[PATCH 14/20] xfs: move the log ioend workqueue to struct xlog

Christoph Hellwig
2019-05-23T17:41:33Z

Move the workqueue used for log I/O completions from struct xfs_mount
to struct xlog to keep it self contained in the log code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_log.c | 13 +++++++++++--
fs/xfs/xfs_log_priv.h | 1 +
fs/xfs/xfs_mount.h | 1 -
fs/xfs/xfs_super.c | 11 +----------
4 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 6ae51e0067f8..047cc0237352 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1531,11 +1531,19 @@ xlog_alloc_log(
*iclogp = log->l_iclog; /* complete ring */
log->l_iclog->ic_prev = prev_iclog; /* re-write 1st prev ptr */

+ log->l_ioend_workqueue = alloc_workqueue("xfs-log/%s",
+ WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_HIGHPRI, 0,
+ mp->m_fsname);
+ if (!log->l_ioend_workqueue)
+ goto out_free_iclog;
+
error = xlog_cil_init(log);
if (error)
- goto out_free_iclog;
+ goto out_destroy_workqueue;
return log;

+out_destroy_workqueue:
+ destroy_workqueue(log->l_ioend_workqueue);
out_free_iclog:
for (iclog = log->l_iclog; iclog; iclog = prev_iclog) {
prev_iclog = iclog->ic_next;
@@ -1732,7 +1740,7 @@ xlog_bio_end_io(
{
struct xlog_in_core *iclog = bio->bi_private;

- queue_work(iclog->ic_log->l_mp->m_log_workqueue,
+ queue_work(iclog->ic_log->l_ioend_workqueue,
&iclog->ic_end_io_work);
}

@@ -1981,6 +1989,7 @@ xlog_dealloc_log(
int i;

xlog_cil_destroy(log);
+ destroy_workqueue(log->l_ioend_workqueue);

/*
* Cycle all the iclogbuf locks to make sure all log IO completion
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index 062ee9c13039..e8acd4818539 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -354,6 +354,7 @@ struct xlog {
struct xfs_ail *l_ailp; /* AIL log is working with */
struct xfs_cil *l_cilp; /* CIL log is working with */
struct xfs_buftarg *l_targ; /* buftarg of log */
+ struct workqueue_struct *l_ioend_workqueue; /* for I/O completions */
struct delayed_work l_work; /* background flush work */
uint l_flags;
uint l_quotaoffs_flag; /* XFS_DQ_*, for QUOTAOFFs */
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index c81a5cd7c228..8d188155dca3 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -198,7 +198,6 @@ typedef struct xfs_mount {
struct workqueue_struct *m_unwritten_workqueue;
struct workqueue_struct *m_cil_workqueue;
struct workqueue_struct *m_reclaim_workqueue;
- struct workqueue_struct *m_log_workqueue;
struct workqueue_struct *m_eofblocks_workqueue;
struct workqueue_struct *m_sync_workqueue;

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index a14d11d78bd8..7cb0d2a01c41 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -840,16 +840,10 @@ xfs_init_mount_workqueues(
if (!mp->m_reclaim_workqueue)
goto out_destroy_cil;

- mp->m_log_workqueue = alloc_workqueue("xfs-log/%s",
- WQ_MEM_RECLAIM|WQ_FREEZABLE|WQ_HIGHPRI, 0,
- mp->m_fsname);
- if (!mp->m_log_workqueue)
- goto out_destroy_reclaim;
-
mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
if (!mp->m_eofblocks_workqueue)
- goto out_destroy_log;
+ goto out_destroy_reclaim;

mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", WQ_FREEZABLE, 0,
mp->m_fsname);
@@ -860,8 +854,6 @@ xfs_init_mount_workqueues(

out_destroy_eofb:
destroy_workqueue(mp->m_eofblocks_workqueue);
-out_destroy_log:
- destroy_workqueue(mp->m_log_workqueue);
out_destroy_reclaim:
destroy_workqueue(mp->m_reclaim_workqueue);
out_destroy_cil:
@@ -880,7 +872,6 @@ xfs_destroy_mount_workqueues(
{
destroy_workqueue(mp->m_sync_workqueue);
destroy_workqueue(mp->m_eofblocks_workqueue);
- destroy_workqueue(mp->m_log_workqueue);
destroy_workqueue(mp->m_reclaim_workqueue);
destroy_workqueue(mp->m_cil_workqueue);
destroy_workqueue(mp->m_unwritten_workqueue);
--
2.20.1