From patchwork Mon Jun 22 08:15:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Chinner X-Patchwork-Id: 11617239 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 A9E9D13B1 for ; Mon, 22 Jun 2020 08:16:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C4FE2068F for ; Mon, 22 Jun 2020 08:16:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725951AbgFVIQW (ORCPT ); Mon, 22 Jun 2020 04:16:22 -0400 Received: from mail109.syd.optusnet.com.au ([211.29.132.80]:44495 "EHLO mail109.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725991AbgFVIQP (ORCPT ); Mon, 22 Jun 2020 04:16:15 -0400 Received: from dread.disaster.area (pa49-180-124-177.pa.nsw.optusnet.com.au [49.180.124.177]) by mail109.syd.optusnet.com.au (Postfix) with ESMTPS id A7BC7D79917 for ; Mon, 22 Jun 2020 18:16:12 +1000 (AEST) Received: from discord.disaster.area ([192.168.253.110]) by dread.disaster.area with esmtp (Exim 4.92.3) (envelope-from ) id 1jnHcc-00045k-8O for linux-xfs@vger.kernel.org; Mon, 22 Jun 2020 18:16:06 +1000 Received: from dave by discord.disaster.area with local (Exim 4.93) (envelope-from ) id 1jnHcc-007d5P-08 for linux-xfs@vger.kernel.org; Mon, 22 Jun 2020 18:16:06 +1000 From: Dave Chinner To: linux-xfs@vger.kernel.org Subject: [PATCH 14/30] xfs: unwind log item error flagging Date: Mon, 22 Jun 2020 18:15:49 +1000 Message-Id: <20200622081605.1818434-15-david@fromorbit.com> X-Mailer: git-send-email 2.26.2.761.g0e0b3e54be In-Reply-To: <20200622081605.1818434-1-david@fromorbit.com> References: <20200622081605.1818434-1-david@fromorbit.com> MIME-Version: 1.0 X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=QIgWuTDL c=1 sm=1 tr=0 a=k3aV/LVJup6ZGWgigO6cSA==:117 a=k3aV/LVJup6ZGWgigO6cSA==:17 a=nTHF0DUjJn0A:10 a=20KFwNOVAAAA:8 a=yPCof4ZbAAAA:8 a=T7xEnian507jIie1A9MA:9 Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Dave Chinner When an buffer IO error occurs, we want to mark all the log items attached to the buffer as failed. Open code the error handling loop so that we can modify the flagging for the different types of objects directly and independently of each other. This also allows us to remove the ->iop_error method from the log item operations. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Darrick J. Wong --- fs/xfs/xfs_buf_item.c | 48 ++++++++++++----------------------------- fs/xfs/xfs_dquot_item.c | 18 ---------------- fs/xfs/xfs_inode_item.c | 18 ---------------- fs/xfs/xfs_trans.h | 1 - 4 files changed, 14 insertions(+), 71 deletions(-) diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index f80fc5bd3bff..d61f20b989cd 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -12,6 +12,7 @@ #include "xfs_bit.h" #include "xfs_mount.h" #include "xfs_trans.h" +#include "xfs_trans_priv.h" #include "xfs_buf_item.h" #include "xfs_inode.h" #include "xfs_inode_item.h" @@ -955,37 +956,6 @@ xfs_buf_item_relse( xfs_buf_item_free(bip); } -/* - * Invoke the error state callback for each log item affected by the failed I/O. - * - * If a metadata buffer write fails with a non-permanent error, the buffer is - * eventually resubmitted and so the completion callbacks are not run. The error - * state may need to be propagated to the log items attached to the buffer, - * however, so the next AIL push of the item knows hot to handle it correctly. - */ -STATIC void -xfs_buf_do_callbacks_fail( - struct xfs_buf *bp) -{ - struct xfs_ail *ailp = bp->b_mount->m_ail; - struct xfs_log_item *lip; - - /* - * Buffer log item errors are handled directly by xfs_buf_item_push() - * and xfs_buf_iodone_callback_error, and they have no IO error - * callbacks. Check only for items in b_li_list. - */ - if (list_empty(&bp->b_li_list)) - return; - - spin_lock(&ailp->ail_lock); - list_for_each_entry(lip, &bp->b_li_list, li_bio_list) { - if (lip->li_ops->iop_error) - lip->li_ops->iop_error(lip, bp); - } - spin_unlock(&ailp->ail_lock); -} - /* * Decide if we're going to retry the write after a failure, and prepare * the buffer for retrying the write. @@ -1165,6 +1135,7 @@ xfs_buf_inode_iodone( struct xfs_buf *bp) { if (bp->b_error) { + struct xfs_log_item *lip; int ret = xfs_buf_iodone_error(bp); if (ret == XBF_IOERROR_FINISH) @@ -1172,7 +1143,11 @@ xfs_buf_inode_iodone( if (ret == XBF_IOERROR_DONE) return; ASSERT(ret == XBF_IOERROR_FAIL); - xfs_buf_do_callbacks_fail(bp); + spin_lock(&bp->b_mount->m_ail->ail_lock); + list_for_each_entry(lip, &bp->b_li_list, li_bio_list) { + xfs_set_li_failed(lip, bp); + } + spin_unlock(&bp->b_mount->m_ail->ail_lock); xfs_buf_ioerror(bp, 0); xfs_buf_relse(bp); return; @@ -1193,6 +1168,7 @@ xfs_buf_dquot_iodone( struct xfs_buf *bp) { if (bp->b_error) { + struct xfs_log_item *lip; int ret = xfs_buf_iodone_error(bp); if (ret == XBF_IOERROR_FINISH) @@ -1200,7 +1176,11 @@ xfs_buf_dquot_iodone( if (ret == XBF_IOERROR_DONE) return; ASSERT(ret == XBF_IOERROR_FAIL); - xfs_buf_do_callbacks_fail(bp); + spin_lock(&bp->b_mount->m_ail->ail_lock); + list_for_each_entry(lip, &bp->b_li_list, li_bio_list) { + xfs_set_li_failed(lip, bp); + } + spin_unlock(&bp->b_mount->m_ail->ail_lock); xfs_buf_ioerror(bp, 0); xfs_buf_relse(bp); return; @@ -1232,7 +1212,7 @@ xfs_buf_iodone( if (ret == XBF_IOERROR_DONE) return; ASSERT(ret == XBF_IOERROR_FAIL); - xfs_buf_do_callbacks_fail(bp); + ASSERT(list_empty(&bp->b_li_list)); xfs_buf_ioerror(bp, 0); xfs_buf_relse(bp); return; diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c index 349c92d26570..d7e4de7151d7 100644 --- a/fs/xfs/xfs_dquot_item.c +++ b/fs/xfs/xfs_dquot_item.c @@ -113,23 +113,6 @@ xfs_qm_dqunpin_wait( wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); } -/* - * Callback used to mark a buffer with XFS_LI_FAILED when items in the buffer - * have been failed during writeback - * - * this informs the AIL that the dquot is already flush locked on the next push, - * and acquires a hold on the buffer to ensure that it isn't reclaimed before - * dirty data makes it to disk. - */ -STATIC void -xfs_dquot_item_error( - struct xfs_log_item *lip, - struct xfs_buf *bp) -{ - ASSERT(!completion_done(&DQUOT_ITEM(lip)->qli_dquot->q_flush)); - xfs_set_li_failed(lip, bp); -} - STATIC uint xfs_qm_dquot_logitem_push( struct xfs_log_item *lip, @@ -216,7 +199,6 @@ static const struct xfs_item_ops xfs_dquot_item_ops = { .iop_release = xfs_qm_dquot_logitem_release, .iop_committing = xfs_qm_dquot_logitem_committing, .iop_push = xfs_qm_dquot_logitem_push, - .iop_error = xfs_dquot_item_error }; /* diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 7049f2ae8d18..86c783dec2ba 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -464,23 +464,6 @@ xfs_inode_item_unpin( wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT); } -/* - * Callback used to mark a buffer with XFS_LI_FAILED when items in the buffer - * have been failed during writeback - * - * This informs the AIL that the inode is already flush locked on the next push, - * and acquires a hold on the buffer to ensure that it isn't reclaimed before - * dirty data makes it to disk. - */ -STATIC void -xfs_inode_item_error( - struct xfs_log_item *lip, - struct xfs_buf *bp) -{ - ASSERT(xfs_isiflocked(INODE_ITEM(lip)->ili_inode)); - xfs_set_li_failed(lip, bp); -} - STATIC uint xfs_inode_item_push( struct xfs_log_item *lip, @@ -619,7 +602,6 @@ static const struct xfs_item_ops xfs_inode_item_ops = { .iop_committed = xfs_inode_item_committed, .iop_push = xfs_inode_item_push, .iop_committing = xfs_inode_item_committing, - .iop_error = xfs_inode_item_error }; diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 99a9ab9cab25..b752501818d2 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -74,7 +74,6 @@ struct xfs_item_ops { void (*iop_committing)(struct xfs_log_item *, xfs_lsn_t commit_lsn); void (*iop_release)(struct xfs_log_item *); xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t); - void (*iop_error)(struct xfs_log_item *, xfs_buf_t *); int (*iop_recover)(struct xfs_log_item *lip, struct xfs_trans *tp); bool (*iop_match)(struct xfs_log_item *item, uint64_t id); };