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authorHugh Dickins <hugh@veritas.com>2006-01-06 00:10:55 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:24 -0800
commitc484d41042e6ccb88089ca41e3b3eed1bafdae21 (patch)
treec65e522698456899ed5ab058373d3ca2aad1650b /mm/swap_state.c
parent161599ff39a3c3cdea0a1be05ac53accd2c45cdd (diff)
downloadvexpress-lsk-c484d41042e6ccb88089ca41e3b3eed1bafdae21.tar.gz
[PATCH] mm: free_pages_and_swap_cache opt
Minor optimization (though it doesn't help in the PREEMPT case, severely constrained by small ZAP_BLOCK_SIZE). free_pages_and_swap_cache works in chunks of 16, calling release_pages which works in chunks of PAGEVEC_SIZE. But PAGEVEC_SIZE was dropped from 16 to 14 in 2.6.10, so we're now doing more spin_lock_irq'ing than necessary: use PAGEVEC_SIZE throughout. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/swap_state.c')
-rw-r--r--mm/swap_state.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 0df9a57b1de..fc2aecb70a9 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -14,6 +14,7 @@
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include <linux/backing-dev.h>
+#include <linux/pagevec.h>
#include <asm/pgtable.h>
@@ -272,12 +273,11 @@ void free_page_and_swap_cache(struct page *page)
*/
void free_pages_and_swap_cache(struct page **pages, int nr)
{
- int chunk = 16;
struct page **pagep = pages;
lru_add_drain();
while (nr) {
- int todo = min(chunk, nr);
+ int todo = min(nr, PAGEVEC_SIZE);
int i;
for (i = 0; i < todo; i++)