From patchwork Wed May 24 06:38:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253340 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8E58CC7EE31 for ; Wed, 24 May 2023 06:38:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239737AbjEXGii (ORCPT ); Wed, 24 May 2023 02:38:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239380AbjEXGia (ORCPT ); Wed, 24 May 2023 02:38:30 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 585B51A8; Tue, 23 May 2023 23:38:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=3ZBFgl7r+XFxtKE+zV/zBQvmUj5fJULrZ1iHCvCgOQw=; b=tY0urzL7m/HaNOr8G/zUxyGp6S FoIjFAcvbfI8RdwE9ZHdSIYwIRQyGst2BgdCR0tD2X6tKPmuCSp0vBcKBcdPFZuE4GHVVoD9zLDr0 b+Yh7HhLY2ZVQm7bq03t8ljOce4Vrq0LuSG5ojDtyi+R37g358hJD9UQGsuI81vZLgpsyzd+szQHt pdXXj3y5w+W5irwoxqxjY/b0xjxll0KN9YQ9zY6ubXAMLGTfDy5pieRjAIOb2YGFpXe86r0Tgm2FI Cq+X1Exb264UkIRUBUZY5Z8AANOVfor9+6VCoY5hlbVi75rryBPnYgBjKHjo2s6K7l09DQi8/Kj4B W+d85bUg==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8W-00CVeW-2b; Wed, 24 May 2023 06:38:17 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 01/11] backing_dev: remove current->backing_dev_info Date: Wed, 24 May 2023 08:38:00 +0200 Message-Id: <20230524063810.1595778-2-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org The last user of current->backing_dev_info disappeared in commit b9b1335e6403 ("remove bdi_congested() and wb_congested() and related functions"). Remove the field and all assignments to it. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- fs/btrfs/file.c | 6 +----- fs/ceph/file.c | 4 ---- fs/ext4/file.c | 2 -- fs/f2fs/file.c | 2 -- fs/fuse/file.c | 4 ---- fs/gfs2/file.c | 2 -- fs/nfs/file.c | 5 +---- fs/ntfs/file.c | 2 -- fs/ntfs3/file.c | 3 --- fs/xfs/xfs_file.c | 4 ---- include/linux/sched.h | 3 --- mm/filemap.c | 3 --- 12 files changed, 2 insertions(+), 38 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index f649647392e0e4..ecd43ab66fa6c7 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1145,7 +1145,6 @@ static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, !(BTRFS_I(inode)->flags & (BTRFS_INODE_NODATACOW | BTRFS_INODE_PREALLOC))) return -EAGAIN; - current->backing_dev_info = inode_to_bdi(inode); ret = file_remove_privs(file); if (ret) return ret; @@ -1165,10 +1164,8 @@ static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, loff_t end_pos = round_up(pos + count, fs_info->sectorsize); ret = btrfs_cont_expand(BTRFS_I(inode), oldsize, end_pos); - if (ret) { - current->backing_dev_info = NULL; + if (ret) return ret; - } } return 0; @@ -1689,7 +1686,6 @@ ssize_t btrfs_do_write_iter(struct kiocb *iocb, struct iov_iter *from, if (sync) atomic_dec(&inode->sync_writers); - current->backing_dev_info = NULL; return num_written; } diff --git a/fs/ceph/file.c b/fs/ceph/file.c index f4d8bf7dec88a8..c8ef72f723badd 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1791,9 +1791,6 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from) else ceph_start_io_write(inode); - /* We can write back this queue in page reclaim */ - current->backing_dev_info = inode_to_bdi(inode); - if (iocb->ki_flags & IOCB_APPEND) { err = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE, false); if (err < 0) @@ -1940,7 +1937,6 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from) ceph_end_io_write(inode); out_unlocked: ceph_free_cap_flush(prealloc_cf); - current->backing_dev_info = NULL; return written ? written : err; } diff --git a/fs/ext4/file.c b/fs/ext4/file.c index d101b3b0c7dad8..bc430270c23c19 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -285,9 +285,7 @@ static ssize_t ext4_buffered_write_iter(struct kiocb *iocb, if (ret <= 0) goto out; - current->backing_dev_info = inode_to_bdi(inode); ret = generic_perform_write(iocb, from); - current->backing_dev_info = NULL; out: inode_unlock(inode); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 5ac53d2627d20d..4f423d367a44b9 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -4517,9 +4517,7 @@ static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb, if (iocb->ki_flags & IOCB_NOWAIT) return -EOPNOTSUPP; - current->backing_dev_info = inode_to_bdi(inode); ret = generic_perform_write(iocb, from); - current->backing_dev_info = NULL; if (ret > 0) { iocb->ki_pos += ret; diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 89d97f6188e05e..97d435874b14aa 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1362,9 +1362,6 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) writethrough: inode_lock(inode); - /* We can write back this queue in page reclaim */ - current->backing_dev_info = inode_to_bdi(inode); - err = generic_write_checks(iocb, from); if (err <= 0) goto out; @@ -1409,7 +1406,6 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) iocb->ki_pos += written; } out: - current->backing_dev_info = NULL; inode_unlock(inode); if (written > 0) written = generic_write_sync(iocb, written); diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 300844f50dcd28..904a0d6ac1a1a9 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -1041,11 +1041,9 @@ static ssize_t gfs2_file_buffered_write(struct kiocb *iocb, goto out_unlock; } - current->backing_dev_info = inode_to_bdi(inode); pagefault_disable(); ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops); pagefault_enable(); - current->backing_dev_info = NULL; if (ret > 0) { iocb->ki_pos += ret; written += ret; diff --git a/fs/nfs/file.c b/fs/nfs/file.c index f0edf5a36237d1..665ce3fc62eaf4 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -648,11 +648,8 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) since = filemap_sample_wb_err(file->f_mapping); nfs_start_io_write(inode); result = generic_write_checks(iocb, from); - if (result > 0) { - current->backing_dev_info = inode_to_bdi(inode); + if (result > 0) result = generic_perform_write(iocb, from); - current->backing_dev_info = NULL; - } nfs_end_io_write(inode); if (result <= 0) goto out; diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index c481b14e4fd989..e296f804a9c442 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -1911,11 +1911,9 @@ static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) inode_lock(vi); /* We can write back this queue in page