The patch titled
unevictable lru: add event counts to list scan
has been added to the -mm tree. Its filename is
shm_locked-pages-are-unevictable-add-event-counts-to-list-scan.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: unevictable lru: add event counts to list scan
From: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Fix to shm_locked-pages-are-unevictable.patch
More breaking up of the single unevictable lru/mlocked pages vm events
patch.
Add the vm events counting to the unevictable lru list scanning for
shm_unlock().
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Cc: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Kosaki Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmscan.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN mm/vmscan.c~shm_locked-pages-are-unevictable-add-event-counts-to-list-scan mm/vmscan.c
--- a/mm/vmscan.c~shm_locked-pages-are-unevictable-add-event-counts-to-list-scan
+++ a/mm/vmscan.c
@@ -2407,6 +2407,7 @@ retry:
__dec_zone_state(zone, NR_UNEVICTABLE);
list_move(&page->lru, &zone->lru[l].list);
__inc_zone_state(zone, NR_INACTIVE_ANON + l);
+ __count_vm_event(UNEVICTABLE_PGRESCUED);
} else {
/*
* rotate unevictable list
@@ -2440,6 +2441,7 @@ void scan_mapping_unevictable_pages(stru
while (next < end &&
pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE)) {
int i;
+ int pg_scanned = 0;
zone = NULL;
@@ -2448,6 +2450,7 @@ void scan_mapping_unevictable_pages(stru
pgoff_t page_index = page->index;
struct zone *pagezone = page_zone(page);
+ pg_scanned++;
if (page_index > next)
next = page_index;
next++;
@@ -2465,6 +2468,8 @@ void scan_mapping_unevictable_pages(stru
if (zone)
spin_unlock_irq(&zone->lru_lock);
pagevec_release(&pvec);
+
+ count_vm_events(UNEVICTABLE_PGSCANNED, pg_scanned);
}
}
_
Patches currently in -mm which might be from lee.schermerhorn@xxxxxx are
vmscan-use-an-indexed-array-for-lru-variables.patch
define-page_file_cache-function.patch
vmscan-split-lru-lists-into-anon-file-sets.patch
pageflag-helpers-for-configed-out-flags.patch
unevictable-lru-infrastructure.patch
unevictable-lru-infrastructure-nommu-fix.patch
unevictable-lru-infrastructure-remember-pages-active-state.patch
unevictable-lru-infrastructure-defer-vm-event-counting.patch
unevictable-infrastructure-lru-add-event-counting-with-statistics.patch
unevictable-lru-page-statistics.patch
ramfs-and-ram-disk-pages-are-unevictable.patch
shm_locked-pages-are-unevictable.patch
shm_locked-pages-are-unevictable-add-event-counts-to-list-scan.patch
mlock-mlocked-pages-are-unevictable.patch
doc-unevictable-lru-and-mlocked-pages-documentation.patch
mlock-downgrade-mmap-sem-while-populating-mlocked-regions.patch
mmap-handle-mlocked-pages-during-map-remap-unmap.patch
vmstat-mlocked-pages-statistics.patch
swap-cull-unevictable-pages-in-fault-path.patch
vmstat-unevictable-and-mlocked-pages-vm-events.patch
vmscan-unevictable-lru-scan-sysctl.patch
mlock-count-attempts-to-free-mlocked-page.patch
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