The patch titled Subject: thp-copy_huge_pmd-copy-huge-zero-page-v6 has been removed from the -mm tree. Its filename was thp-copy_huge_pmd-copy-huge-zero-page-v6.patch This patch was dropped because it was folded into thp-copy_huge_pmd-copy-huge-zero-page.patch ------------------------------------------------------ From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> Subject: thp-copy_huge_pmd-copy-huge-zero-page-v6 It's easy to copy huge zero page. Just set destination pmd to huge zero page. It's safe to copy huge zero page since we have none yet :-p Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx> Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxxxxxxxx> Cc: Mel Gorman <mel@xxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/huge_memory.c | 5 +++++ 1 file changed, 5 insertions(+) diff -puN mm/huge_memory.c~thp-copy_huge_pmd-copy-huge-zero-page-v6 mm/huge_memory.c --- a/mm/huge_memory.c~thp-copy_huge_pmd-copy-huge-zero-page-v6 +++ a/mm/huge_memory.c @@ -958,6 +958,11 @@ int copy_huge_pmd(struct mm_struct *dst_ pte_free(dst_mm, pgtable); goto out_unlock; } + /* + * mm->pagetable lock is enough to be sure that huge zero pmd is not + * under splitting since we don't split the page itself, only pmd to + * a page table. + */ if (is_huge_zero_pmd(pmd)) { set_huge_zero_page(pgtable, dst_mm, vma, addr, dst_pmd); ret = 0; _ Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are origin.patch thp-huge-zero-page-basic-preparation.patch thp-zap_huge_pmd-zap-huge-zero-pmd.patch thp-copy_huge_pmd-copy-huge-zero-page.patch thp-copy_huge_pmd-copy-huge-zero-page-v6-fix.patch thp-do_huge_pmd_wp_page-handle-huge-zero-page.patch thp-do_huge_pmd_wp_page-handle-huge-zero-page-v6.patch thp-do_huge_pmd_wp_page-handle-huge-zero-page-thp-fix-anononymous-page-accounting-in-fallback-path-for-cow-of-hzp.patch thp-change_huge_pmd-make-sure-we-dont-try-to-make-a-page-writable.patch thp-change-split_huge_page_pmd-interface.patch thp-change-split_huge_page_pmd-interface-v6.patch thp-implement-splitting-pmd-for-huge-zero-page.patch thp-implement-splitting-pmd-for-huge-zero-page-fix.patch thp-implement-splitting-pmd-for-huge-zero-page-v6.patch thp-setup-huge-zero-page-on-non-write-page-fault.patch thp-setup-huge-zero-page-on-non-write-page-fault-fix.patch thp-lazy-huge-zero-page-allocation.patch thp-implement-refcounting-for-huge-zero-page.patch thp-implement-refcounting-for-huge-zero-page-fix.patch thp-vmstat-implement-hzp_alloc-and-hzp_alloc_failed-events.patch thp-vmstat-implement-hzp_alloc-and-hzp_alloc_failed-events-v6.patch thp-introduce-sysfs-knob-to-disable-huge-zero-page.patch thp-avoid-race-on-multiple-parallel-page-faults-to-the-same-page.patch asm-generic-mm-pgtable-consolidate-zero-page-helpers.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html