bdi_start_background_writeback() currently takes @bdi and kicks the
root wb (bdi_writeback). In preparation for cgroup writeback support,
make it take wb instead.
This patch doesn't make any functional difference.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
---
fs/fs-writeback.c | 12 ++++++------
include/linux/backing-dev.h | 2 +-
mm/page-writeback.c | 4 ++--
3 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 6ab113b..c209ff1 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -244,23 +244,23 @@ void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
}
/**
- * bdi_start_background_writeback - start background writeback
- * @bdi: the backing device to write from
+ * wb_start_background_writeback - start background writeback
+ * @wb: bdi_writback to write from
*
* Description:
* This makes sure WB_SYNC_NONE background writeback happens. When
- * this function returns, it is only guaranteed that for given BDI
+ * this function returns, it is only guaranteed that for given wb
* some IO is happening if we are over background dirty threshold.
* Caller need not hold sb s_umount semaphore.
*/
-void bdi_start_background_writeback(struct backing_dev_info *bdi)
+void wb_start_background_writeback(struct bdi_writeback *wb)
{
/*
* We just wake up the flusher thread. It will perform background
* writeback as soon as there is no other work to do.
*/
- trace_writeback_wake_background(bdi);
- wb_wakeup(&bdi->wb);
+ trace_writeback_wake_background(wb->bdi);
+ wb_wakeup(wb);
}
/**
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 953fa01..4cdab7c 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -28,7 +28,7 @@ void bdi_unregister(struct backing_dev_info *bdi);
int __must_check bdi_setup_and_register(struct backing_dev_info *, char *, unsigned int);
void wb_start_writeback(struct bdi_writeback *wb, long nr_pages,
bool range_cyclic, enum wb_reason reason);
-void bdi_start_background_writeback(struct backing_dev_info *bdi);
+void wb_start_background_writeback(struct bdi_writeback *wb);
void wb_workfn(struct work_struct *work);
void wb_wakeup_delayed(struct bdi_writeback *wb);
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index b250ee2..4cf365c 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1450,7 +1450,7 @@ static void balance_dirty_pages(struct address_space *mapping,
}
if (unlikely(!writeback_in_progress(wb)))
- bdi_start_background_writeback(bdi);
+ wb_start_background_writeback(wb);
if (!strictlimit)
wb_dirty_limits(wb, dirty_thresh, background_thresh,
@@ -1583,7 +1583,7 @@ pause:
return;
if (nr_reclaimable > background_thresh)
- bdi_start_background_writeback(bdi);
+ wb_start_background_writeback(wb);
}
static DEFINE_PER_CPU(int, bdp_ratelimits);
--
2.1.0
--
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