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| author |  Zi Yan <ziy@nvidia.com>
| 2024-06-18 09:41:51 -0400 |
|---|---|---|
| committer |  Andrew Morton <akpm@linux-foundation.org>
| 2024-06-24 20:52:10 -0700 |
| commit | c6408250703530187cc6250dcd702d12a71c44f5 (patch) | |
| tree | 28dd05981bea0507270dd556742ec1677972f947 /mm/page_alloc.c | |
| parent | MAINTAINERS: TPM DEVICE DRIVER: update the W-tag (diff) | |
| download | linux-c6408250703530187cc6250dcd702d12a71c44f5.tar.gz linux-c6408250703530187cc6250dcd702d12a71c44f5.tar.bz2 linux-c6408250703530187cc6250dcd702d12a71c44f5.zip | |
mm/migrate: make migrate_pages_batch() stats consistent
As Ying pointed out in [1], stats->nr_thp_failed needs to be updated to
avoid stats inconsistency between MIGRATE_SYNC and MIGRATE_ASYNC when
calling migrate_pages_batch().
Because if not, when migrate_pages_batch() is called via
migrate_pages(MIGRATE_ASYNC), nr_thp_failed will not be increased and when
migrate_pages_batch() is called via migrate_pages(MIGRATE_SYNC*),
nr_thp_failed will be increase in migrate_pages_sync() by
stats->nr_thp_failed += astats.nr_thp_split.
[1] https://lore.kernel.org/linux-mm/87msnq7key.fsf@yhuang6-desk2.ccr.corp.intel.com/
Link: https://lkml.kernel.org/r/20240620012712.19804-1-zi.yan@sent.com
Link: https://lkml.kernel.org/r/20240618134151.29214-1-zi.yan@sent.com
Fixes: 7262f208ca68 ("mm/migrate: split source folio if it is on deferred split list")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Suggested-by: "Huang, Ying" <ying.huang@intel.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Yin Fengwei <fengwei.yin@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions