Subject: + mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory.patch added to -mm tree
To: hannes@xxxxxxxxxxx,minchan@xxxxxxxxxx,psz@xxxxxxxxxxxxxxxxx,riel@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 29 Jul 2013 12:59:56 -0700
The patch titled
Subject: mm: revert "page-writeback.c: subtract min_free_kbytes from dirtyable memory"
has been added to the -mm tree. Its filename is
mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory.patch
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From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: revert "page-writeback.c: subtract min_free_kbytes from dirtyable memory"
This reverts 75f7ad8e043. It was the result of a problem observed with a
3.2 kernel and merged in 3.9, while the issue had been resolved upstream
in 3.3 (ab8fabd mm: exclude reserved pages from dirtyable memory).
The "reserved pages" are a superset of min_free_kbytes, thus this change
is redundant and confusing. Revert it.
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Paul Szabo <psz@xxxxxxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page-writeback.c | 3 ---
1 file changed, 3 deletions(-)
diff -puN mm/page-writeback.c~mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory mm/page-writeback.c
--- a/mm/page-writeback.c~mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory
+++ a/mm/page-writeback.c
@@ -241,9 +241,6 @@ static unsigned long global_dirtyable_me
if (!vm_highmem_is_dirtyable)
x -= highmem_dirtyable_memory(x);
- /* Subtract min_free_kbytes */
- x -= min_t(unsigned long, x, min_free_kbytes >> (PAGE_SHIFT - 10));
-
return x + 1; /* Ensure that we never return 0 */
}
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
vmpressure-change-vmpressure-sr_lock-to-spinlock.patch
vmpressure-do-not-check-for-pending-work-to-prevent-from-new-work.patch
vmpressure-make-sure-there-are-no-events-queued-after-memcg-is-offlined.patch
mm-kill-one-if-loop-in-__free_pages_bootmem.patch
mm-vmscan-fix-numa-reclaim-balance-problem-in-kswapd.patch
mm-page_alloc-rearrange-watermark-checking-in-get_page_from_freelist.patch
mm-page_alloc-fair-zone-allocator-policy.patch
mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory.patch
swap-add-a-simple-detector-for-inappropriate-swapin-readahead-fix.patch
debugging-keep-track-of-page-owners-fix-2-fix-fix-fix.patch
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