reclaim. */ - current->backing_dev_info = inode_to_bdi(vi); err = ntfs_prepare_file_for_write(iocb, from); if (iov_iter_count(from) && !err) written = ntfs_perform_write(file, from, iocb->ki_pos); - current->backing_dev_info = NULL; inode_unlock(vi); iocb->ki_pos += written; if (likely(written > 0)) diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index 9a3d55c367d920..86d16a2c8339ca 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -820,7 +820,6 @@ static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from) if (!pages) return -ENOMEM; - current->backing_dev_info = inode_to_bdi(inode); err = file_remove_privs(file); if (err) goto out; @@ -993,8 +992,6 @@ static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from) out: kfree(pages); - current->backing_dev_info = NULL; - if (err < 0) return err; diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index aede746541f8ae..431c3fd0e2b598 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -717,9 +717,6 @@ xfs_file_buffered_write( if (ret) goto out; - /* We can write back this queue in page reclaim */ - current->backing_dev_info = inode_to_bdi(inode); - trace_xfs_file_buffered_write(iocb, from); ret = iomap_file_buffered_write(iocb, from, &xfs_buffered_write_iomap_ops); @@ -753,7 +750,6 @@ xfs_file_buffered_write( goto write_retry; } - current->backing_dev_info = NULL; out: if (iolock) xfs_iunlock(ip, iolock); diff --git a/include/linux/sched.h b/include/linux/sched.h index eed5d65b8d1f4d..54780571fe9a07 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -41,7 +41,6 @@ /* task_struct member predeclarations (sorted alphabetically): */ struct audit_context; -struct backing_dev_info; struct bio_list; struct blk_plug; struct bpf_local_storage; @@ -1186,8 +1185,6 @@ struct task_struct { /* VM state: */ struct reclaim_state *reclaim_state; - struct backing_dev_info *backing_dev_info; - struct io_context *io_context; #ifdef CONFIG_COMPACTION diff --git a/mm/filemap.c b/mm/filemap.c index b4c9bd368b7e58..33b54660ad2b39 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3991,8 +3991,6 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) ssize_t err; ssize_t status; - /* We can write back this queue in page reclaim */ - current->backing_dev_info = inode_to_bdi(inode); err = file_remove_privs(file); if (err) goto out; @@ -4053,7 +4051,6 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) iocb->ki_pos += written; } out: - current->backing_dev_info = NULL; return written ? written : err; } EXPORT_SYMBOL(__generic_file_write_iter); From patchwork Wed May 24 06:38:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253344 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46859C83005 for ; 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Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8a-00CVes-0r; Wed, 24 May 2023 06:38:20 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 02/11] iomap: update ki_pos a little later in iomap_dio_complete Date: Wed, 24 May 2023 08:38:01 +0200 Message-Id: <20230524063810.1595778-3-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Move the ki_pos update down a bit to prepare for a better common helper that invalidates pages based of an iocb. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- fs/iomap/direct-io.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index 019cc87d0fb339..6207a59d2162e1 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -94,7 +94,6 @@ ssize_t iomap_dio_complete(struct iomap_dio *dio) if (offset + ret > dio->i_size && !(dio->flags & IOMAP_DIO_WRITE)) ret = dio->i_size - offset; - iocb->ki_pos += ret; } /* @@ -120,19 +119,21 @@ ssize_t iomap_dio_complete(struct iomap_dio *dio) } inode_dio_end(file_inode(iocb->ki_filp)); - /* - * If this is a DSYNC write, make sure we push it to stable storage now - * that we've written data. - */ - if (ret > 0 && (dio->flags & IOMAP_DIO_NEED_SYNC)) - ret = generic_write_sync(iocb, ret); - if (ret > 0) - ret += dio->done_before; + if (ret > 0) { + iocb->ki_pos += ret; + /* + * If this is a DSYNC write, make sure we push it to stable + * storage now that we've written data. + */ + if (dio->flags & IOMAP_DIO_NEED_SYNC) + ret = generic_write_sync(iocb, ret); + if (ret > 0) + ret += dio->done_before; + } trace_iomap_dio_complete(iocb, dio->error, ret); kfree(dio); - return ret; } EXPORT_SYMBOL_GPL(iomap_dio_complete); From patchwork Wed May 24 06:38:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253341 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3E2DC7EE32 for ; Wed, 24 May 2023 06:38:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239790AbjEXGit (ORCPT ); Wed, 24 May 2023 02:38:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239715AbjEXGib (ORCPT ); Wed, 24 May 2023 02:38:31 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA56518B; Tue, 23 May 2023 23:38:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=eC4fKlJuAZk6Bs9zfH3GxbdW7XFrPuxkzUVDWdmQe5g=; b=U875Nf6B+VixmZn3RCK57UbTUU IFC0MeeaeIlbgfB/LVshuRLIofQrNBg07H6ArsN/S4kztKs2Gdx3sBck98mxzZ6RTXhCQBVXC7/u7 i9xBhUMRbD7a1jKdA/JPzbaHfjiavwo4CIWKOoe1Yj8Z05UGrZF2AThxvYxwSQAyFfc87tXPIZ4vh V39JXltuaCnrdgxByGkJWT2mJPgbOnQgbZY/NGQM3agFFFH5l75VSVn8S/KTo2KbrkM03l+cEvvBf e/uITYC+j0JHWGaMUQ5DoVgNuR0TXMLu4m5OFU/iCDA+DzlVkPoKbiFDcpNMAlA0wT7qfVqH4Z4nE WHCJyCJw==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8c-00CVf8-2h; Wed, 24 May 2023 06:38:23 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 03/11] filemap: update ki_pos in generic_perform_write Date: Wed, 24 May 2023 08:38:02 +0200 Message-Id: <20230524063810.1595778-4-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org All callers of generic_perform_write need to updated ki_pos, move it into common code. Signed-off-by: Christoph Hellwig Reviewed-by: Xiubo Li Reviewed-by: Damien Le Moal Acked-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- fs/ceph/file.c | 2 -- fs/ext4/file.c | 9 +++------ fs/f2fs/file.c | 1 - fs/nfs/file.c | 1 - mm/filemap.c | 8 ++++---- 5 files changed, 7 insertions(+), 14 deletions(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index c8ef72f723badd..767f4dfe7def64 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1891,8 +1891,6 @@ static ssize_t