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authorChristoph Lameter <clameter@sgi.com>2006-01-08 01:00:53 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-08 20:12:42 -0800
commit1480a540c98525640174a7eadd712378fcd6fd63 (patch)
tree28f2cc0aa819ff0aed30dd85bb16177d4a73002b /mm/vmscan.c
parent8419c3181086c86664e8246bc997afc2e4ffba4f (diff)
downloadop-kernel-dev-1480a540c98525640174a7eadd712378fcd6fd63.zip
op-kernel-dev-1480a540c98525640174a7eadd712378fcd6fd63.tar.gz
[PATCH] SwapMig: add_to_swap() avoid atomic allocations
Add gfp_mask to add_to_swap add_to_swap does allocations with GFP_ATOMIC in order not to interfere with swapping. During migration we may have use add_to_swap extensively which may lead to out of memory errors. This patch makes add_to_swap take a parameter that specifies the gfp mask. The page migration code can then make add_to_swap use GFP_KERNEL. Signed-off-by: Hirokazu Takahashi <taka@valinux.co.jp> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index daed4a7..5393b093 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -458,7 +458,7 @@ static int shrink_list(struct list_head *page_list, struct scan_control *sc)
* Try to allocate it some swap space here.
*/
if (PageAnon(page) && !PageSwapCache(page)) {
- if (!add_to_swap(page))
+ if (!add_to_swap(page, GFP_ATOMIC))
goto activate_locked;
}
#endif /* CONFIG_SWAP */
@@ -715,7 +715,7 @@ redo:
}
if (PageAnon(page) && !PageSwapCache(page)) {
- if (!add_to_swap(page)) {
+ if (!add_to_swap(page, GFP_KERNEL)) {
unlock_page(page);
list_move(&page->lru, &failed);
nr_failed++;
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