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Commit ad4e38dd authored by Curt Wohlgemuth's avatar Curt Wohlgemuth Committed by Wu Fengguang
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writeback: send work item to queue_io, move_expired_inodes



Instead of sending ->older_than_this to queue_io() and
move_expired_inodes(), send the entire wb_writeback_work
structure.  There are other fields of a work item that are
useful in these routines and in tracepoints.

Acked-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarCurt Wohlgemuth <curtw@google.com>
Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
parent ece13ac3
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+8 −8
Original line number Diff line number Diff line
@@ -251,7 +251,7 @@ static bool inode_dirtied_after(struct inode *inode, unsigned long t)
 */
static int move_expired_inodes(struct list_head *delaying_queue,
			       struct list_head *dispatch_queue,
			       unsigned long *older_than_this)
			       struct wb_writeback_work *work)
{
	LIST_HEAD(tmp);
	struct list_head *pos, *node;
@@ -262,8 +262,8 @@ static int move_expired_inodes(struct list_head *delaying_queue,

	while (!list_empty(delaying_queue)) {
		inode = wb_inode(delaying_queue->prev);
		if (older_than_this &&
		    inode_dirtied_after(inode, *older_than_this))
		if (work->older_than_this &&
		    inode_dirtied_after(inode, *work->older_than_this))
			break;
		if (sb && sb != inode->i_sb)
			do_sb_sort = 1;
@@ -302,13 +302,13 @@ static int move_expired_inodes(struct list_head *delaying_queue,
 *                                           |
 *                                           +--> dequeue for IO
 */
static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
static void queue_io(struct bdi_writeback *wb, struct wb_writeback_work *work)
{
	int moved;
	assert_spin_locked(&wb->list_lock);
	list_splice_init(&wb->b_more_io, &wb->b_io);
	moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
	trace_writeback_queue_io(wb, older_than_this, moved);
	moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, work);
	trace_writeback_queue_io(wb, work, moved);
}

static int write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -651,7 +651,7 @@ long writeback_inodes_wb(struct bdi_writeback *wb, long nr_pages)

	spin_lock(&wb->list_lock);
	if (list_empty(&wb->b_io))
		queue_io(wb, NULL);
		queue_io(wb, &work);
	__writeback_inodes_wb(wb, &work);
	spin_unlock(&wb->list_lock);

@@ -745,7 +745,7 @@ static long wb_writeback(struct bdi_writeback *wb,

		trace_writeback_start(wb->bdi, work);
		if (list_empty(&wb->b_io))
			queue_io(wb, work->older_than_this);
			queue_io(wb, work);
		if (work->sb)
			progress = writeback_sb_inodes(work->sb, wb, work);
		else
+3 −2
Original line number Diff line number Diff line
@@ -157,9 +157,9 @@ DEFINE_WBC_EVENT(wbc_writepage);

TRACE_EVENT(writeback_queue_io,
	TP_PROTO(struct bdi_writeback *wb,
		 unsigned long *older_than_this,
		 struct wb_writeback_work *work,
		 int moved),
	TP_ARGS(wb, older_than_this, moved),
	TP_ARGS(wb, work, moved),
	TP_STRUCT__entry(
		__array(char,		name, 32)
		__field(unsigned long,	older)
@@ -167,6 +167,7 @@ TRACE_EVENT(writeback_queue_io,
		__field(int,		moved)
	),
	TP_fast_assign(
		unsigned long *older_than_this = work->older_than_this;
		strncpy(__entry->name, dev_name(wb->bdi->dev), 32);
		__entry->older	= older_than_this ?  *older_than_this : 0;
		__entry->age	= older_than_this ?