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| author | Jens Axboe <axboe@kernel.dk> | 2017-09-28 11:28:02 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-10-03 08:38:17 -0600 |
| commit | 0ab29fd0accf6e5b6ef5dbe2e0335da6687ce60c (patch) | |
| tree | f76ff2360a128f87ff4bc4e76efe65a2d88738b8 /mm/page-writeback.c | |
| parent | 595043e5f9ef1d8263bd9fda215cade489227491 (diff) | |
| download | lwn-0ab29fd0accf6e5b6ef5dbe2e0335da6687ce60c.tar.gz lwn-0ab29fd0accf6e5b6ef5dbe2e0335da6687ce60c.zip | |
writeback: pass in '0' for nr_pages writeback in laptop mode
Laptop mode really wants to writeback the number of dirty
pages and inodes. Instead of calculating this in the caller,
just pass in 0 and let wakeup_flusher_threads() handle it.
Use the new wakeup_flusher_threads_bdi() instead of rolling
our own.
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Tested-by: Chris Mason <clm@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index dede53355123..8d1fc593bce8 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1980,23 +1980,8 @@ int dirty_writeback_centisecs_handler(struct ctl_table *table, int write, void laptop_mode_timer_fn(unsigned long data) { struct request_queue *q = (struct request_queue *)data; - int nr_pages = global_node_page_state(NR_FILE_DIRTY) + - global_node_page_state(NR_UNSTABLE_NFS); - struct bdi_writeback *wb; - /* - * We want to write everything out, not just down to the dirty - * threshold - */ - if (!bdi_has_dirty_io(q->backing_dev_info)) - return; - - rcu_read_lock(); - list_for_each_entry_rcu(wb, &q->backing_dev_info->wb_list, bdi_node) - if (wb_has_dirty_io(wb)) - wb_start_writeback(wb, nr_pages, - WB_REASON_LAPTOP_TIMER); - rcu_read_unlock(); + wakeup_flusher_threads_bdi(q->backing_dev_info, WB_REASON_LAPTOP_TIMER); } /* |