ceph_write_iter(struct kiocb *iocb, struct iov_iter *from) * can not run at the same time */ written = generic_perform_write(iocb, from); - if (likely(written >= 0)) - iocb->ki_pos = pos + written; ceph_end_io_write(inode); } diff --git a/fs/ext4/file.c b/fs/ext4/file.c index bc430270c23c19..ea0ada3985cba2 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -289,12 +289,9 @@ static ssize_t ext4_buffered_write_iter(struct kiocb *iocb, out: inode_unlock(inode); - if (likely(ret > 0)) { - iocb->ki_pos += ret; - ret = generic_write_sync(iocb, ret); - } - - return ret; + if (unlikely(ret <= 0)) + return ret; + return generic_write_sync(iocb, ret); } static ssize_t ext4_handle_inode_extension(struct inode *inode, loff_t offset, diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 4f423d367a44b9..7134fe8bd008cb 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -4520,7 +4520,6 @@ static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb, ret = generic_perform_write(iocb, from); if (ret > 0) { - iocb->ki_pos += ret; f2fs_update_iostat(F2FS_I_SB(inode), inode, APP_BUFFERED_IO, ret); } diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 665ce3fc62eaf4..e8bb4c48a3210a 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -655,7 +655,6 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from) goto out; written = result; - iocb->ki_pos += written; nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, written); if (mntflags & NFS_MOUNT_WRITE_EAGER) { diff --git a/mm/filemap.c b/mm/filemap.c index 33b54660ad2b39..15907af4a57ff5 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3957,7 +3957,10 @@ ssize_t generic_perform_write(struct kiocb *iocb, struct iov_iter *i) balance_dirty_pages_ratelimited(mapping); } while (iov_iter_count(i)); - return written ? written : status; + if (!written) + return status; + iocb->ki_pos += written; + return written; } EXPORT_SYMBOL(generic_perform_write); @@ -4034,7 +4037,6 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) endbyte = pos + status - 1; err = filemap_write_and_wait_range(mapping, pos, endbyte); if (err == 0) { - iocb->ki_pos = endbyte + 1; written += status; invalidate_mapping_pages(mapping, pos >> PAGE_SHIFT, @@ -4047,8 +4049,6 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) } } else { written = generic_perform_write(iocb, from); - if (likely(written > 0)) - iocb->ki_pos += written; } out: return written ? written : err; From patchwork Wed May 24 06:38:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253342 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E1E3C77B7C for ; Wed, 24 May 2023 06:38:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233554AbjEXGit (ORCPT ); Wed, 24 May 2023 02:38:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239719AbjEXGig (ORCPT ); Wed, 24 May 2023 02:38:36 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 90225184; Tue, 23 May 2023 23:38:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=JJwCNovA8Hvn4E2j3I1EFqtVuzu7mduVb6MIKUgJaYA=; b=KluVLKd9ujTBULz/Oac6KpUAEF sPSrWCifr7i0eK+kRjnOHUKMBeVjKARBkPf9xwEJp8kT01+lLQv6MRd/hqkSNoQUcLqKZ7/BGrDcN dA3NJJNXp/9uMXRhkFjxdjy5Cix+8ukkPMb/2IOstgyXPxekPMR5F0U56sNBp9qT4v2u57Ha/q7kF ydIlmlrEAUFmlDYIA9/lAt6aihuql08dwpcpP9IBMk2Pqg/kgz/RSPJciiTw5Eona1z8aYRGjnxl5 dgFQlf2gaeA/3y76BPGTs55ud6OcsdO38YfGliCEJWIcQ5j89VqlB+U7Y62S6aiqSM7c2KLIuczIz /3UPYgzg==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8f-00CVfQ-1M; Wed, 24 May 2023 06:38:26 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 04/11] filemap: add a kiocb_write_and_wait helper Date: Wed, 24 May 2023 08:38:03 +0200 Message-Id: <20230524063810.1595778-5-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Factor out a helper that does filemap_write_and_wait_range for the range covered by a read kiocb, or returns -EAGAIN if the kiocb is marked as nowait and there would be pages to write. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Acked-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- block/fops.c | 18 +++--------------- include/linux/pagemap.h | 2 ++ mm/filemap.c | 30 ++++++++++++++++++------------ 3 files changed, 23 insertions(+), 27 deletions(-) diff --git a/block/fops.c b/block/fops.c index 58d0aebc7313a8..575171049c5d83 100644 --- a/block/fops.c +++ b/block/fops.c @@ -576,21 +576,9 @@ static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to) goto reexpand; /* skip atime */ if (iocb->ki_flags & IOCB_DIRECT) { - struct address_space *mapping = iocb->ki_filp->f_mapping; - - if (iocb->ki_flags & IOCB_NOWAIT) { - if (filemap_range_needs_writeback(mapping, pos, - pos + count - 1)) { - ret = -EAGAIN; - goto reexpand; - } - } else { - ret = filemap_write_and_wait_range(mapping, pos, - pos + count - 1); - if (ret < 0) - goto reexpand; - } - + ret = kiocb_write_and_wait(iocb, count); + if (ret < 0) + goto reexpand; file_accessed(iocb->ki_filp); ret = blkdev_direct_IO(iocb, to); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index a56308a9d1a450..36fc2cea13ce20 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -30,6 +30,7 @@ static inline void invalidate_remote_inode(struct inode *inode) int invalidate_inode_pages2(struct address_space *mapping); int invalidate_inode_pages2_range(struct address_space *mapping, pgoff_t start, pgoff_t end); + int write_inode_now(struct inode *, int sync); int filemap_fdatawrite(struct address_space *); int filemap_flush(struct address_space *); @@ -54,6 +55,7 @@ int filemap_check_errors(struct address_space *mapping); void __filemap_set_wb_err(struct address_space *mapping, int err); int filemap_fdatawrite_wbc(struct address_space *mapping, struct writeback_control *wbc); +int kiocb_write_and_wait(struct kiocb *iocb, size_t count); static inline int filemap_write_and_wait(struct address_space *mapping) { diff --git a/mm/filemap.c b/mm/filemap.c index 15907af4a57ff5..5fcd5227f9cae2 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2762,6 +2762,21 @@ ssize_t filemap_read(struct kiocb *iocb, struct iov_iter *iter, } EXPORT_SYMBOL_GPL(filemap_read); +int kiocb_write_and_wait(struct kiocb *iocb, size_t count) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + loff_t pos = iocb->ki_pos; + loff_t end = pos + count - 1; + + if (iocb->ki_flags & IOCB_NOWAIT) { + if (filemap_range_needs_writeback(mapping, pos, end)) + return -EAGAIN; + return 0; + } + + return filemap_write_and_wait_range(mapping, pos, end); +} + /** * generic_file_read_iter - generic filesystem read routine * @iocb: kernel I/O control block @@ -2797,18 +2812,9 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; - if (iocb->ki_flags & IOCB_NOWAIT) { - if (filemap_range_needs_writeback(mapping, iocb->ki_pos, - iocb->ki_pos + count - 1)) - return -EAGAIN; - } else { - retval = filemap_write_and_wait_range(mapping, - iocb->ki_pos, - iocb->ki_pos + count - 1); - if (retval < 0) - return retval; - } - + retval = kiocb_write_and_wait(iocb, count); + if (retval < 0) + return retval; file_accessed(file); retval = mapping->a_ops->direct_IO(iocb, iter); From patchwork Wed May 24 06:38:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253343 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 206BAC7EE37 for ; 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Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8i-00CVfn-1t; Wed, 24 May 2023 06:38:28 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 05/11] filemap: add a kiocb_invalidate_pages helper Date: Wed, 24 May 2023 08:38:04 +0200 Message-Id: <20230524063810.1595778-6-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Factor out a helper that calls filemap_write_and_wait_range and invalidate_inode_pages2_range for the range covered by a write kiocb or returns -EAGAIN if the kiocb is marked as nowait and there would be pages to write or invalidate. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Acked-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- include/linux/pagemap.h | 1 + mm/filemap.c | 48 ++++++++++++++++++++++++----------------- 2 files changed, 29 insertions(+), 20 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 36fc2cea13ce20..6e4c9ee40baa99 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -30,6 +30,7 @@ static inline void invalidate_remote_inode(struct inode *inode) int invalidate_inode_pages2(struct address_space *mapping); int invalidate_inode_pages2_range(struct address_space *mapping, pgoff_t start, pgoff_t end); +int kiocb_invalidate_pages(struct kiocb *iocb, size_t count); int write_inode_now(struct inode *, int sync); int filemap_fdatawrite(struct address_space *); diff --git a/mm/filemap.c b/mm/filemap.c index 5fcd5227f9cae2..a1cb01a4b8046a 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2777,6 +2777,33 @@ int kiocb_write_and_wait(struct kiocb *iocb, size_t count) return filemap_write_and_wait_range(mapping, pos, end); } +int kiocb_invalidate_pages(struct kiocb *iocb, size_t count) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + loff_t pos = iocb->ki_pos; + loff_t end = pos + count - 1; + int ret; + + if (iocb->ki_flags & IOCB_NOWAIT) { + /* we could block if there are any pages in the range */ + if (filemap_range_has_page(mapping, pos, end)) + return -EAGAIN; + } else { + ret = filemap_write_and_wait_range(mapping, pos, end); + if (ret) + return ret; + } + + /* + * After a write we want buffered reads to be sure to go to disk to get + * the new data. We invalidate clean cached page from the region we're + * about to write. We do this *before* the write so that we can return + * without clobbering -EIOCBQUEUED from ->direct_IO(). + */ + return invalidate_inode_pages2_range(mapping, pos >> PAGE_SHIFT, + end >> PAGE_SHIFT); +} + /** * generic_file_read_iter - generic filesystem read routine * @iocb: kernel I/O control block @@ -3820,30 +3847,11 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) write_len = iov_iter_count(from); end = (pos + write_len - 1) >> PAGE_SHIFT; - if (iocb->ki_flags & IOCB_NOWAIT) { - /* If there are pages to writeback, return */ - if (filemap_range_has_page(file->f_mapping, pos, - pos + write_len - 1)) - return -EAGAIN; - } else { - written = filemap_write_and_wait_range(mapping, pos, - pos + write_len - 1); - if (written) - goto out; - } - - /* - * After a write we want buffered reads to be sure to go to disk to get - * the new data. We invalidate clean cached page from the region we're - * about to write. We do this *before* the write so that we can return - * without clobbering -EIOCBQUEUED from ->direct_IO(). - */ - written = invalidate_inode_pages2_range(mapping, - pos >> PAGE_SHIFT, end); /* * If a page can not be invalidated, return 0 to fall back * to buffered write. */ + written = kiocb_invalidate_pages(iocb, write_len); if (written) { if (written == -EBUSY) return 0; From patchwork Wed May 24 06:38:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253345 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BCEAAC8300C for ; Wed, 24 May 2023 06:38:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239743AbjEXGix (ORCPT ); Wed, 24 May 2023 02:38:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239656AbjEXGil (ORCPT ); Wed, 24 May 2023 02:38:41 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0266618B; Tue, 23 May 2023 23:38:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=HdqYutACGg449lbpC5g+tM8dj77PJUcg5E3vRPFmYq0=; b=aIT9RxPAfhHOwqFZulkLmucxGV rLmMDARC7Dok2azH//gTb4c6Pv6q2CYBKqB8tbL2AuYl8Tfm9vOJ5XyRfvYGxjYgaZYnnX2Hx6xah vrC1KPdTBTHrMFDf6/pdyS2fU62TnVe2a/zKaA4Er+WhodXEB55zZVt7ffWjrFYZ8qwq2O1XSL6jZ Jf55EKX6Pdh43s8/PobRAATn/qfOc8Kte4qHFp4RoHJZ42gh+MbsmJr0BE8l4SxPAs7j+iwO11vfy 2Y+30GGr5oR4tTZ1yrEZRl9Jb/f+do7t9ATt+B+FC6zzk83WgR+wA/beHBKCN+AZh236kLMfXWU/D OHHhHfaQ==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8l-00CVg9-0q; Wed, 24 May 2023 06:38:31 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 06/11] filemap: add a kiocb_invalidate_post_direct_write helper Date: Wed, 24 May 2023 08:38:05 +0200 Message-Id: <20230524063810.1595778-7-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Add a helper to invalidate page cache after a dio write. