The patch titled
Subject: mm: huge_memory: add the missing folio_test_pmd_mappable() for THP split statistics
has been added to the -mm mm-unstable branch. Its filename is
mm-huge_memory-add-the-missing-folio_test_pmd_mappable-for-thp-split-statistics.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-huge_memory-add-the-missing-folio_test_pmd_mappable-for-thp-split-statistics.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: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Subject: mm: huge_memory: add the missing folio_test_pmd_mappable() for THP split statistics
Date: Fri, 29 Mar 2024 14:59:33 +0800
Now the mTHP can also be split or added into the deferred list, so add
folio_test_pmd_mappable() validation for PMD mapped THP, to avoid
confusion with PMD mapped THP related statistics.
Link: https://lkml.kernel.org/r/a5341defeef27c9ac7b85c97f030f93e4368bbc1.1711694852.git.baolin.wang@xxxxxxxxxxxxxxxxx
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/mm/huge_memory.c~mm-huge_memory-add-the-missing-folio_test_pmd_mappable-for-thp-split-statistics
+++ a/mm/huge_memory.c
@@ -3109,7 +3109,8 @@ out_unlock:
i_mmap_unlock_read(mapping);
out:
xas_destroy(&xas);
- count_vm_event(!ret ? THP_SPLIT_PAGE : THP_SPLIT_PAGE_FAILED);
+ if (folio_test_pmd_mappable(folio))
+ count_vm_event(!ret ? THP_SPLIT_PAGE : THP_SPLIT_PAGE_FAILED);
return ret;
}
@@ -3171,7 +3172,8 @@ void deferred_split_folio(struct folio *
spin_lock_irqsave(&ds_queue->split_queue_lock, flags);
if (list_empty(&folio->_deferred_list)) {
- count_vm_event(THP_DEFERRED_SPLIT_PAGE);
+ if (folio_test_pmd_mappable(folio))
+ count_vm_event(THP_DEFERRED_SPLIT_PAGE);
list_add_tail(&folio->_deferred_list, &ds_queue->split_queue);
ds_queue->split_queue_len++;
#ifdef CONFIG_MEMCG
_
Patches currently in -mm which might be from baolin.wang@xxxxxxxxxxxxxxxxx are
mm-record-the-migration-reason-for-struct-migration_target_control.patch
mm-hugetlb-make-the-hugetlb-migration-strategy-consistent.patch
docs-hugetlbpagerst-add-hugetlb-migration-description.patch
mm-factor-out-the-numa-mapping-rebuilding-into-a-new-helper.patch
mm-support-multi-size-thp-numa-balancing.patch
mm-huge_memory-add-the-missing-folio_test_pmd_mappable-for-thp-split-statistics.patch
