From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A517723E25B for ; Thu, 10 Jul 2025 07:36:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752132991; cv=none; b=Dwrt6Q8mbgSO+P0E+LX6vfimkQoqJRk/fJztDbigE4GSTdRMyZNN5ypDb+Bjjr7JfuLk5BXOGeLmOJcaw5CLjVthKgXSv1HxyHmPpZQ7dZWZ7BU2Dzb7rKuvvLb5+3HVCWC5haXDepDNeZ2VzbS8jlPEgmeBgNFB5rWnHEpPU4M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752132991; c=relaxed/simple; bh=GMlzRaxdgPmvNaWpauij4PKvNlwpIxfD/Me2XO52+XA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=d1Ld+IFYL+oZ2O38mniePOXzrMtKcfO0jr3nDA/yBrqFqukxOI7RoBzeCUU3bljweG9zkasAkJRcvCihcR+xb7NFU6KWGLoSoL6JiFFDwGjp/qw7753G6sXnnF7qQMwIYCm/k0rnFMHBjzUk/2DLIfpGcsnh9kRnvqHDyrdI9DA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LdnGQlBQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LdnGQlBQ" 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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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