From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0BBCDC83F18 for ; Thu, 10 Jul 2025 07:36:35 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4bd69G4mh6z30MY; Thu, 10 Jul 2025 17:36:34 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2604:1380:4641:c500::1" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1752132994; cv=none; b=MYh7KTENAaRZ3B69lVL4ysACCzuT38HXR8Rh4+lckwXPsa8MKhWEpsaEmU3KZG5gEkTUHP+Mf2mbzVkxKnZSyyCHAPl6av4Qu0BgiJAttvkvr0YuuLFgZpxdRU3bimOtlHKRxWrNAzYlf8SvyAiN4EqufZLHyMpR5C/IRdS9CMBj/C6ivSZeaEFvcJNngFcL8lAnD15I4S6gwxyZomw0+RXLlU9wcNGHadL0Cx1Xl1Di9seL27s9MYSj7myb1tdmTUaqOibPc1djijwGY4mTXX5p+SuGO/A7EzBZiroKuC6riVPT0lX3dPJDIg4fvb4FFe9nEJFuR2mLWH7FspXqGQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1752132994; c=relaxed/relaxed; bh=D+lClq7/s6w840WXa+oot6gvJxolaiUqzeJLD5Hz8V8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=HsMV/cxXxae8tyQjOpN1tk8CCuAYcTJ5t5c0YsA/BCbysVUNWeo748J+bcu6ojhCbScn0eXvKoVj9C4xgQtNJ2MPMqvMsW+5QPUsCxc44+QXsjiy/vDtWCp1Ccetuy8AOMWdlMv9KYHLAKIWWU3B8HoDikvSR2dWWXmMuPyyPLcDpUv1uXq1oh4mqJY07qcUf3jAKNrSEGX3fFnqy8cgvAhNNLzUqhAXul8mMoL8yp09EIfH8Wuy7TtHrK0AOt5IXah4fQNelvMxpj4mkTc/2VLS53zSs+TZI1dOFHE7prqFbmOAJj5SLU3/PtwamQXvCOy5/0ZSU/09AAyd2MPgug== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LdnGQlBQ; dkim-atps=neutral; spf=pass (client-ip=2604:1380:4641:c500::1; helo=dfw.source.kernel.org; envelope-from=chao@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LdnGQlBQ; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2604:1380:4641:c500::1; helo=dfw.source.kernel.org; envelope-from=chao@kernel.org; receiver=lists.ozlabs.org) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4bd69G0PBVz2yMt for ; Thu, 10 Jul 2025 17:36:34 +1000 (AEST) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 843025C6BD8; Thu, 10 Jul 2025 07:36:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4448FC4CEE3; Thu, 10 Jul 2025 07:36:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752132991; bh=GMlzRaxdgPmvNaWpauij4PKvNlwpIxfD/Me2XO52+XA=; h=From:To:Cc:Subject:Date:From; b=LdnGQlBQ/PjAKADHhN9GqTbXiiwJoMbuB1Etc4dBbZOg5TULyRfBX/zWv+DeOIB52 BX2wB7XJ+DNRUoqyBfMK0ulwfVrlQ1v4Ul7lv9s1LczYOspq8PwISWwoA/sEysx6SI jdUw9REfMjctqRbeyD5suIdyIgV1JuSZ3w1ZTD7rKl8X7FVh11chPzcmXsOY5KS+jD xTfUQMgTIOxNK5c23Ui3bzPes0k2EDc2/JFBsvOey2IhnCpI/bRhv8QWYgkcNyv9oh l0bj5WlevUB6qrobgyHnJSA8LSowhs1Y4BsS3XBJYHjNej5p3elzXBUWpG1mSThX0B rlA0aPqCAl2Mw== From: Chao Yu To: xiang@kernel.org Cc: linux-erofs@lists.ozlabs.org, linux-kernel@vger.kernel.org, Yue Hu , Jeffle Xu , Sandeep Dhavale , Hongbo Li , Chao Yu Subject: [PATCH 1/2] erofs: allow readdir() to be interrupted Date: Thu, 10 Jul 2025 15:36:18 +0800 Message-ID: <20250710073619.4083422-1-chao@kernel.org> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog X-Mailing-List: linux-erofs@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In a quick slow device, readdir() may loop for long time in large directory, let's give a chance to allow it to be interrupted by userspace. Signed-off-by: Chao Yu --- fs/erofs/dir.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/erofs/dir.c b/fs/erofs/dir.c index 2fae209d0274..cff61c5a172b 100644 --- a/fs/erofs/dir.c +++ b/fs/erofs/dir.c @@ -58,6 +58,13 @@ static int erofs_readdir(struct file *f, struct dir_context *ctx) struct erofs_dirent *de; unsigned int nameoff, maxsize; + /* allow readdir() to be interrupted */ + if (fatal_signal_pending(current)) { + err = -ERESTARTSYS; + break; + } + cond_resched(); + de = erofs_bread(&buf, dbstart, true); if (IS_ERR(de)) { erofs_err(sb, "failed to readdir of logical block %llu of nid %llu", -- 2.49.0