diff options
| -rw-r--r-- | fs/fs-writeback.c | 41 |
1 files changed, 17 insertions, 24 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index f1042061eaad..424577152eb5 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -933,8 +933,18 @@ static void bdi_split_work_to_wbs(struct backing_dev_info *bdi, #endif /* CONFIG_CGROUP_WRITEBACK */ -static void wb_start_writeback(struct bdi_writeback *wb, long nr_pages, - enum wb_reason reason) +/* + * Add in the number of potentially dirty inodes, because each inode + * write can dirty pagecache in the underlying blockdev. + */ +static unsigned long get_nr_dirty_pages(void) +{ + return global_node_page_state(NR_FILE_DIRTY) + + global_node_page_state(NR_UNSTABLE_NFS) + + get_nr_dirty_inodes(); +} + +static void wb_start_writeback(struct bdi_writeback *wb, enum wb_reason reason) { struct wb_writeback_work *work; @@ -954,7 +964,7 @@ static void wb_start_writeback(struct bdi_writeback *wb, long nr_pages, } work->sync_mode = WB_SYNC_NONE; - work->nr_pages = nr_pages; + work->nr_pages = wb_split_bdi_pages(wb, get_nr_dirty_pages()); work->range_cyclic = 1; work->reason = reason; work->auto_free = 1; @@ -1814,17 +1824,6 @@ static struct wb_writeback_work *get_next_work_item(struct bdi_writeback *wb) return work; } -/* - * Add in the number of potentially dirty inodes, because each inode - * write can dirty pagecache in the underlying blockdev. - */ -static unsigned long get_nr_dirty_pages(void) -{ - return global_node_page_state(NR_FILE_DIRTY) + - global_node_page_state(NR_UNSTABLE_NFS) + - get_nr_dirty_inodes(); -} - static long wb_check_background_flush(struct bdi_writeback *wb) { if (wb_over_bg_thresh(wb)) { @@ -1951,7 +1950,7 @@ void wb_workfn(struct work_struct *work) * write back the whole world. */ static void __wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, - long nr_pages, enum wb_reason reason) + enum wb_reason reason) { struct bdi_writeback *wb; @@ -1959,17 +1958,14 @@ static void __wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, return; list_for_each_entry_rcu(wb, &bdi->wb_list, bdi_node) - wb_start_writeback(wb, wb_split_bdi_pages(wb, nr_pages), - reason); + wb_start_writeback(wb, reason); } void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, enum wb_reason reason) { - long nr_pages = get_nr_dirty_pages(); - rcu_read_lock(); - __wakeup_flusher_threads_bdi(bdi, nr_pages, reason); + __wakeup_flusher_threads_bdi(bdi, reason); rcu_read_unlock(); } @@ -1979,7 +1975,6 @@ void wakeup_flusher_threads_bdi(struct backing_dev_info *bdi, void wakeup_flusher_threads(enum wb_reason reason) { struct backing_dev_info *bdi; - long nr_pages; /* * If we are expecting writeback progress we must submit plugged IO. @@ -1987,11 +1982,9 @@ void wakeup_flusher_threads(enum wb_reason reason) if (blk_needs_flush_plug(current)) blk_schedule_flush_plug(current); - nr_pages = get_nr_dirty_pages(); - rcu_read_lock(); list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) - __wakeup_flusher_threads_bdi(bdi, nr_pages, reason); + __wakeup_flusher_threads_bdi(bdi, reason); rcu_read_unlock(); } |