Messages in this thread Patch in this message | | | From | Minchan Kim <> | Subject | [PATCH 2/6] mm: make shrink_page_list with pages work from multiple zones | Date | Mon, 22 Apr 2013 17:45:02 +0900 |
| |
Shrink_page_list expects all pages come from a same zone but it's too limited to use.
This patch removes the dependency so next patch can use shrink_page_list with pages from multiple zones.
Signed-off-by: Minchan Kim <minchan@kernel.org> --- mm/vmscan.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c index 6934f5b..82f4d6c 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -706,7 +706,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, goto keep; VM_BUG_ON(PageActive(page)); - VM_BUG_ON(page_zone(page) != zone); + if (zone) + VM_BUG_ON(page_zone(page) != zone); sc->nr_scanned++; @@ -952,7 +953,7 @@ keep: * back off and wait for congestion to clear because further reclaim * will encounter the same problem */ - if (nr_dirty && nr_dirty == nr_congested && global_reclaim(sc)) + if (nr_dirty && nr_dirty == nr_congested && global_reclaim(sc) && zone) zone_set_flag(zone, ZONE_CONGESTED); free_hot_cold_page_list(&free_pages, 1); -- 1.8.2
| |