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[PATCH] mm: balance dirty pages

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Now that we can detect writers of shared mappings, throttle them.  Avoids OOM
by surprise.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Peter Zijlstra
2006-09-25 23:30:58 -07:00
committed by Linus Torvalds
parent d08b3851da
commit edc79b2a46
3 changed files with 14 additions and 2 deletions
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5
mm/memory.c
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@ -49,6 +49,7 @@
#include <linux/module.h>
#include <linux/delayacct.h>
#include <linux/init.h>
#include <linux/writeback.h>
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
@ -1571,7 +1572,7 @@ gotten:
unlock:
pte_unmap_unlock(page_table, ptl);
if (dirty_page) {
set_page_dirty(dirty_page);
set_page_dirty_balance(dirty_page);
put_page(dirty_page);
}
return ret;
@ -2218,7 +2219,7 @@ retry:
unlock:
pte_unmap_unlock(page_table, ptl);
if (dirty_page) {
set_page_dirty(dirty_page);
set_page_dirty_balance(dirty_page);
put_page(dirty_page);
}
return ret;