mm, soft_offline: improve hugepage soft offlining error log

On a failed attempt, we get the following entry: soft offline: 0x3c0000:
migration failed 1, type 17ffffc0008008 (uptodate|head)

Make this more specific to be straightforward and to follow other error
log formats in soft_offline_huge_page().

Link: http://lkml.kernel.org/r/20171016171757.GA3018@ubuntu-desk-vm
Signed-off-by: Laszlo Toth <laszlth@gmail.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 88366626c0b7c790d92514f32cb3cea701dd0ffb..4acdf393a80181336084f4f6da6539f78249ba30 100644 (file)
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1587,7 +1587,7 @@ 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 (%pGp)\n",
+               pr_info("soft offline: %#lx: hugepage migration failed %d, type %lx (%pGp)\n",
                        pfn, ret, page->flags, &page->flags);
                if (!list_empty(&pagelist))
                        putback_movable_pages(&pagelist);