[nacked] mm-thp-update-mm_structs-mm_anonpages-stat-for-huge-zero-pages.patch removed from -mm tree

[nacked] mm-thp-update-mm_structs-mm_anonpages-stat-for-huge-zero-pages.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm/thp: update mm_struct's MM_ANONPAGES stat for huge zero pages
has been removed from the -mm tree.  Its filename was
     mm-thp-update-mm_structs-mm_anonpages-stat-for-huge-zero-pages.patch

This patch was dropped because it was nacked

------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@arm.com>
Subject: mm/thp: update mm_struct's MM_ANONPAGES stat for huge zero pages

Although the zero huge page is being shared across various processes, each
mapping needs to update its mm_struct's MM_ANONPAGES stat by HPAGE_PMD_NR
to be consistent.  This just updates the stats in set_huge_zero_page()
after the mapping gets created and in zap_huge_pmd() when mapping gets
destroyed.

Link: https://lkml.kernel.org/r/1621313300-1118-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Zi Yan<ziy@nvidia.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/huge_memory.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/huge_memory.c~mm-thp-update-mm_structs-mm_anonpages-stat-for-huge-zero-pages
+++ a/mm/huge_memory.c
@@ -715,6 +715,7 @@ static void set_huge_zero_page(pgtable_t
 	if (pgtable)
 		pgtable_trans_huge_deposit(mm, pmd, pgtable);
 	set_pmd_at(mm, haddr, pmd, entry);
+	add_mm_counter(mm, MM_ANONPAGES, HPAGE_PMD_NR);
 	mm_inc_nr_ptes(mm);
 }
 
@@ -1627,6 +1628,7 @@ int zap_huge_pmd(struct mmu_gather *tlb,
 		spin_unlock(ptl);
 	} else if (is_huge_zero_pmd(orig_pmd)) {
 		zap_deposited_table(tlb->mm, pmd);
+		add_mm_counter(tlb->mm, MM_ANONPAGES, -HPAGE_PMD_NR);
 		spin_unlock(ptl);
 	} else {
 		struct page *page = NULL;
_

Patches currently in -mm which might be from anshuman.khandual@arm.com are

mm-debug_vm_pgtable-ensure-thp-availability-via-has_transparent_hugepage.patch
mm-thp-make-alloc_split_ptlocks-dependent-on-use_split_pte_ptlocks.patch
mm-define-default-value-for-first_user_address.patch