat.com, linux-xfs@vger.kernel.org Subject: [PATCH 2/2] fs: fold __generic_write_end back into generic_write_end Date: Wed, 26 Jun 2019 14:03:33 +0200 Message-Id: <20190626120333.13310-2-agruenba@redhat.com> In-Reply-To: <20190626120333.13310-1-agruenba@redhat.com> References: <20190626120333.13310-1-agruenba@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 26 Jun 2019 12:03:39 +0000 (UTC) Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Christoph Hellwig This effectively reverts a6d639da63ae ("fs: factor out a __generic_write_end helper") as we now open code what is left of that helper in iomap. Signed-off-by: Christoph Hellwig --- fs/buffer.c | 62 ++++++++++++++++++++++++--------------------------- fs/internal.h | 2 -- 2 files changed, 29 insertions(+), 35 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index e450c55f6434..49a871570092 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2086,38 +2086,6 @@ int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len, } EXPORT_SYMBOL(block_write_begin); -void __generic_write_end(struct inode *inode, loff_t pos, unsigned copied, - struct page *page) -{ - loff_t old_size = inode->i_size; - bool i_size_changed = false; - - /* - * No need to use i_size_read() here, the i_size cannot change under us - * because we hold i_rwsem. - * - * But it's important to update i_size while still holding page lock: - * page writeout could otherwise come in and zero beyond i_size. - */ - if (pos + copied > inode->i_size) { - i_size_write(inode, pos + copied); - i_size_changed = true; - } - - unlock_page(page); - - if (old_size < pos) - pagecache_isize_extended(inode, old_size, pos); - /* - * Don't mark the inode dirty under page lock. First, it unnecessarily - * makes the holding time of page lock longer. Second, it forces lock - * ordering of page lock and transaction start for journaling - * filesystems. - */ - if (i_size_changed) - mark_inode_dirty(inode); -} - int block_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) @@ -2158,9 +2126,37 @@ int generic_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) { + struct inode *inode = mapping->host; + loff_t old_size = inode->i_size; + bool i_size_changed = false; + copied = block_write_end(file, mapping, pos, len, copied, page, fsdata); - __generic_write_end(mapping->host, pos, copied, page); + + /* + * No need to use i_size_read() here, the i_size cannot change under us + * because we hold i_rwsem. + * + * But it's important to update i_size while still holding page lock: + * page writeout could otherwise come in and zero beyond i_size. + */ + if (pos + copied > inode->i_size) { + i_size_write(inode, pos + copied); + i_size_changed = true; + } + + unlock_page(page); put_page(page); + + if (old_size < pos) + pagecache_isize_extended(inode, old_size, pos); + /* + * Don't mark the inode dirty under page lock. First, it unnecessarily + * makes the holding time of page lock longer. Second, it forces lock + * ordering of page lock and transaction start for journaling + * filesystems. + */ + if (i_size_changed) + mark_inode_dirty(inode); return copied; } EXPORT_SYMBOL(generic_write_end); diff --git a/fs/internal.h b/fs/internal.h index a48ef81be37d..2f3c3de51fad 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -40,8 +40,6 @@ static inline int __sync_blockdev(struct block_device *bdev, int wait) extern void guard_bio_eod(int rw, struct bio *bio); extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len, get_block_t *get_block, struct iomap *iomap); -void __generic_write_end(struct inode *inode, loff_t pos, unsigned copied, - struct page *page); /* * char_dev.c