The patch titled
Subject: mm-re-allow-pinning-of-zero-pfns-again-fix
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-re-allow-pinning-of-zero-pfns-again-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-re-allow-pinning-of-zero-pfns-again-fix.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-re-allow-pinning-of-zero-pfns-again-fix
Date: Sat Aug 27 06:38:23 PM PDT 2022
simplify comment, per John
Cc: Alex Sierra <alex.sierra@xxxxxxx>
Cc: Alex Williamson <alex.williamson@xxxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Felix Kuehling <felix.kuehling@xxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Slawomir Laba <slawomirx.laba@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
--- a/include/linux/mm.h~mm-re-allow-pinning-of-zero-pfns-again-fix
+++ a/include/linux/mm.h
@@ -1544,11 +1544,7 @@ static inline bool is_longterm_pinnable_
if (mt == MIGRATE_CMA || mt == MIGRATE_ISOLATE)
return false;
#endif
- /*
- * The zero page might reside in a movable zone, however it may not
- * be migrated and can therefore be pinned. The vfio subsystem pins
- * user mappings including the zero page for IOMMU translation.
- */
+ /* The zero page may always be pinned */
if (is_zero_pfn(page_to_pfn(page)))
return true;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-re-allow-pinning-of-zero-pfns-again-fix.patch
asm-generic-sections-refactor-memory_intersects-fix.patch
mm-page_alloc-fix-race-condition-between-build_all_zonelists-and-page-allocation-fix.patch
procfs-add-path-to-proc-pid-fdinfo-fix.patch
zsmalloc-zs_object_copy-add-clarifying-comment-fix.patch
mm-gupc-simplify-and-fix-check_and_migrate_movable_pages-return-codes-fix-fix.patch
mm-oom_kill-add-trace-logs-in-process_mrelease-system-call-fix.patch
zsmalloc-zs_object_copy-replace-email-link-to-doc-checkpatch-fixes.patch
mm-demotion-add-support-for-explicit-memory-tiers-fix.patch
mm-demotion-update-node_is_toptier-to-work-with-memory-tiers-fix-2.patch
mm-drop-oom-code-from-exit_mmap-fix-fix.patch
mm-delete-unused-mmf_oom_victim-flag-vs-mglru.patch
mm-add-merging-after-mremap-resize-checkpatch-fixes.patch
mm-gupc-refactor-check_and_migrate_movable_pages-fix.patch
hugetlb-rename-remove_huge_page-to-hugetlb_delete_from_page_cache-fix.patch
hugetlb-handle-truncate-racing-with-page-faults-fix-fix.patch
mm-reduce-noise-in-show_mem-for-lowmem-allocations-fix-2.patch
mm-reduce-noise-in-show_mem-for-lowmem-allocations-vs-mapletree.patch
page_ext-introduce-boot-parameter-early_page_ext-fix.patch
mm-fix-null-ptr-deref-in-kswapd_is_running-fix.patch
ia64-fix-clock_getresclock_monotonic-to-report-itc-frequency-checkpatch-fixes.patch
