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mm: page_alloc: generalize the dirty balance reserve

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The dirty balance reserve that dirty throttling has to consider is
merely memory not available to userspace allocations.  There is nothing
writeback-specific about it.  Generalize the name so that it's reusable
outside of that context.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner
2016-01-14 15:20:15 -08:00
committed by Linus Torvalds
parent c20cd45eb0
commit a8d0143730
4 changed files with 18 additions and 24 deletions
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6
include/linux/mmzone.h
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@@ -356,10 +356,10 @@ struct zone {
struct per_cpu_pageset __percpu *pageset;
/*
* This is a per-zone reserve of pages that should not be
* considered dirtyable memory.
* This is a per-zone reserve of pages that are not available
* to userspace allocations.
*/
unsigned long dirty_balance_reserve;
unsigned long totalreserve_pages;
#ifndef CONFIG_SPARSEMEM
/*