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writeback: remove unused function parameter 

The parameter `struct bdi_writeback *wb` is not been used in the
function body.  Remove it.

Link: http://lkml.kernel.org/r/1509685485-15278-1-git-send-email-wanglong19@meituan.com
Signed-off-by: Wang Long <wanglong19@meituan.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Wang Long 2017-11-15 17:39:03 -08:00 committed by Linus Torvalds
parent 0a7f682d04
commit 2bce774e82
2 changed files with 3 additions and 3 deletions
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2
include/linux/backing-dev.h
View File

@ -93,7 +93,7 @@ extern void wb_writeout_inc(struct bdi_writeback *wb);
/*
* maximal error of a stat counter.
*/
static inline unsigned long wb_stat_error(struct bdi_writeback *wb)
static inline unsigned long wb_stat_error(void)
{
#ifdef CONFIG_SMP
return nr_cpu_ids * WB_STAT_BATCH;

4
mm/page-writeback.c
View File

@ -1545,7 +1545,7 @@ static inline void wb_dirty_limits(struct dirty_throttle_control *dtc)
* actually dirty; with m+n sitting in the percpu
* deltas.
*/
if (dtc->wb_thresh < 2 * wb_stat_error(wb)) {
if (dtc->wb_thresh < 2 * wb_stat_error()) {
wb_reclaimable = wb_stat_sum(wb, WB_RECLAIMABLE);
dtc->wb_dirty = wb_reclaimable + wb_stat_sum(wb, WB_WRITEBACK);
} else {
@ -1803,7 +1803,7 @@ pause:
* more page. However wb_dirty has accounting errors. So use
* the larger and more IO friendly wb_stat_error.
*/
if (sdtc->wb_dirty <= wb_stat_error(wb))
if (sdtc->wb_dirty <= wb_stat_error())
break;
if (fatal_signal_pending(current))