From patchwork Mon Mar 16 14:42:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11440509 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 77B2A92A for ; Mon, 16 Mar 2020 14:49:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4C5ED21707 for ; Mon, 16 Mar 2020 14:49:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="gektYv25" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731582AbgCPOtL (ORCPT ); Mon, 16 Mar 2020 10:49:11 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:57432 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731549AbgCPOtL (ORCPT ); Mon, 16 Mar 2020 10:49:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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=fo8/2wTa5CtmtlPQtM7qWjKZ+Bcm2Uvtz3QS4+jJFi0=; b=gektYv259R5TYi7yZ1cnHOw/cn 1BVsuIqo8DUEni1/q1h5Diqj+X3D05m9wZYJiU+pUlUu8LWLBJEMrQaCTzn9zrqixqZkmiq2907wJ Qx54N6VDNQQKHI19xDKebOn8KWjUVq0TN2ABleoYVKss0n4sfORpreCr7AjbUYVWQZ423oFkheyCr S3+IPvkX3Aj7xmytO8Sh6C3YMqzwDsGVfU9tOGWVdbVYarxMbHkMLOGxIplGGnBB9ACXoeOKuQ+6M gk7iIzq3ajuzD+XunCC9LIy4wH2WwOIo5qBZjMiOquqzBSVZQ9zstHE+P3jgEGztXb+5inEbFjl9S HLpHeCbA==; Received: from 089144202225.atnat0011.highway.a1.net ([89.144.202.225] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jDr3H-0007BQ-7f; Mon, 16 Mar 2020 14:49:11 +0000 From: Christoph Hellwig To: linux-xfs@vger.kernel.org Cc: Dave Chinner Subject: [PATCH 02/14] xfs: factor out a xlog_wait_on_iclog helper Date: Mon, 16 Mar 2020 15:42:21 +0100 Message-Id: <20200316144233.900390-3-hch@lst.de> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200316144233.900390-1-hch@lst.de> References: <20200316144233.900390-1-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 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Factor out the shared code to wait for a log force into a new helper. This helper uses the XLOG_FORCED_SHUTDOWN check previous only used by the unmount code over the equivalent iclog ioerror state used by the other two functions. There is a slight behavior change in that the force of the unmount record is now accounted in the log force statistics. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Reviewed-by: Brian Foster --- fs/xfs/xfs_log.c | 76 ++++++++++++++++++++---------------------------- 1 file changed, 31 insertions(+), 45 deletions(-) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 0986983ef6b5..955df2902c2c 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -859,6 +859,31 @@ xfs_log_mount_cancel( xfs_log_unmount(mp); } +/* + * Wait for the iclog to be written disk, or return an error if the log has been + * shut down. + */ +static int +xlog_wait_on_iclog( + struct xlog_in_core *iclog) + __releases(iclog->ic_log->l_icloglock) +{ + struct xlog *log = iclog->ic_log; + + if (!XLOG_FORCED_SHUTDOWN(log) && + iclog->ic_state != XLOG_STATE_ACTIVE && + iclog->ic_state != XLOG_STATE_DIRTY) { + XFS_STATS_INC(log->l_mp, xs_log_force_sleep); + xlog_wait(&iclog->ic_force_wait, &log->l_icloglock); + } else { + spin_unlock(&log->l_icloglock); + } + + if (XLOG_FORCED_SHUTDOWN(log)) + return -EIO; + return 0; +} + /* * Final log writes as part of unmount. * @@ -926,18 +951,7 @@ xfs_log_write_unmount_record( atomic_inc(&iclog->ic_refcnt); xlog_state_want_sync(log, iclog); error = xlog_state_release_iclog(log, iclog); - switch (iclog->ic_state) { - default: - if (!XLOG_FORCED_SHUTDOWN(log)) { - xlog_wait(&iclog->ic_force_wait, &log->l_icloglock); - break; - } - /* fall through */ - case XLOG_STATE_ACTIVE: - case XLOG_STATE_DIRTY: - spin_unlock(&log->l_icloglock); - break; - } + xlog_wait_on_iclog(iclog); if (tic) { trace_xfs_log_umount_write(log, tic); @@ -3230,9 +3244,6 @@ xfs_log_force( * previous iclog and go to sleep. */ iclog = iclog->ic_prev; - if (iclog->ic_state == XLOG_STATE_ACTIVE || - iclog->ic_state == XLOG_STATE_DIRTY) - goto out_unlock; } else if (iclog->ic_state == XLOG_STATE_ACTIVE) { if (atomic_read(&iclog->ic_refcnt) == 0) { /* @@ -3248,8 +3259,7 @@ xfs_log_force( if (xlog_state_release_iclog(log, iclog)) goto out_error; - if (be64_to_cpu(iclog->ic_header.h_lsn) != lsn || - iclog->ic_state == XLOG_STATE_DIRTY) + if (be64_to_cpu(iclog->ic_header.h_lsn) != lsn) goto out_unlock; } else { /* @@ -3269,17 +3279,8 @@ xfs_log_force( ; } - if (!(flags & XFS_LOG_SYNC)) - goto out_unlock; - - if (iclog->ic_state == XLOG_STATE_IOERROR) - goto out_error; - XFS_STATS_INC(mp, xs_log_force_sleep); - xlog_wait(&iclog->ic_force_wait, &log->l_icloglock); - if (iclog->ic_state == XLOG_STATE_IOERROR) - return -EIO; - return 0; - + if (flags & XFS_LOG_SYNC) + return xlog_wait_on_iclog(iclog); out_unlock: spin_unlock(&log->l_icloglock); return 0; @@ -3310,9 +3311,6 @@ __xfs_log_force_lsn( goto out_unlock; } - if (iclog->ic_state == XLOG_STATE_DIRTY) - goto out_unlock; - if (iclog->ic_state == XLOG_STATE_ACTIVE) { /* * We sleep here if we haven't already slept (e.g. this is the @@ -3346,20 +3344,8 @@ __xfs_log_force_lsn( *log_flushed = 1; } - if (!(flags & XFS_LOG_SYNC) || - (iclog->ic_state == XLOG_STATE_ACTIVE || - iclog->ic_state == XLOG_STATE_DIRTY)) - goto out_unlock; - - if (iclog->ic_state == XLOG_STATE_IOERROR) - goto out_error; - - XFS_STATS_INC(mp, xs_log_force_sleep); - xlog_wait(&iclog->ic_force_wait, &log->l_icloglock); - if (iclog->ic_state == XLOG_STATE_IOERROR) - return -EIO; - return 0; - + if (flags & XFS_LOG_SYNC) + return xlog_wait_on_iclog(iclog); out_unlock: spin_unlock(&log->l_icloglock); return 0;