The patch titled
memcg: add null check to page_cgroup_zoneinfo()
has been removed from the -mm tree. Its filename was
memcg-add-null-check-to-page_cgroup_zoneinfo.patch
This patch was dropped because an updated version will be merged
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: memcg: add null check to page_cgroup_zoneinfo()
From: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
If CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y, page_cgroup::mem_cgroup can be NULL.
Therefore null checking is better.
A later patch uses this function.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN mm/memcontrol.c~memcg-add-null-check-to-page_cgroup_zoneinfo mm/memcontrol.c
--- a/mm/memcontrol.c~memcg-add-null-check-to-page_cgroup_zoneinfo
+++ a/mm/memcontrol.c
@@ -231,6 +231,9 @@ page_cgroup_zoneinfo(struct page_cgroup
int nid = page_cgroup_nid(pc);
int zid = page_cgroup_zid(pc);
+ if (!mem)
+ return NULL;
+
return mem_cgroup_zoneinfo(mem, nid, zid);
}
_
Patches currently in -mm which might be from kosaki.motohiro@xxxxxxxxxxxxxx are
vmscan-evict-streaming-io-first.patch
linux-next.patch
arch-ia64-kernel-iosapicc-fix-warnings.patch
mm-report-the-pagesize-backing-a-vma-in-proc-pid-smaps.patch
mm-report-the-mmu-pagesize-in-proc-pid-smaps.patch
oom-fix-zone_scan_mutex-name.patch
mm-get-rid-of-pagevec_release_nonlru.patch
cleanup-get-rid-of-ifdef-config_migration.patch
mm-more-likely-reclaim-madv_sequential-mappings.patch
mm-make-page_lock_anon_vma-static.patch
memcg-reclaim-shouldnt-change-zone-recent_rotated-statistics.patch
mm-make-init_section_page_cgroup-static.patch
mm-make-maddr-__iomem.patch
mm-make-mem_cgroup_resize_limit-static.patch
mm-make-scan_all_zones_unevictable_pages-static.patch
mm-make-scan_zone_unevictable_pages-static.patch
mm-make-setup_per_zone_inactive_ratio-static.patch
mm-make-vread-and-vwrite-declaration.patch
vmscan-bail-out-of-direct-reclaim-after-swap_cluster_max-pages.patch
mm-kill-zone_is_near_oom.patch
softirq-introduce-statistics-for-softirq.patch
proc-export-statistics-for-softirq-to-proc.patch
proc-update-document-for-proc-softirqs-and-proc-stat.patch
memcg-new-force_empty-to-free-pages-under-group-fix.patch
memcg-new-force_empty-to-free-pages-under-group-fix-fix.patch
memcg-add-null-check-to-page_cgroup_zoneinfo.patch
memcg-add-inactive_anon_is_low.patch
memcg-add-mem_cgroup_zone_nr_pages.patch
memcg-add-zone_reclaim_stat.patch
memcg-remove-mem_cgroup_calc_reclaim.patch
memcg-show-inactive_ratio.patch
memcg-show-reclaim_stat.patch
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