From patchwork Mon Sep 12 19:27:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Roesch X-Patchwork-Id: 12974058 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 EB0AEC6FA8B for ; Mon, 12 Sep 2022 19:28:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230079AbiILT2X (ORCPT ); Mon, 12 Sep 2022 15:28:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230081AbiILT2W (ORCPT ); Mon, 12 Sep 2022 15:28:22 -0400 Received: from mx0a-00082601.pphosted.com (mx0a-00082601.pphosted.com [67.231.145.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53A2645F5E for ; Mon, 12 Sep 2022 12:28:20 -0700 (PDT) Received: from pps.filterd (m0109334.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28CIEppk022502 for ; Mon, 12 Sep 2022 12:28:19 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=facebook; bh=v668+yucalsclBLGva7iP+bpxwNMZZM7NOxiVrIMvJs=; b=o+ANsbFDBaBM+3/6v0+TF/TCM6whzW6+JPujEiuO7iZaQhZCwogBAZkTI4JtugwViqfW E9sohXDvDdy/MSW7Z5GMPuO2uhe+gMwW1CxO6i4gZEPAvDWWOea6cWLmYbiaGjrvTebx bUUwZpcwcuGx5huZM8f/DnE/g+Hy789HlhQ= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com (PPS) with ESMTPS id 3jgsw4ccjw-12 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 12 Sep 2022 12:28:19 -0700 Received: from twshared15978.04.prn5.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:83::4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 12 Sep 2022 12:28:13 -0700 Received: by dev1180.prn1.facebook.com (Postfix, from userid 425415) id 1BA292085236; Mon, 12 Sep 2022 12:27:54 -0700 (PDT) From: Stefan Roesch To: , , , CC: , , , Subject: [PATCH v3 08/12] btrfs: make lock_and_cleanup_extent_if_need nowait compatible Date: Mon, 12 Sep 2022 12:27:48 -0700 Message-ID: <20220912192752.3785061-9-shr@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220912192752.3785061-1-shr@fb.com> References: <20220912192752.3785061-1-shr@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-ORIG-GUID: FqFts0akCDQNiMrQV3nDhISNB8VtqXZF X-Proofpoint-GUID: FqFts0akCDQNiMrQV3nDhISNB8VtqXZF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-12_12,2022-09-12_02,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This adds the nowait parameter to lock_and_cleanup_extent_if_need(). If the nowait parameter is specified we try to lock the extent in nowait mode. Signed-off-by: Stefan Roesch --- fs/btrfs/file.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index d4362ee7e09e..cb54ba631691 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1439,7 +1439,7 @@ static noinline int lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, size_t num_pages, loff_t pos, size_t write_bytes, - u64 *lockstart, u64 *lockend, + u64 *lockstart, u64 *lockend, bool nowait, struct extent_state **cached_state) { struct btrfs_fs_info *fs_info = inode->root->fs_info; @@ -1454,8 +1454,21 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, if (start_pos < inode->vfs_inode.i_size) { struct btrfs_ordered_extent *ordered; - lock_extent_bits(&inode->io_tree, start_pos, last_pos, + if (nowait) { + if (!try_lock_extent(&inode->io_tree, start_pos, last_pos)) { + for (i = 0; i < num_pages; i++) { + unlock_page(pages[i]); + put_page(pages[i]); + pages[i] = NULL; + } + + return -EAGAIN; + } + } else { + lock_extent_bits(&inode->io_tree, start_pos, last_pos, cached_state); + } + ordered = btrfs_lookup_ordered_range(inode, start_pos, last_pos - start_pos + 1); if (ordered && @@ -1754,7 +1767,7 @@ static noinline ssize_t btrfs_buffered_write(struct kiocb *iocb, extents_locked = lock_and_cleanup_extent_if_need( BTRFS_I(inode), pages, num_pages, pos, write_bytes, &lockstart, - &lockend, &cached_state); + &lockend, false, &cached_state); if (extents_locked < 0) { if (extents_locked == -EAGAIN) goto again;