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fs: kill 'nr_pages' argument from wakeup_flusher_threads()

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Everybody is passing in 0 now, let's get rid of the argument.

Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2017-09-20 08:58:25 -06:00
parent bc48f001de
commit 9ba4b2dfaf
4 changed files with 7 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

9
fs/fs-writeback.c
View file

@ -1947,12 +1947,12 @@ void wb_workfn(struct work_struct *work)
} }
/* /*
* Start writeback of `nr_pages' pages. If `nr_pages' is zero, write back * Wakeup the flusher threads to start writeback of all currently dirty pages
* the whole world.
*/ */
void wakeup_flusher_threads(long nr_pages, enum wb_reason reason) void wakeup_flusher_threads(enum wb_reason reason)
{ {
struct backing_dev_info *bdi; struct backing_dev_info *bdi;
long nr_pages;
/* /*
* If we are expecting writeback progress we must submit plugged IO. * If we are expecting writeback progress we must submit plugged IO.
@ -1960,8 +1960,7 @@ void wakeup_flusher_threads(long nr_pages, enum wb_reason reason)
if (blk_needs_flush_plug(current)) if (blk_needs_flush_plug(current))
blk_schedule_flush_plug(current); blk_schedule_flush_plug(current);
if (!nr_pages) nr_pages = get_nr_dirty_pages();
nr_pages = get_nr_dirty_pages();
rcu_read_lock(); rcu_read_lock();
list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) { list_for_each_entry_rcu(bdi, &bdi_list, bdi_list) {

2
fs/sync.c
View file

@ -108,7 +108,7 @@ SYSCALL_DEFINE0(sync)
{ {
int nowait = 0, wait = 1; int nowait = 0, wait = 1;
wakeup_flusher_threads(0, WB_REASON_SYNC); wakeup_flusher_threads(WB_REASON_SYNC);
iterate_supers(sync_inodes_one_sb, NULL); iterate_supers(sync_inodes_one_sb, NULL);
iterate_supers(sync_fs_one_sb, &nowait); iterate_supers(sync_fs_one_sb, &nowait);
iterate_supers(sync_fs_one_sb, &wait); iterate_supers(sync_fs_one_sb, &wait);

2
include/linux/writeback.h
View file

@ -189,7 +189,7 @@ bool try_to_writeback_inodes_sb(struct super_block *, enum wb_reason reason);
bool try_to_writeback_inodes_sb_nr(struct super_block *, unsigned long nr, bool try_to_writeback_inodes_sb_nr(struct super_block *, unsigned long nr,
enum wb_reason reason); enum wb_reason reason);
void sync_inodes_sb(struct super_block *); void sync_inodes_sb(struct super_block *);
void wakeup_flusher_threads(long nr_pages, enum wb_reason reason); void wakeup_flusher_threads(enum wb_reason reason);
void inode_wait_for_writeback(struct inode *inode); void inode_wait_for_writeback(struct inode *inode);
/* writeback.h requires fs.h; it, too, is not included from here. */ /* writeback.h requires fs.h; it, too, is not included from here. */

2
mm/vmscan.c
View file

@ -1867,7 +1867,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
* also allow kswapd to start writing pages during reclaim. * also allow kswapd to start writing pages during reclaim.
*/ */
if (stat.nr_unqueued_dirty == nr_taken) { if (stat.nr_unqueued_dirty == nr_taken) {
wakeup_flusher_threads(0, WB_REASON_VMSCAN); wakeup_flusher_threads(WB_REASON_VMSCAN);
set_bit(PGDAT_DIRTY, &pgdat->flags); set_bit(PGDAT_DIRTY, &pgdat->flags);
} }