From 72457c0a05ed06f978d3a8a7c9d5ad527db88b4c Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Wed, 11 Sep 2013 14:20:49 -0700 Subject: [PATCH] mm: revert "page-writeback.c: subtract min_free_kbytes from dirtyable memory" This reverts commit 75f7ad8e043d. 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 (commit ab8fabd46f81: "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 Cc: Paul Szabo Cc: Rik van Riel Acked-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page-writeback.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 3f0c895c71fe..d374b29296dd 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -241,9 +241,6 @@ static unsigned long global_dirtyable_memory(void) 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 */ } -- 2.20.1