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Acked-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- fs/direct-io.c | 10 ++-------- fs/iomap/direct-io.c | 12 ++---------- include/linux/fs.h | 5 ----- include/linux/pagemap.h | 1 + mm/filemap.c | 37 ++++++++++++++++++++----------------- 5 files changed, 25 insertions(+), 40 deletions(-) diff --git a/fs/direct-io.c b/fs/direct-io.c index 0b380bb8a81e11..4f9069aee0fe19 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -285,14 +285,8 @@ static ssize_t dio_complete(struct dio *dio, ssize_t ret, unsigned int flags) * zeros from unwritten extents. */ if (flags & DIO_COMPLETE_INVALIDATE && - ret > 0 && dio_op == REQ_OP_WRITE && - dio->inode->i_mapping->nrpages) { - err = invalidate_inode_pages2_range(dio->inode->i_mapping, - offset >> PAGE_SHIFT, - (offset + ret - 1) >> PAGE_SHIFT); - if (err) - dio_warn_stale_pagecache(dio->iocb->ki_filp); - } + ret > 0 && dio_op == REQ_OP_WRITE) + kiocb_invalidate_post_direct_write(dio->iocb, ret); inode_dio_end(dio->inode); diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index 6207a59d2162e1..0795c54a745bca 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -81,7 +81,6 @@ ssize_t iomap_dio_complete(struct iomap_dio *dio) { const struct iomap_dio_ops *dops = dio->dops; struct kiocb *iocb = dio->iocb; - struct inode *inode = file_inode(iocb->ki_filp); loff_t offset = iocb->ki_pos; ssize_t ret = dio->error; @@ -108,15 +107,8 @@ ssize_t iomap_dio_complete(struct iomap_dio *dio) * ->end_io() when necessary, otherwise a racing buffer read would cache * zeros from unwritten extents. */ - if (!dio->error && dio->size && - (dio->flags & IOMAP_DIO_WRITE) && inode->i_mapping->nrpages) { - int err; - err = invalidate_inode_pages2_range(inode->i_mapping, - offset >> PAGE_SHIFT, - (offset + dio->size - 1) >> PAGE_SHIFT); - if (err) - dio_warn_stale_pagecache(iocb->ki_filp); - } + if (!dio->error && dio->size && (dio->flags & IOMAP_DIO_WRITE)) + kiocb_invalidate_post_direct_write(iocb, dio->size); inode_dio_end(file_inode(iocb->ki_filp)); diff --git a/include/linux/fs.h b/include/linux/fs.h index 21a98168085641..e4efc1792a877a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2837,11 +2837,6 @@ static inline void inode_dio_end(struct inode *inode) wake_up_bit(&inode->i_state, __I_DIO_WAKEUP); } -/* - * Warn about a page cache invalidation failure diring a direct I/O write. - */ -void dio_warn_stale_pagecache(struct file *filp); - extern void inode_set_flags(struct inode *inode, unsigned int flags, unsigned int mask); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 6e4c9ee40baa99..6ecc4aaf5e3d51 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -31,6 +31,7 @@ int invalidate_inode_pages2(struct address_space *mapping); int invalidate_inode_pages2_range(struct address_space *mapping, pgoff_t start, pgoff_t end); int kiocb_invalidate_pages(struct kiocb *iocb, size_t count); +void kiocb_invalidate_post_direct_write(struct kiocb *iocb, size_t count); int write_inode_now(struct inode *, int sync); int filemap_fdatawrite(struct address_space *); diff --git a/mm/filemap.c b/mm/filemap.c index a1cb01a4b8046a..ddb6f8aa86d6ca 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -3816,7 +3816,7 @@ EXPORT_SYMBOL(read_cache_page_gfp); /* * Warn about a page cache invalidation failure during a direct I/O write. */ -void dio_warn_stale_pagecache(struct file *filp) +static void dio_warn_stale_pagecache(struct file *filp) { static DEFINE_RATELIMIT_STATE(_rs, 86400 * HZ, DEFAULT_RATELIMIT_BURST); char pathname[128]; @@ -3833,19 +3833,23 @@ void dio_warn_stale_pagecache(struct file *filp) } } +void kiocb_invalidate_post_direct_write(struct kiocb *iocb, size_t count) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + + if (mapping->nrpages && + invalidate_inode_pages2_range(mapping, + iocb->ki_pos >> PAGE_SHIFT, + (iocb->ki_pos + count - 1) >> PAGE_SHIFT)) + dio_warn_stale_pagecache(iocb->ki_filp); +} + ssize_t generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) { - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; - loff_t pos = iocb->ki_pos; - ssize_t written; - size_t write_len; - pgoff_t end; - - write_len = iov_iter_count(from); - end = (pos + write_len - 1) >> PAGE_SHIFT; + struct address_space *mapping = iocb->ki_filp->f_mapping; + size_t write_len = iov_iter_count(from); + ssize_t written; /* * If a page can not be invalidated, return 0 to fall back @@ -3855,7 +3859,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) if (written) { if (written == -EBUSY) return 0; - goto out; + return written; } written = mapping->a_ops->direct_IO(iocb, from); @@ -3877,11 +3881,11 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) * * Skip invalidation for async writes or if mapping has no pages. */ - if (written > 0 && mapping->nrpages && - invalidate_inode_pages2_range(mapping, pos >> PAGE_SHIFT, end)) - dio_warn_stale_pagecache(file); - if (written > 0) { + struct inode *inode = mapping->host; + loff_t pos = iocb->ki_pos; + + kiocb_invalidate_post_direct_write(iocb, written); pos += written; write_len -= written; if (pos > i_size_read(inode) && !S_ISBLK(inode->i_mode)) { @@ -3892,7 +3896,6 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from) } if (written != -EIOCBQUEUED) iov_iter_revert(from, write_len - iov_iter_count(from)); -out: return written; } EXPORT_SYMBOL(generic_file_direct_write); From patchwork Wed May 24 06:38:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253347 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0C498C7EE43 for ; 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Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8n-00CVgm-2V; Wed, 24 May 2023 06:38:34 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 07/11] iomap: update ki_pos in iomap_file_buffered_write Date: Wed, 24 May 2023 08:38:06 +0200 Message-Id: <20230524063810.1595778-8-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org All callers of iomap_file_buffered_write need to updated ki_pos, move it into common code. Signed-off-by: Christoph Hellwig Acked-by: Damien Le Moal Reviewed-by: Darrick J. Wong Reviewed-by: Andreas Gruenbacher Reviewed-by: Hannes Reinecke --- fs/gfs2/file.c | 4 +--- fs/iomap/buffered-io.c | 9 ++++++--- fs/xfs/xfs_file.c | 2 -- fs/zonefs/file.c | 4 +--- 4 files changed, 8 insertions(+), 11 deletions(-) diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 904a0d6ac1a1a9..c6a7555d5ad8bb 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -1044,10 +1044,8 @@ static ssize_t