The patch titled
Subject: mm/memory-failure: convert try_memory_failure_hugetlb() to folios
has been added to the -mm mm-unstable branch. Its filename is
mm-memory-failure-convert-try_memory_failure_hugetlb-to-folios.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-failure-convert-try_memory_failure_hugetlb-to-folios.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Subject: mm/memory-failure: convert try_memory_failure_hugetlb() to folios
Date: Thu, 12 Jan 2023 14:46:02 -0600
Use a struct folio rather than a head page in try_memory_failure_hugetlb.
This converts one user of SetHPageMigratable to the folio equivalent.
Link: https://lkml.kernel.org/r/20230112204608.80136-3-sidhartha.kumar@xxxxxxxxxx
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Naoya Horiguchi <naoya.horiguchi@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
--- a/mm/memory-failure.c~mm-memory-failure-convert-try_memory_failure_hugetlb-to-folios
+++ a/mm/memory-failure.c
@@ -1860,7 +1860,7 @@ static int try_memory_failure_hugetlb(un
{
int res;
struct page *p = pfn_to_page(pfn);
- struct page *head;
+ struct folio *folio;
unsigned long page_flags;
bool migratable_cleared = false;
@@ -1873,8 +1873,8 @@ retry:
} else if (res == -EHWPOISON) {
pr_err("%#lx: already hardware poisoned\n", pfn);
if (flags & MF_ACTION_REQUIRED) {
- head = compound_head(p);
- res = kill_accessing_process(current, page_to_pfn(head), flags);
+ folio = page_folio(p);
+ res = kill_accessing_process(current, folio_pfn(folio), flags);
}
return res;
} else if (res == -EBUSY) {
@@ -1885,16 +1885,16 @@ retry:
return action_result(pfn, MF_MSG_UNKNOWN, MF_IGNORED);
}
- head = compound_head(p);
- lock_page(head);
+ folio = page_folio(p);
+ folio_lock(folio);
if (hwpoison_filter(p)) {
- hugetlb_clear_page_hwpoison(head);
+ hugetlb_clear_page_hwpoison(&folio->page);
if (migratable_cleared)
- SetHPageMigratable(head);
- unlock_page(head);
+ folio_set_hugetlb_migratable(folio);
+ folio_unlock(folio);
if (res == 1)
- put_page(head);
+ folio_put(folio);
return -EOPNOTSUPP;
}
@@ -1903,7 +1903,7 @@ retry:
* or demotion can be prevented by PageHWPoison flag.
*/
if (res == 0) {
- unlock_page(head);
+ folio_unlock(folio);
if (__page_handle_poison(p) >= 0) {
page_ref_inc(p);
res = MF_RECOVERED;
@@ -1913,10 +1913,10 @@ retry:
return action_result(pfn, MF_MSG_FREE_HUGE, res);
}
- page_flags = head->flags;
+ page_flags = folio->flags;
- if (!hwpoison_user_mappings(p, pfn, flags, head)) {
- unlock_page(head);
+ if (!hwpoison_user_mappings(p, pfn, flags, &folio->page)) {
+ folio_unlock(folio);
return action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
}
_
Patches currently in -mm which might be from sidhartha.kumar@xxxxxxxxxx are
mm-move-folio_set_compound_order-to-mm-internalh.patch
mm-introduce-folio_is_pfmemalloc.patch
mm-remove-the-hugetlb-field-from-struct-page.patch
mm-memory-failure-convert-__get_huge_page_for_hwpoison-to-folios.patch
mm-memory-failure-convert-try_memory_failure_hugetlb-to-folios.patch
mm-memory-failure-convert-hugetlb_clear_page_hwpoison-to-folios.patch
mm-memory-failure-convert-free_raw_hwp_pages-to-folios.patch
mm-memory-failure-convert-raw_hwp_list_head-to-folios.patch
mm-memory-failure-convert-__free_raw_hwp_pages-to-folios.patch
mm-memory-failure-convert-hugetlb_set_page_hwpoison-to-folios.patch
mm-memory-failure-convert-unpoison_memory-to-folios.patch
