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authorHugh Dickins <hugh@veritas.com>2005-11-22 00:32:14 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-22 12:13:42 -0500
commit664beed0190fae687ac51295694004902ddeb18e (patch)
tree89a7c8d9d541fb678c567834cb758fc88b375d47 /mm/swap.c
parent1cdca61bf8537043edde8ef784ce1a1351361dac (diff)
[PATCH] unpaged: unifdefed PageCompound
It looks like snd_xxx is not the only nopage to be using PageReserved as a way of holding a high-order page together: which no longer works, but is masked by our failure to free from VM_RESERVED areas. We cannot fix that bug without first substituting another way to hold the high-order page together, while farming out the 0-order pages from within it. That's just what PageCompound is designed for, but it's been kept under CONFIG_HUGETLB_PAGE. Remove the #ifdefs: which saves some space (out- of-line put_page), doesn't slow down what most needs to be fast (already using hugetlb), and unifies the way we handle high-order pages. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/swap.c b/mm/swap.c
index d09cf7f03e76..73d351439ef6 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -34,8 +34,6 @@
34/* How many pages do we try to swap or page in/out together? */ 34/* How many pages do we try to swap or page in/out together? */
35int page_cluster; 35int page_cluster;
36 36
37#ifdef CONFIG_HUGETLB_PAGE
38
39void put_page(struct page *page) 37void put_page(struct page *page)
40{ 38{
41 if (unlikely(PageCompound(page))) { 39 if (unlikely(PageCompound(page))) {
@@ -52,7 +50,6 @@ void put_page(struct page *page)
52 __page_cache_release(page); 50 __page_cache_release(page);
53} 51}
54EXPORT_SYMBOL(put_page); 52EXPORT_SYMBOL(put_page);
55#endif
56 53
57/* 54/*
58 * Writeback is about to end against a page which has been marked for immediate 55 * Writeback is about to end against a page which has been marked for immediate