gfs2_file_buffered_write(struct kiocb *iocb, pagefault_disable(); ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops); pagefault_enable(); - if (ret > 0) { - iocb->ki_pos += ret; + if (ret > 0) written += ret; - } if (inode == sdp->sd_rindex) gfs2_glock_dq_uninit(statfs_gh); diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 063133ec77f49e..550525a525c45c 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -864,16 +864,19 @@ iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i, .len = iov_iter_count(i), .flags = IOMAP_WRITE, }; - int ret; + ssize_t ret; if (iocb->ki_flags & IOCB_NOWAIT) iter.flags |= IOMAP_NOWAIT; while ((ret = iomap_iter(&iter, ops)) > 0) iter.processed = iomap_write_iter(&iter, i); - if (iter.pos == iocb->ki_pos) + + if (unlikely(ret < 0)) return ret; - return iter.pos - iocb->ki_pos; + ret = iter.pos - iocb->ki_pos; + iocb->ki_pos += ret; + return ret; } EXPORT_SYMBOL_GPL(iomap_file_buffered_write); diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 431c3fd0e2b598..d57443db633637 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -720,8 +720,6 @@ xfs_file_buffered_write( trace_xfs_file_buffered_write(iocb, from); ret = iomap_file_buffered_write(iocb, from, &xfs_buffered_write_iomap_ops); - if (likely(ret >= 0)) - iocb->ki_pos += ret; /* * If we hit a space limit, try to free up some lingering preallocated diff --git a/fs/zonefs/file.c b/fs/zonefs/file.c index 132f01d3461f14..e212d0636f848e 100644 --- a/fs/zonefs/file.c +++ b/fs/zonefs/file.c @@ -643,9 +643,7 @@ static ssize_t zonefs_file_buffered_write(struct kiocb *iocb, goto inode_unlock; ret = iomap_file_buffered_write(iocb, from, &zonefs_write_iomap_ops); - if (ret > 0) - iocb->ki_pos += ret; - else if (ret == -EIO) + if (ret == -EIO) zonefs_io_error(inode, true); inode_unlock: From patchwork Wed May 24 06:38:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253346 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D063C7EE32 for ; Wed, 24 May 2023 06:39:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234570AbjEXGjL (ORCPT ); Wed, 24 May 2023 02:39:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239755AbjEXGio (ORCPT ); Wed, 24 May 2023 02:38:44 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B61F41A4; Tue, 23 May 2023 23:38:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=UGcays7SHtJ30c2YB72Xoeq2mxU68x0UDEkjnGlewMo=; b=qGygllY5nnLJOFYyd0IBWQFSLQ EZRHhM8vXPJRpF7uMOuG8ZcWfWL49uI8P24Xjrd3+TBG2ba06CYT1Tki5Tc+pxSgIqvYZ8NcjEohR 57ll/L5ERXco+rn8oNDpkolxK8nebCYh8CBEV843AEYixyxCv7TYDxS1qGAORZVqrKw8bWV1FbS0y NsHl2Ecyndoz0kXEJACW+wX5KzE5uQuK6zIUFsTmXcDQu0yTIm5olLObpfTWlPt1gD8tBwmwFxHzS rkzCUHnWktCU/Iqvy5KBUEACLMonmTd3FskyrdBZZ+17oEQwG/YhB1b4cZb5+fKS94wcg1c2w18RG cdczDtgQ==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8q-00CVhQ-1A; Wed, 24 May 2023 06:38:36 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 08/11] iomap: use kiocb_write_and_wait and kiocb_invalidate_pages Date: Wed, 24 May 2023 08:38:07 +0200 Message-Id: <20230524063810.1595778-9-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Use the common helpers for direct I/O page invalidation instead of open coding the logic. This leads to a slight reordering of checks in __iomap_dio_rw to keep the logic straight. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Darrick J. Wong Reviewed-by: Hannes Reinecke --- fs/iomap/direct-io.c | 55 ++++++++++++++++---------------------------- 1 file changed, 20 insertions(+), 35 deletions(-) diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index 0795c54a745bca..6bd14691f96e07 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -472,7 +472,6 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, const struct iomap_ops *ops, const struct iomap_dio_ops *dops, unsigned int dio_flags, void *private, size_t done_before) { - struct address_space *mapping = iocb->ki_filp->f_mapping; struct inode *inode = file_inode(iocb->ki_filp); struct iomap_iter iomi = { .inode = inode, @@ -481,11 +480,11 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, .flags = IOMAP_DIRECT, .private = private, }; - loff_t end = iomi.pos + iomi.len - 1, ret = 0; bool wait_for_completion = is_sync_kiocb(iocb) || (dio_flags & IOMAP_DIO_FORCE_WAIT); struct blk_plug plug; struct iomap_dio *dio; + loff_t ret = 0; trace_iomap_dio_rw_begin(iocb, iter, dio_flags, done_before); @@ -509,31 +508,29 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, dio->submit.waiter = current; dio->submit.poll_bio = NULL; + if (iocb->ki_flags & IOCB_NOWAIT) + iomi.flags |= IOMAP_NOWAIT; + if (iov_iter_rw(iter) == READ) { if (iomi.pos >= dio->i_size) goto out_free_dio; - if (iocb->ki_flags & IOCB_NOWAIT) { - if (filemap_range_needs_writeback(mapping, iomi.pos, - end)) { - ret = -EAGAIN; - goto out_free_dio; - } - iomi.flags |= IOMAP_NOWAIT; - } - if (user_backed_iter(iter)) dio->flags |= IOMAP_DIO_DIRTY; + + ret = kiocb_write_and_wait(iocb, iomi.len); + if (ret) + goto out_free_dio; } else { iomi.flags |= IOMAP_WRITE; dio->flags |= IOMAP_DIO_WRITE; - if (iocb->ki_flags & IOCB_NOWAIT) { - if (filemap_range_has_page(mapping, iomi.pos, end)) { - ret = -EAGAIN; + if (dio_flags & IOMAP_DIO_OVERWRITE_ONLY) { + ret = -EAGAIN; + if (iomi.pos >= dio->i_size || + iomi.pos + iomi.len > dio->i_size) goto out_free_dio; - } - iomi.flags |= IOMAP_NOWAIT; + iomi.flags |= IOMAP_OVERWRITE_ONLY; } /* for data sync or sync, we need sync completion processing */ @@ -549,31 +546,19 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, if (!