The patch titled
Subject: proc/smaps: carefully handle migration entries
has been added to the -mm tree. Its filename is
proc-smaps-carefully-handle-migration-entries.patch
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From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
Subject: proc/smaps: carefully handle migration entries
Currently smaps reports migration entries as "swap", as result "swap" can
appears in shared mapping.
This patch converts migration entries into pages and handles them as usual.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/task_mmu.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff -puN fs/proc/task_mmu.c~proc-smaps-carefully-handle-migration-entries fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~proc-smaps-carefully-handle-migration-entries
+++ a/fs/proc/task_mmu.c
@@ -402,18 +402,20 @@ static void smaps_pte_entry(pte_t ptent,
{
struct mem_size_stats *mss = walk->private;
struct vm_area_struct *vma = mss->vma;
- struct page *page;
+ struct page *page = NULL;
int mapcount;
- if (is_swap_pte(ptent)) {
- mss->swap += ptent_size;
- return;
- }
+ if (pte_present(ptent)) {
+ page = vm_normal_page(vma, addr, ptent);
+ } else if (is_swap_pte(ptent)) {
+ swp_entry_t swpent = pte_to_swp_entry(ptent);
- if (!pte_present(ptent))
- return;
+ if (!non_swap_entry(swpent))
+ mss->swap += ptent_size;
+ else if (is_migration_entry(swpent))
+ page = migration_entry_to_page(swpent);
+ }
- page = vm_normal_page(vma, addr, ptent);
if (!page)
return;
_
Subject: Subject: proc/smaps: carefully handle migration entries
Patches currently in -mm which might be from khlebnikov@xxxxxxxxxx are
linux-next.patch
mm-remove-swap-token-code.patch
mm-vmscan-remove-lumpy-reclaim.patch
mm-vmscan-do-not-stall-on-writeback-during-memory-compaction.patch
mm-vmscan-remove-reclaim_mode_t.patch
mm-correctly-synchronize-rss-counters-at-exit-exec.patch
kernel-cgroup-push-rcu-read-locking-from-css_is_ancestor-to-callsite.patch
mm-memcg-count-pte-references-from-every-member-of-the-reclaimed-hierarchy.patch
mm-memcg-count-pte-references-from-every-member-of-the-reclaimed-hierarchy-fix.patch
mm-memcg-scanning_global_lru-means-mem_cgroup_disabled.patch
mm-memcg-move-reclaim_stat-into-lruvec.patch
mm-push-lru-index-into-shrink_active_list.patch
mm-push-lru-index-into-shrink_active_list-fix.patch
mm-mark-mm-inline-functions-as-__always_inline.patch
mm-remove-lru-type-checks-from-__isolate_lru_page.patch
mm-memcg-kill-mem_cgroup_lru_del.patch
mm-memcg-use-vm_swappiness-from-target-memory-cgroup.patch
proc-smaps-carefully-handle-migration-entries.patch
proc-smaps-show-amount-of-nonlinear-ptes-in-vma.patch
proc-smaps-show-amount-of-hwpoison-pages.patch
fork-call-complete_vfork_done-after-clearing-child_tid-and-flushing-rss-counters.patch
c-r-prctl-add-ability-to-set-new-mm_struct-exe_file-update-after-mm-num_exe_file_vmas-removal.patch
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