[PATCH v14 065/138] mm/writeback: Change __wb_writeout_inc() to __wb_writeout_add()

Matthew Wilcox (Oracle)
2021-07-15T04:30:04Z

Allow for accounting N pages at once instead of one page at a time.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
---
mm/page-writeback.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index f55f2ebdd9a9..e542ea37d605 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -562,12 +562,12 @@ static unsigned long wp_next_time(unsigned long cur_time)
return cur_time;
}

-static void wb_domain_writeout_inc(struct wb_domain *dom,
+static void wb_domain_writeout_add(struct wb_domain *dom,
struct fprop_local_percpu *completions,
- unsigned int max_prop_frac)
+ unsigned int max_prop_frac, long nr)
{
__fprop_add_percpu_max(&dom->completions, completions,
- max_prop_frac, 1);
+ max_prop_frac, nr);
/* First event after period switching was turned off? */
if (unlikely(!dom->period_time)) {
/*
@@ -585,18 +585,18 @@ static void wb_domain_writeout_inc(struct wb_domain *dom,
* Increment @wb's writeout completion count and the global writeout
* completion count. Called from test_clear_page_writeback().
*/
-static inline void __wb_writeout_inc(struct bdi_writeback *wb)
+static inline void __wb_writeout_add(struct bdi_writeback *wb, long nr)
{
struct wb_domain *cgdom;

- inc_wb_stat(wb, WB_WRITTEN);
- wb_domain_writeout_inc(&global_wb_domain, &wb->completions,
- wb->bdi->max_prop_frac);
+ wb_stat_mod(wb, WB_WRITTEN, nr);
+ wb_domain_writeout_add(&global_wb_domain, &wb->completions,
+ wb->bdi->max_prop_frac, nr);

cgdom = mem_cgroup_wb_domain(wb);
if (cgdom)
- wb_domain_writeout_inc(cgdom, wb_memcg_completions(wb),
- wb->bdi->max_prop_frac);
+ wb_domain_writeout_add(cgdom, wb_memcg_completions(wb),
+ wb->bdi->max_prop_frac, nr);
}

void wb_writeout_inc(struct bdi_writeback *wb)
@@ -604,7 +604,7 @@ void wb_writeout_inc(struct bdi_writeback *wb)
unsigned long flags;

local_irq_save(flags);
- __wb_writeout_inc(wb);
+ __wb_writeout_add(wb, 1);
local_irq_restore(flags);
}
EXPORT_SYMBOL_GPL(wb_writeout_inc);
@@ -2751,7 +2751,7 @@ int test_clear_page_writeback(struct page *page)
struct bdi_writeback *wb = inode_to_wb(inode);

dec_wb_stat(wb, WB_WRITEBACK);
- __wb_writeout_inc(wb);
+ __wb_writeout_add(wb, 1);
}
}

--
2.30.2