[PATCH 3/3] xfs: set WQ_SYSFS on all workqueues

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Set WQ_SYSFS on all workqueues that we create so that we have a means to
monitor cpu affinity and whatnot for background workers.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 fs/xfs/xfs_log.c       |    4 ++--
 fs/xfs/xfs_mru_cache.c |    2 +-
 fs/xfs/xfs_super.c     |   23 ++++++++++++++---------
 3 files changed, 17 insertions(+), 12 deletions(-)


diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 58699881c100..edb16843dff7 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1493,8 +1493,8 @@ xlog_alloc_log(
 	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_super->s_id);
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_HIGHPRI,
+			0, mp->m_super->s_id);
 	if (!log->l_ioend_workqueue)
 		goto out_free_iclog;
 
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index a06661dac5be..b6dab34e361d 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -294,7 +294,7 @@ int
 xfs_mru_cache_init(void)
 {
 	xfs_mru_reap_wq = alloc_workqueue("xfs_mru_cache",
-				WQ_MEM_RECLAIM|WQ_FREEZABLE, 1);
+				WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE, 1);
 	if (!xfs_mru_reap_wq)
 		return -ENOMEM;
 	return 0;
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index aed74a3fc787..ebe3eba2cbbc 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -495,33 +495,37 @@ xfs_init_mount_workqueues(
 	struct xfs_mount	*mp)
 {
 	mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s",
-			WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_super->s_id);
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE, 1,
+			mp->m_super->s_id);
 	if (!mp->m_buf_workqueue)
 		goto out;
 
 	mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
-			WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_super->s_id);
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0,
+			mp->m_super->s_id);
 	if (!mp->m_unwritten_workqueue)
 		goto out_destroy_buf;
 
 	mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s",
-			WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND,
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND,
 			0, mp->m_super->s_id);
 	if (!mp->m_cil_workqueue)
 		goto out_destroy_unwritten;
 
 	mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
-			WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_super->s_id);
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0,
+			mp->m_super->s_id);
 	if (!mp->m_reclaim_workqueue)
 		goto out_destroy_cil;
 
 	mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
-			WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_super->s_id);
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0,
+			mp->m_super->s_id);
 	if (!mp->m_eofblocks_workqueue)
 		goto out_destroy_reclaim;
 
-	mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", WQ_FREEZABLE, 0,
-					       mp->m_super->s_id);
+	mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s",
+			WQ_SYSFS | WQ_FREEZABLE, 0, mp->m_super->s_id);
 	if (!mp->m_sync_workqueue)
 		goto out_destroy_eofb;
 
@@ -2085,11 +2089,12 @@ xfs_init_workqueues(void)
 	 * max_active value for this workqueue.
 	 */
 	xfs_alloc_wq = alloc_workqueue("xfsalloc",
-			WQ_MEM_RECLAIM|WQ_FREEZABLE, 0);
+			WQ_SYSFS | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0);
 	if (!xfs_alloc_wq)
 		return -ENOMEM;
 
-	xfs_discard_wq = alloc_workqueue("xfsdiscard", WQ_UNBOUND, 0);
+	xfs_discard_wq = alloc_workqueue("xfsdiscard",
+			WQ_SYSFS | WQ_UNBOUND, 0);
 	if (!xfs_discard_wq)
 		goto out_free_alloc_wq;