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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 /include/linux/swap.h
parent8419c3181086c86664e8246bc997afc2e4ffba4f (diff)
[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 'include/linux/swap.h')
-rw-r--r--include/linux/swap.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 997d838f0e7..eb591eaad1b 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -198,7 +198,7 @@ extern int rw_swap_page_sync(int, swp_entry_t, struct page *);
extern struct address_space swapper_space;
#define total_swapcache_pages swapper_space.nrpages
extern void show_swap_cache_info(void);
-extern int add_to_swap(struct page *);
+extern int add_to_swap(struct page *, gfp_t);
extern void __delete_from_swap_cache(struct page *);
extern void delete_from_swap_cache(struct page *);
extern int move_to_swap_cache(struct page *, swp_entry_t);