Messages in this thread Patch in this message | | | Subject | [PATCH RFC 1/3] proc/smaps: carefully handle migration entries | From | Konstantin Khlebnikov <> | Date | Mon, 30 Apr 2012 15:29:03 +0400 |
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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@openvz.org> --- fs/proc/task_mmu.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index b073971..acee5fd 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -402,18 +402,20 @@ static void smaps_pte_entry(pte_t ptent, unsigned long addr, { 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;
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