From: Dave Chinner dchinner@redhat.com
mainline inclusion from mainline-v5.17-rc6 commit 8eda87211097195d96d7d12be37dd39d6a7c8b80 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I76JSK CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The AIL operates purely on log items, so it is a log centric subsystem. Divorce it from the xfs_mount and instead have it pass around xlog pointers.
Signed-off-by: Dave Chinner dchinner@redhat.com Reviewed-by: Chandan Babu R chandan.babu@oracle.com Reviewed-by: Darrick J. Wong djwong@kernel.org Signed-off-by: Darrick J. Wong djwong@kernel.org Signed-off-by: Long Li leo.lilong@huawei.com --- fs/xfs/xfs_trans.c | 2 +- fs/xfs/xfs_trans_ail.c | 26 +++++++++++++------------- fs/xfs/xfs_trans_priv.h | 3 ++- 3 files changed, 16 insertions(+), 15 deletions(-)
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 2832e49cc5d2..23cddfec03ef 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -776,7 +776,7 @@ xfs_trans_committed_bulk( * object into the AIL as we are in a shutdown situation. */ if (aborted) { - ASSERT(xfs_is_shutdown(ailp->ail_mount)); + ASSERT(xlog_is_shutdown(ailp->ail_log)); if (lip->li_ops->iop_unpin) lip->li_ops->iop_unpin(lip, 1); continue; diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index 1b52952097c1..c2ccb98c7bcd 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -398,7 +398,7 @@ xfsaild_push_item( * If log item pinning is enabled, skip the push and track the item as * pinned. This can help induce head-behind-tail conditions. */ - if (XFS_TEST_ERROR(false, ailp->ail_mount, XFS_ERRTAG_LOG_ITEM_PIN)) + if (XFS_TEST_ERROR(false, ailp->ail_log->l_mp, XFS_ERRTAG_LOG_ITEM_PIN)) return XFS_ITEM_PINNED;
/* @@ -418,7 +418,7 @@ static long xfsaild_push( struct xfs_ail *ailp) { - xfs_mount_t *mp = ailp->ail_mount; + struct xfs_mount *mp = ailp->ail_log->l_mp; struct xfs_ail_cursor cur; struct xfs_log_item *lip; xfs_lsn_t lsn; @@ -443,7 +443,7 @@ xfsaild_push( ailp->ail_log_flush = 0;
XFS_STATS_INC(mp, xs_push_ail_flush); - xlog_cil_flush(mp->m_log); + xlog_cil_flush(ailp->ail_log); }
spin_lock(&ailp->ail_lock); @@ -632,7 +632,7 @@ xfsaild( * opportunity to release such buffers from the queue. */ ASSERT(list_empty(&ailp->ail_buf_list) || - xfs_is_shutdown(ailp->ail_mount)); + xlog_is_shutdown(ailp->ail_log)); xfs_buf_delwri_cancel(&ailp->ail_buf_list); break; } @@ -695,7 +695,7 @@ xfs_ail_push( struct xfs_log_item *lip;
lip = xfs_ail_min(ailp); - if (!lip || xfs_is_shutdown(ailp->ail_mount) || + if (!lip || xlog_is_shutdown(ailp->ail_log) || XFS_LSN_CMP(threshold_lsn, ailp->ail_target) <= 0) return;
@@ -751,7 +751,7 @@ xfs_ail_update_finish( struct xfs_ail *ailp, xfs_lsn_t old_lsn) __releases(ailp->ail_lock) { - struct xfs_mount *mp = ailp->ail_mount; + struct xlog *log = ailp->ail_log;
/* if the tail lsn hasn't changed, don't do updates or wakeups. */ if (!old_lsn || old_lsn == __xfs_ail_min_lsn(ailp)) { @@ -759,13 +759,13 @@ xfs_ail_update_finish( return; }
- if (!xfs_is_shutdown(mp)) - xlog_assign_tail_lsn_locked(mp); + if (!xlog_is_shutdown(log)) + xlog_assign_tail_lsn_locked(log->l_mp);
if (list_empty(&ailp->ail_head)) wake_up_all(&ailp->ail_empty); spin_unlock(&ailp->ail_lock); - xfs_log_space_wake(mp); + xfs_log_space_wake(log->l_mp); }
/* @@ -873,13 +873,13 @@ xfs_trans_ail_delete( int shutdown_type) { struct xfs_ail *ailp = lip->li_ailp; - struct xfs_mount *mp = ailp->ail_mount; + struct xfs_mount *mp = ailp->ail_log->l_mp; xfs_lsn_t tail_lsn;
spin_lock(&ailp->ail_lock); if (!test_bit(XFS_LI_IN_AIL, &lip->li_flags)) { spin_unlock(&ailp->ail_lock); - if (shutdown_type && !xfs_is_shutdown(mp)) { + if (shutdown_type && !xlog_is_shutdown(ailp->ail_log)) { xfs_alert_tag(mp, XFS_PTAG_AILDELETE, "%s: attempting to delete a log item that is not in the AIL", __func__); @@ -904,7 +904,7 @@ xfs_trans_ail_init( if (!ailp) return -ENOMEM;
- ailp->ail_mount = mp; + ailp->ail_log = mp->m_log; INIT_LIST_HEAD(&ailp->ail_head); INIT_LIST_HEAD(&ailp->ail_cursors); spin_lock_init(&ailp->ail_lock); @@ -912,7 +912,7 @@ xfs_trans_ail_init( init_waitqueue_head(&ailp->ail_empty);
ailp->ail_task = kthread_run(xfsaild, ailp, "xfsaild/%s", - ailp->ail_mount->m_super->s_id); + mp->m_super->s_id); if (IS_ERR(ailp->ail_task)) goto out_free_ailp;
diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h index 3004aeac9110..f0d79a9050ba 100644 --- a/fs/xfs/xfs_trans_priv.h +++ b/fs/xfs/xfs_trans_priv.h @@ -6,6 +6,7 @@ #ifndef __XFS_TRANS_PRIV_H__ #define __XFS_TRANS_PRIV_H__
+struct xlog; struct xfs_log_item; struct xfs_mount; struct xfs_trans; @@ -50,7 +51,7 @@ struct xfs_ail_cursor { * Eventually we need to drive the locking in here as well. */ struct xfs_ail { - struct xfs_mount *ail_mount; + struct xlog *ail_log; struct task_struct *ail_task; struct list_head ail_head; xfs_lsn_t ail_target;