On Sun, Apr 09, 2017 at 08:08:29AM +0530, Anshuman Khandual wrote:
> It helps to provide page flag description along with the raw value in
> error paths during soft offline process. From sample experiments
>
> Before the patch:
>
> [ 132.317977] soft offline: 0x6100: migration failed 1, type 3ffff800008018
> [ 132.359057] soft offline: 0x7400: migration failed 1, type 3ffff800008018
>
> After the patch:
>
> [ 87.694325] soft offline: 0x5900: migration failed 1, type 3ffff800008018 (uptodate|dirty|head)
> [ 87.736273] soft offline: 0x6c00: migration failed 1, type 3ffff800008018 (uptodate|dirty|head)
>
> Signed-off-by: Anshuman Khandual <khandual@xxxxxxxxxxxxxxxxxx>
Looks good to me, thank you!
Acked-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
> ---
> mm/memory-failure.c | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/mm/memory-failure.c b/mm/memory-failure.c
> index 27f7210..fe64d77 100644
> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -1543,8 +1543,8 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags)
> if (ret == 1 && !PageLRU(page)) {
> /* Drop page reference which is from __get_any_page() */
> put_hwpoison_page(page);
> - pr_info("soft_offline: %#lx: unknown non LRU page type %lx\n",
> - pfn, page->flags);
> + pr_info("soft_offline: %#lx: unknown non LRU page type %lx (%pGp)\n",
> + pfn, page->flags, &page->flags);
> return -EIO;
> }
> }
> @@ -1585,8 +1585,8 @@ static int soft_offline_huge_page(struct page *page, int flags)
> ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL,
> MIGRATE_SYNC, MR_MEMORY_FAILURE);
> if (ret) {
> - pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
> - pfn, ret, page->flags);
> + pr_info("soft offline: %#lx: migration failed %d, type %lx (%pGp)\n",
> + pfn, ret, page->flags, &page->flags);
> /*
> * We know that soft_offline_huge_page() tries to migrate
> * only one hugepage pointed to by hpage, so we need not
> @@ -1677,14 +1677,14 @@ static int __soft_offline_page(struct page *page, int flags)
> if (!list_empty(&pagelist))
> putback_movable_pages(&pagelist);
>
> - pr_info("soft offline: %#lx: migration failed %d, type %lx\n",
> - pfn, ret, page->flags);
> + pr_info("soft offline: %#lx: migration failed %d, type %lx (%pGp)\n",
> + pfn, ret, page->flags, &page->flags);
> if (ret > 0)
> ret = -EIO;
> }
> } else {
> - pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
> - pfn, ret, page_count(page), page->flags);
> + pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx (%pGp)\n",
> + pfn, ret, page_count(page), page->flags, &page->flags);
> }
> return ret;
> }
> --
> 1.8.5.2
>
>
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