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authorWang Long <wanglong19@meituan.com>2017-11-15 17:39:03 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 18:21:07 -0800
commit2bce774e8245e95db81872ec39522cde8b486fc8 (patch)
tree3eb19f827efed71affb9f51ffc537b72f4e4a4cc
parent0a7f682d04652fd91de0cbc1ea3d7aa1e45611c7 (diff)
downloadlinux-2bce774e8245e95db81872ec39522cde8b486fc8.tar.bz2
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>
-rw-r--r--include/linux/backing-dev.h2
-rw-r--r--mm/page-writeback.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 7360e79e9a2f..e54e7e0033eb 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -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;
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 05313f402ba8..8a1551154285 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -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))