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| author | Hugh Dickins <hugh@veritas.com> | 2006-01-06 00:10:55 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:24 -0800 |
| commit | c484d41042e6ccb88089ca41e3b3eed1bafdae21 (patch) | |
| tree | c65e522698456899ed5ab058373d3ca2aad1650b | |
| parent | 161599ff39a3c3cdea0a1be05ac53accd2c45cdd (diff) | |
| download | op-kernel-dev-c484d41042e6ccb88089ca41e3b3eed1bafdae21.zip op-kernel-dev-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>
| -rw-r--r-- | mm/swap_state.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c index 0df9a57..fc2aecb 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++) |
