xfs: rename the blockgc workqueue

Since we're about to start using the blockgc workqueue to dispose of
inactivated inodes, strip the "block" prefix from the name; now it's
merely the general garbage collection (gc) workqueue.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>

Documentation/admin-guide/xfs.rst

@@ -522,7 +522,7 @@ and the short name of the data device.  They all can be found in:
 ================  ===========
   xfs_iwalk-$pid  Inode scans of the entire filesystem. Currently limited to
                   mount time quotacheck.
-  xfs-blockgc     Background garbage collection of disk space that have been
+  xfs-gc          Background garbage collection of disk space that have been
                   speculatively allocated beyond EOF or for staging copy on
                   write operations.
 ================  ===========

fs/xfs/xfs_icache.c

@@ -1335,7 +1335,7 @@ xfs_blockgc_queue(
 {
 	rcu_read_lock();
 	if (radix_tree_tagged(&pag->pag_ici_root, XFS_ICI_BLOCKGC_TAG))
-		queue_delayed_work(pag->pag_mount->m_blockgc_workqueue,
+		queue_delayed_work(pag->pag_mount->m_gc_workqueue,
 				   &pag->pag_blockgc_work,
 				   msecs_to_jiffies(xfs_blockgc_secs * 1000));
 	rcu_read_unlock();

fs/xfs/xfs_mount.h

@@ -93,7 +93,7 @@ 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_blockgc_workqueue;
+	struct workqueue_struct *m_gc_workqueue;
 	struct workqueue_struct	*m_sync_workqueue;
 
 	int			m_bsize;	/* fs logical block size */

fs/xfs/xfs_super.c

@@ -519,10 +519,10 @@ xfs_init_mount_workqueues(
 	if (!mp->m_reclaim_workqueue)
 		goto out_destroy_cil;
 
-	mp->m_blockgc_workqueue = alloc_workqueue("xfs-blockgc/%s",
+	mp->m_gc_workqueue = alloc_workqueue("xfs-gc/%s",
 			WQ_SYSFS | WQ_UNBOUND | WQ_FREEZABLE | WQ_MEM_RECLAIM,
 			0, mp->m_super->s_id);
-	if (!mp->m_blockgc_workqueue)
+	if (!mp->m_gc_workqueue)
 		goto out_destroy_reclaim;
 
 	mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s",
@@ -533,7 +533,7 @@ xfs_init_mount_workqueues(
 	return 0;
 
 out_destroy_eofb:
-	destroy_workqueue(mp->m_blockgc_workqueue);
+	destroy_workqueue(mp->m_gc_workqueue);
 out_destroy_reclaim:
 	destroy_workqueue(mp->m_reclaim_workqueue);
 out_destroy_cil:
@@ -551,7 +551,7 @@ xfs_destroy_mount_workqueues(
 	struct xfs_mount	*mp)
 {
 	destroy_workqueue(mp->m_sync_workqueue);
-	destroy_workqueue(mp->m_blockgc_workqueue);
+	destroy_workqueue(mp->m_gc_workqueue);
 	destroy_workqueue(mp->m_reclaim_workqueue);
 	destroy_workqueue(mp->m_cil_workqueue);
 	destroy_workqueue(mp->m_unwritten_workqueue);