diff options
| author | Christoph Lameter <clameter@sgi.com> | 2006-06-30 01:55:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-30 11:25:35 -0700 |
| commit | bf02cf4b6cf931d060ad5c6ce9b960af6faefd2d (patch) | |
| tree | 9856eceb13b2c86c7748f4060bbb3b35008b7ee0 | |
| parent | 347ce434d57da80fd5809c0c836f206a50999c26 (diff) | |
| download | lwn-bf02cf4b6cf931d060ad5c6ce9b960af6faefd2d.tar.gz lwn-bf02cf4b6cf931d060ad5c6ce9b960af6faefd2d.zip | |
[PATCH] zoned vm counters: remove NR_FILE_MAPPED from scan control structure
We can now access the number of pages in a mapped state in an inexpensive way
in shrink_active_list. So drop the nr_mapped field from scan_control.
[akpm@osdl.org: bugfix]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | mm/vmscan.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index d2caf7471cf1..08bc54e80862 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -47,8 +47,6 @@ struct scan_control { /* Incremented by the number of inactive pages that were scanned */ unsigned long nr_scanned; - unsigned long nr_mapped; /* From page_state */ - /* This context's GFP mask */ gfp_t gfp_mask; @@ -744,7 +742,8 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone, * how much memory * is mapped. */ - mapped_ratio = (sc->nr_mapped * 100) / vm_total_pages; + mapped_ratio = (global_page_state(NR_FILE_MAPPED) * 100) / + vm_total_pages; /* * Now decide how much we really want to unmap some pages. The @@ -990,7 +989,6 @@ unsigned long try_to_free_pages(struct zone **zones, gfp_t gfp_mask) } for (priority = DEF_PRIORITY; priority >= 0; priority--) { - sc.nr_mapped = global_page_state(NR_FILE_MAPPED); sc.nr_scanned = 0; if (!priority) disable_swap_token(); @@ -1075,8 +1073,6 @@ loop_again: total_scanned = 0; nr_reclaimed = 0; sc.may_writepage = !laptop_mode; - sc.nr_mapped = global_page_state(NR_FILE_MAPPED); - inc_page_state(pageoutrun); for (i = 0; i < pgdat->nr_zones; i++) { @@ -1407,9 +1403,7 @@ unsigned long shrink_all_memory(unsigned long nr_pages) for (prio = DEF_PRIORITY; prio >= 0; prio--) { unsigned long nr_to_scan = nr_pages - ret; - sc.nr_mapped = global_page_state(NR_FILE_MAPPED); sc.nr_scanned = 0; - ret += shrink_all_zones(nr_to_scan, prio, pass, &sc); if (ret >= nr_pages) goto out; @@ -1548,7 +1542,6 @@ static int __zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order) struct scan_control sc = { .may_writepage = !!(zone_reclaim_mode & RECLAIM_WRITE), .may_swap = !!(zone_reclaim_mode & RECLAIM_SWAP), - .nr_mapped = global_page_state(NR_FILE_MAPPED), .swap_cluster_max = max_t(unsigned long, nr_pages, SWAP_CLUSTER_MAX), .gfp_mask = gfp_mask, |