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authorMatthew Dobson <colpatch@us.ibm.com>2006-03-26 01:37:44 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:56:59 -0800
commit6e0678f394c7bd21bfa5d252b071a09e10e7a749 (patch)
tree45e9729c67b867821748414667dada0d36a8bd34 /mm
parent8219dd5710c1daec2d7a086eeeee5187decfde60 (diff)
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[PATCH] mempool: add page allocator
This will be used by the next patch in the series to replace duplicate mempool-backed page allocators in 2 places in the kernel. It is also likely that there will be more users in the future. Signed-off-by: Matthew Dobson <colpatch@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mempool.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/mm/mempool.c b/mm/mempool.c
index f71893ed354..45c0112ca7b 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -289,3 +289,21 @@ void mempool_free_slab(void *element, void *pool_data)
kmem_cache_free(mem, element);
}
EXPORT_SYMBOL(mempool_free_slab);
+
+/*
+ * A simple mempool-backed page allocator that allocates pages
+ * of the order specified by pool_data.
+ */
+void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data)
+{
+ int order = (int)(long)pool_data;
+ return alloc_pages(gfp_mask, order);
+}
+EXPORT_SYMBOL(mempool_alloc_pages);
+
+void mempool_free_pages(void *element, void *pool_data)
+{
+ int order = (int)(long)pool_data;
+ __free_pages(element, order);
+}
+EXPORT_SYMBOL(mempool_free_pages);