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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-03-23 00:46:38 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-23 01:57:09 +0300
commitda358d5c0e589a7a594551951a9631091e5479b6 (patch)
treed189d78b614829345e1d3ac517773c3fcc98248c /mm/rmap.c
parent1bad2e5ca00b4c35cd2d62e380ba3aa7ec05b778 (diff)
downloadlinux-da358d5c0e589a7a594551951a9631091e5479b6.tar.xz
mm/hwpoison: check the subpage, not the head page
Hardware poison is tracked on a per-page basis, not on the head page. Link: https://lkml.kernel.org/r/20220130013042.1906881-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Reviewed-by: Yang Shi <shy828301@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 6a1e8c7f6213..09b08888120e 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1553,7 +1553,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
/* Update high watermark before we lower rss */
update_hiwater_rss(mm);
- if (PageHWPoison(page) && !(flags & TTU_IGNORE_HWPOISON)) {
+ if (PageHWPoison(subpage) && !(flags & TTU_IGNORE_HWPOISON)) {
pteval = swp_entry_to_pte(make_hwpoison_entry(subpage));
if (PageHuge(page)) {
hugetlb_count_sub(compound_nr(page), mm);
@@ -1873,7 +1873,7 @@ static bool try_to_migrate_one(struct page *page, struct vm_area_struct *vma,
* memory are supported.
*/
subpage = page;
- } else if (PageHWPoison(page)) {
+ } else if (PageHWPoison(subpage)) {
pteval = swp_entry_to_pte(make_hwpoison_entry(subpage));
if (PageHuge(page)) {
hugetlb_count_sub(compound_nr(page), mm);