From patchwork Thu Jun 1 14:59:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13263973 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 18999C7EE32 for ; Thu, 1 Jun 2023 15:00:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234862AbjFAPAa (ORCPT ); Thu, 1 Jun 2023 11:00:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234773AbjFAPAQ (ORCPT ); Thu, 1 Jun 2023 11:00:16 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 03E2EE79; Thu, 1 Jun 2023 07:59:47 -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=jbawnL+VYgZ1jYvLS7+9Ak42xWEPxAzs6GdcaAHW+Oo=; b=0BZzDPQ3/KufSUYyqGTALVJA2V F7rv14JM9wX0qT8r5amOenHBslv0fjcETpIu5tvR40H/oYXVXidoSXDEbUvv9yTTG2qe0Lf+Igy7f HD+JtG3isRXHu4DvwfnZsrKWS8xkVNLclC+yJ43H3SkOeA/QJSxsakoIaCP6h6L6lmtCnfzAIfo7q MSO/ZPrtPMcjfZTPmxCzu/7I3PuOlM3n9LEE6FniefdTtSWX2ump09XcCxnRMybWJBzYt0/AYJ/2w m+Nlo/Ah6heNGpn8kfdDCl3F6mewWlkTXMkW5it58UvPobqa7rsTZLZUws0CgGANnwpnXbwtLISqT v8s7ZO7A==; Received: from [2001:4bb8:182:6d06:eacb:c751:971:73eb] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1q4jm0-003w9a-1C; Thu, 01 Jun 2023 14:59:32 +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 10/12] fuse: update ki_pos in fuse_perform_write Date: Thu, 1 Jun 2023 16:59:02 +0200 Message-Id: <20230601145904.1385409-11-hch@lst.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230601145904.1385409-1-hch@lst.de> References: <20230601145904.1385409-1-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-fsdevel@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 --- fs/fuse/file.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 97d435874b14aa..d5902506cdcc65 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) @@ -1341,7 +1344,6 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) struct inode *inode = mapping->host; ssize_t err; struct fuse_conn *fc = get_fuse_conn(inode); - loff_t endbyte = 0; if (fc->writeback_cache) { /* Update size (EOF optimization) and mode (SUID clearing) */ @@ -1375,19 +1377,20 @@ 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; + loff_t pos, endbyte; + 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; + pos = iocb->ki_pos - written_buffered; + endbyte = iocb->ki_pos - 1; err = filemap_write_and_wait_range(file->f_mapping, pos, endbyte); @@ -1399,11 +1402,8 @@ static ssize_t fuse_cache_write_iter(struct kiocb *iocb, struct iov_iter *from) endbyte >> PAGE_SHIFT); written += written_buffered; - iocb->ki_pos = 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);