From patchwork Mon Aug 9 06:12:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12425555 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 931F8C4320E for ; Mon, 9 Aug 2021 06:24:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E5C861056 for ; Mon, 9 Aug 2021 06:24:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233234AbhHIGZE (ORCPT ); Mon, 9 Aug 2021 02:25:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46686 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233136AbhHIGZD (ORCPT ); Mon, 9 Aug 2021 02:25:03 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A451C0613CF; Sun, 8 Aug 2021 23:24:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=XEbDP9G5QiiKlySv/o2oKL+XeM1XfcYbTX8eY8LVOBk=; b=R+kpG2M7/7Ddlly7BFWf9pYf36 x9l82cY77TB2Nppu8EyEY6sH4i8hwxdrpixOh5cQSBbOIOGwmpXR9N7qRVAUSZ/KXnI/v2OkKv66t UqVPp5KTgcWuTYgE/x714lAFjhhqpTGWrBguFiK//0r/PN2C9AyRdRS9BNZ4K6WBx8u8tYQSn1csS WyEZ++glpIjnAuPnv8WvZMAvhx8q80KIyGTzCv14L+H/5o/LBdVjOyBjc1OMVP8lrBvU3jHMhMYTy SkqYJM3Njht95ieczQxQ7X2XZxXBJUkm1tzT6V15/ulaAbp8xEdRch+4sEhNWI9qfrMgSgbuTqToB XpOH9WMQ==; Received: from [2a02:1205:5023:1f80:c068:bd3d:78b3:7d37] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mCygT-00Ah5e-4K; Mon, 09 Aug 2021 06:23:03 +0000 From: Christoph Hellwig To: "Darrick J. Wong" Cc: Dan Williams , Matthew Wilcox , Andreas Gruenbacher , Shiyang Ruan , linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, nvdimm@lists.linux.dev, cluster-devel@redhat.com Subject: [PATCH 13/30] iomap: switch iomap_file_buffered_write to use iomap_iter Date: Mon, 9 Aug 2021 08:12:27 +0200 Message-Id: <20210809061244.1196573-14-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210809061244.1196573-1-hch@lst.de> References: <20210809061244.1196573-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Switch iomap_file_buffered_write to use iomap_iter. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/iomap/buffered-io.c | 49 +++++++++++++++++++++--------------------- 1 file changed, 25 insertions(+), 24 deletions(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 9cda461887afad..4c7e82928cc546 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -726,13 +726,14 @@ static size_t iomap_write_end(struct inode *inode, loff_t pos, size_t len, return ret; } -static loff_t -iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data, - struct iomap *iomap, struct iomap *srcmap) +static loff_t iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i) { - struct iov_iter *i = data; - long status = 0; + struct iomap *srcmap = iomap_iter_srcmap(iter); + struct iomap *iomap = &iter->iomap; + loff_t length = iomap_length(iter); + loff_t pos = iter->pos; ssize_t written = 0; + long status = 0; do { struct page *page; @@ -758,18 +759,18 @@ iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data, break; } - status = iomap_write_begin(inode, pos, bytes, 0, &page, iomap, - srcmap); + status = iomap_write_begin(iter->inode, pos, bytes, 0, &page, + iomap, srcmap); if (unlikely(status)) break; - if (mapping_writably_mapped(inode->i_mapping)) + if (mapping_writably_mapped(iter->inode->i_mapping)) flush_dcache_page(page); copied = copy_page_from_iter_atomic(page, offset, bytes, i); - status = iomap_write_end(inode, pos, bytes, copied, page, iomap, - srcmap); + status = iomap_write_end(iter->inode, pos, bytes, copied, page, + iomap, srcmap); if (unlikely(copied != status)) iov_iter_revert(i, copied - status); @@ -790,29 +791,29 @@ iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data, written += status; length -= status; - balance_dirty_pages_ratelimited(inode->i_mapping); + balance_dirty_pages_ratelimited(iter->inode->i_mapping); } while (iov_iter_count(i) && length); return written ? written : status; } ssize_t -iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *iter, +iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i, const struct iomap_ops *ops) { - struct inode *inode = iocb->ki_filp->f_mapping->host; - loff_t pos = iocb->ki_pos, ret = 0, written = 0; - - while (iov_iter_count(iter)) { - ret = iomap_apply(inode, pos, iov_iter_count(iter), - IOMAP_WRITE, ops, iter, iomap_write_actor); - if (ret <= 0) - break; - pos += ret; - written += ret; - } + struct iomap_iter iter = { + .inode = iocb->ki_filp->f_mapping->host, + .pos = iocb->ki_pos, + .len = iov_iter_count(i), + .flags = IOMAP_WRITE, + }; + int ret; - return written ? written : ret; + while ((ret = iomap_iter(&iter, ops)) > 0) + iter.processed = iomap_write_iter(&iter, i); + if (iter.pos == iocb->ki_pos) + return ret; + return iter.pos - iocb->ki_pos; } EXPORT_SYMBOL_GPL(iomap_file_buffered_write);