(iocb->ki_flags & IOCB_SYNC)) dio->flags |= IOMAP_DIO_WRITE_FUA; } - } - - if (dio_flags & IOMAP_DIO_OVERWRITE_ONLY) { - ret = -EAGAIN; - if (iomi.pos >= dio->i_size || - iomi.pos + iomi.len > dio->i_size) - goto out_free_dio; - iomi.flags |= IOMAP_OVERWRITE_ONLY; - } - ret = filemap_write_and_wait_range(mapping, iomi.pos, end); - if (ret) - goto out_free_dio; - - if (iov_iter_rw(iter) == WRITE) { /* * Try to invalidate cache pages for the range we are writing. * If this invalidation fails, let the caller fall back to * buffered I/O. */ - if (invalidate_inode_pages2_range(mapping, - iomi.pos >> PAGE_SHIFT, end >> PAGE_SHIFT)) { - trace_iomap_dio_invalidate_fail(inode, iomi.pos, - iomi.len); - ret = -ENOTBLK; + ret = kiocb_invalidate_pages(iocb, iomi.len); + if (ret) { + if (ret != -EAGAIN) { + trace_iomap_dio_invalidate_fail(inode, iomi.pos, + iomi.len); + ret = -ENOTBLK; + } goto out_free_dio; } From patchwork Wed May 24 06:38:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253348 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4601C77B7A for ; Wed, 24 May 2023 06:40:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239163AbjEXGkF (ORCPT ); Wed, 24 May 2023 02:40:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239088AbjEXGi4 (ORCPT ); Wed, 24 May 2023 02:38:56 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9A10E58; Tue, 23 May 2023 23:38:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=DuSI6OMC8P69e9w39tXFOndbEiGmzCe8R8L+odlgjgw=; b=0Qg7PBPMhzJDDeLv8Rqy6M7JAb 8k8XDfr7gosbki8YW1OPh/Xlmot6rYDT/mDCbXqA3BPW+zZcIe3FXGThCbPkhur2e+HMw+d4wYowy 0CJfJz5vrLO/S4zcFsHJLU99CEw0c2tfwCem9AUTZ0e9Pxa99F5SPl1ChWbKYU+/5C3w2ObMvuTAy 1NXVnYWz+JNuUJ4bHEl40eKIcuM8QL/G0nVxdhkgT1tagjWs1rSoDMrM6MnqYT2ZCc25yRHhNWXyM IZSDR0+FWgC4BldGhUdfB8nRnQAAY0i5yf4TkdO51rKiexpi09016vufJ9PPlGS6Tmjsn3wZP20mW BaPqCKkQ==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8t-00CVho-07; Wed, 24 May 2023 06:38:39 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 09/11] fs: factor out a direct_write_fallback helper Date: Wed, 24 May 2023 08:38:08 +0200 Message-Id: <20230524063810.1595778-10-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Add a helper dealing with handling the syncing of a buffered write fallback for direct I/O. Signed-off-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- fs/libfs.c | 36 +++++++++++++++++++++++++ include/linux/fs.h | 2 ++ mm/filemap.c | 66 +++++++++++----------------------------------- 3 files changed, 53 insertions(+), 51 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index 89cf614a327158..ad37a49e2ecfb7 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -1613,3 +1613,39 @@ u64 inode_query_iversion(struct inode *inode) return cur >> I_VERSION_QUERIED_SHIFT; } EXPORT_SYMBOL(inode_query_iversion); + +ssize_t direct_write_fallback(struct kiocb *iocb, struct iov_iter *iter, + ssize_t direct_written, ssize_t buffered_written) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + loff_t pos = iocb->ki_pos - buffered_written; + loff_t end = iocb->ki_pos - 1; + int err; + + /* + * If the buffered write fallback returned an error, we want to return + * the number of bytes which were written by direct I/O, or the error + * code if that was zero. + * + * Note that this differs from normal direct-io semantics, which will + * return -EFOO even if some bytes were written. + */ + if (unlikely(buffered_written < 0)) + return buffered_written; + + /* + * We need to ensure that the page cache pages are written to disk and + * invalidated to preserve the expected O_DIRECT semantics. + */ + err = filemap_write_and_wait_range(mapping, pos, end); + if (err < 0) { + /* + * We don't know how much we wrote, so just return the number of + * bytes which were direct-written + */ + return err; + } + invalidate_mapping_pages(mapping, pos >> PAGE_SHIFT, end >> PAGE_SHIFT); + return direct_written + buffered_written; +} +EXPORT_SYMBOL_GPL(direct_write_fallback); diff --git a/include/linux/fs.h b/include/linux/fs.h index e4efc1792a877a..576a945db178ef 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2738,6 +2738,8 @@ extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *); extern ssize_t generic_file_direct_write(struct kiocb *, struct iov_iter *); ssize_t generic_perform_write(struct kiocb *, struct iov_iter *); +ssize_t direct_write_fallback(struct kiocb *iocb, struct iov_iter *iter, + ssize_t direct_written, ssize_t buffered_written); ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, rwf_t flags); diff --git a/mm/filemap.c b/mm/filemap.c index ddb6f8aa86d6ca..137508da5525b6 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -4006,23 +4006,19 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; - ssize_t written = 0; - ssize_t err; - ssize_t status; + struct inode *inode = mapping->host; + ssize_t ret; - err = file_remove_privs(file); - if (err) - goto out; + ret = file_remove_privs(file); + if (ret) + return ret; - err = file_update_time(file); - if (err) - goto out; + ret = file_update_time(file); + if (ret) + return ret; if (iocb->ki_flags & IOCB_DIRECT) { - loff_t pos, endbyte; - - written = generic_file_direct_write(iocb, from); + ret = generic_file_direct_write(iocb, from); /* * If the write stopped short of completing, fall back to * buffered writes. Some filesystems do this for writes to @@ -4030,45 +4026,13 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from) * not succeed (even if it did, DAX does not handle dirty * page-cache pages correctly). */ - if (written < 0 || !iov_iter_count(from) || IS_DAX(inode)) - goto out; - - pos = iocb->ki_pos; - status = generic_perform_write(iocb, from); - /* - * If generic_perform_write() returned a synchronous error - * then we want to return the number of bytes which were - * direct-written, or the error code if that was zero. Note - * that this differs from normal direct-io semantics, which - * will return -EFOO even if some bytes were written. - */ - if (unlikely(status < 0)) { - err = status; - goto out; - } - /* - * We need to ensure that the page cache pages are written to - * disk and invalidated to preserve the expected O_DIRECT - * semantics. - */ - endbyte = pos + status - 1; - err = filemap_write_and_wait_range(mapping, pos, endbyte); - if (err == 0) { - written += status; - invalidate_mapping_pages(mapping, - pos >> PAGE_SHIFT, - endbyte >> PAGE_SHIFT); - } else { - /* - * We don't know how much we wrote, so just return - * the number of bytes which were direct-written - */ - } - } else { - written = generic_perform_write(iocb, from); + if (ret < 0 || !iov_iter_count(from) || IS_DAX(inode)) + return ret; + return direct_write_fallback(iocb, from, ret, + generic_perform_write(iocb, from)); } -out: - return written ? written : err; + + return generic_perform_write(iocb, from); } EXPORT_SYMBOL(__generic_file_write_iter); From patchwork Wed May 24 06:38:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253349 