aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/rmap.h
diff options
context:
space:
mode:
authorRik van Riel <riel@redhat.com>2005-11-28 16:44:07 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-28 17:42:25 -0500
commitf7b7fd8f3ebbb2810d6893295aa984acd0fd30db (patch)
tree01afc1edafc50a3c65ec8576c05c60da53d8d242 /include/linux/rmap.h
parenta93a117eaa0bec426d4671a49bfa96a6fdcd2ac9 (diff)
[PATCH] temporarily disable swap token on memory pressure
Some users (hi Zwane) have seen a problem when running a workload that eats nearly all of physical memory - th system does an OOM kill, even when there is still a lot of swap free. The problem appears to be a very big task that is holding the swap token, and the VM has a very hard time finding any other page in the system that is swappable. Instead of ignoring the swap token when sc->priority reaches 0, we could simply take the swap token away from the memory hog and make sure we don't give it back to the memory hog for a few seconds. This patch resolves the problem Zwane ran into. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/rmap.h')
-rw-r--r--include/linux/rmap.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index 35b30e6c8cf8..33261f1d2239 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -89,7 +89,7 @@ static inline void page_dup_rmap(struct page *page)
89/* 89/*
90 * Called from mm/vmscan.c to handle paging out 90 * Called from mm/vmscan.c to handle paging out
91 */ 91 */
92int page_referenced(struct page *, int is_locked, int ignore_token); 92int page_referenced(struct page *, int is_locked);
93int try_to_unmap(struct page *); 93int try_to_unmap(struct page *);
94 94
95/* 95/*
@@ -109,7 +109,7 @@ unsigned long page_address_in_vma(struct page *, struct vm_area_struct *);
109#define anon_vma_prepare(vma) (0) 109#define anon_vma_prepare(vma) (0)
110#define anon_vma_link(vma) do {} while (0) 110#define anon_vma_link(vma) do {} while (0)
111 111
112#define page_referenced(page,l,i) TestClearPageReferenced(page) 112#define page_referenced(page,l) TestClearPageReferenced(page)
113#define try_to_unmap(page) SWAP_FAIL 113#define try_to_unmap(page) SWAP_FAIL
114 114
115#endif /* CONFIG_MMU */ 115#endif /* CONFIG_MMU */