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60418C77B7C for ; Wed, 24 May 2023 06:40:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239693AbjEXGkZ (ORCPT ); Wed, 24 May 2023 02:40:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239817AbjEXGjN (ORCPT ); Wed, 24 May 2023 02:39:13 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57D22E7C; Tue, 23 May 2023 23:38:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=eobR5ofZ8yxLf84yh50zZqRr7gdMKJnXJJVUfhV2d0w=; b=2ZfYf4T/+f++kX0X6NMRNZXwFn 6aJYCflJ4wEp0XLVUCdXCN0nfsQ5luRD33XEc2EqYblO0dhiYNMTUNSmJchUW/7enLAPlmHRPVTRN HrjFHfPzJiM/nyFHTY8ScCLT7mFVz+NtIFvc/acgUikn31hWmFmFJ4FMTJq/43ss5+MCXBqLVImmE A9pdpS5w9NbP2G9XPCMhi0fFgf0vvzeY/WWuMXCznPPcLFetHBcLbiKST4MtObidiE+5CIpuLwNdm pCu2aMfTqEU6JWZiCVS25Y7Gz/zN3AFzBMMo8MRaMCSzXHj+V3ehXBI9NdPv8q47zr966sS5g1e0P EcTndYAw==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8v-00CVjC-1x; Wed, 24 May 2023 06:38:42 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 10/11] fuse: update ki_pos in fuse_perform_write Date: Wed, 24 May 2023 08:38:09 +0200 Message-Id: <20230524063810.1595778-11-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Both callers of fuse_perform_write need to updated ki_pos, move it into common code. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- fs/fuse/file.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 97d435874b14aa..90d587a7bdf813 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1329,7 +1329,10 @@ static ssize_t fuse_perform_write(struct kiocb *iocb, fuse_write_update_attr(inode, pos, res); clear_bit(FUSE_I_SIZE_UNSTABLE, &fi->state); - return res > 0 ? res : err; + if (!res) + return err; + iocb->ki_pos += res; + return res; } static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) @@ -1375,41 +1378,35 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) goto out; if (iocb->ki_flags & IOCB_DIRECT) { - loff_t pos = iocb->ki_pos; written = generic_file_direct_write(iocb, from); if (written < 0 || !iov_iter_count(from)) goto out; - pos += written; - - written_buffered = fuse_perform_write(iocb, mapping, from, pos); + written_buffered = fuse_perform_write(iocb, mapping, from, + iocb->ki_pos); if (written_buffered < 0) { err = written_buffered; goto out; } - endbyte = pos + written_buffered - 1; + endbyte = iocb->ki_pos + written_buffered - 1; - err = filemap_write_and_wait_range(file->f_mapping, pos, + err = filemap_write_and_wait_range(file->f_mapping, + iocb->ki_pos, endbyte); if (err) goto out; invalidate_mapping_pages(file->f_mapping, - pos >> PAGE_SHIFT, + iocb->ki_pos >> PAGE_SHIFT, endbyte >> PAGE_SHIFT); written += written_buffered; - iocb->ki_pos = pos + written_buffered; + iocb->ki_pos += written_buffered; } else { written = fuse_perform_write(iocb, mapping, from, iocb->ki_pos); - if (written >= 0) - iocb->ki_pos += written; } out: inode_unlock(inode); - if (written > 0) - written = generic_write_sync(iocb, written); - return written ? written : err; } From patchwork Wed May 24 06:38:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13253350 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9581BC7EE23 for ; Wed, 24 May 2023 06:40:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239740AbjEXGkk (ORCPT ); Wed, 24 May 2023 02:40:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239310AbjEXGjw (ORCPT ); Wed, 24 May 2023 02:39:52 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 360C210D3; Tue, 23 May 2023 23:38:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=I7nRLrC53ZpahuFKynf6W2iN4n5J8f6yAz18mg2al/A=; b=loGcfNQqoDcdpH3rz6JPxASSDR s0fquDmmeLd7u6HychBoJwA1I1ehMTaxvhR/hGW1eOWoplEmBpgawme3dl/bkliWeD81N5gRQagz2 75qmOSQmgExHJPNJTU+rjkO+l0lbgtXMcL8u7p4ZgdUF2l2Y0hzxdH1lzlTbL0Y5w4ExDTy4vlzgD J0IgvzxF1QbdE/vnF/UZY4vxDgPzRezXMnqD7bbE1yilua/MaPprSSMxo7eCBWXprIYSQCK0MrICO J/7RLbRylWjr2yXwriuVGNUk9p8tErXqthikzs4ueQbj9vMzKxNthea3PnELRedBPiZHrAIcamUza 8s/a+Ehw==; Received: from [2001:4bb8:188:23b2:cbb8:fcea:a637:5089] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q1i8y-00CVkq-1K; Wed, 24 May 2023 06:38:44 +0000 From: Christoph Hellwig To: Matthew Wilcox Cc: Jens Axboe , Xiubo Li , Ilya Dryomov , Alexander Viro , Christian Brauner , "Theodore Ts'o" , Jaegeuk Kim , Chao Yu , Miklos Szeredi , Andreas Gruenbacher , "Darrick J. Wong" , Trond Myklebust , Anna Schumaker , Damien Le Moal , Andrew Morton , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 11/11] fuse: drop redundant arguments to fuse_perform_write Date: Wed, 24 May 2023 08:38:10 +0200 Message-Id: <20230524063810.1595778-12-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524063810.1595778-1-hch@lst.de> References: <20230524063810.1595778-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org pos is always equal to iocb->ki_pos, and mapping is always equal to iocb->ki_filp->f_mapping. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Acked-by: Miklos Szeredi Reviewed-by: Hannes Reinecke --- fs/fuse/file.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 90d587a7bdf813..bf48aae49daf56 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1280,13 +1280,13 @@ static inline unsigned int fuse_wr_pages(loff_t pos, size_t len, max_pages); } -static ssize_t fuse_perform_write(struct kiocb *iocb, - struct address_space *mapping, - struct iov_iter *ii, loff_t pos) +static ssize_t fuse_perform_write(struct kiocb *iocb, struct iov_iter *ii) { + struct address_space *mapping = iocb->ki_filp->f_mapping; struct inode *inode = mapping->host; struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); + loff_t pos = iocb->ki_pos; int err = 0; ssize_t res = 0; @@ -1382,8 +1382,7 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) if (written < 0 || !iov_iter_count(from)) goto out; - written_buffered = fuse_perform_write(iocb, mapping, from, - iocb->ki_pos); + written_buffered = fuse_perform_write(iocb, from); if (written_buffered < 0) { err = written_buffered; goto out; @@ -1403,7 +1402,7 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) written += written_buffered; iocb->ki_pos += written_buffered; } else { - written = fuse_perform_write(iocb, mapping, from, iocb->ki_pos); + written = fuse_perform_write(iocb, from); } out: inode_unlock(inode);