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| author | Baolin Wang <baolin.wang@linux.alibaba.com> | 2024-04-03 16:47:21 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-04-26 06:56:36 +0300 |
| commit | 6303d1c553c8d758f068de70a41668622b7a917c (patch) | |
| tree | db62869b295ea3fdfa6eca57c4ba620c9f39d0b3 /mm/swapfile.c | |
| parent | 039d26d10d62b71e242cde1092b042ae1fee498d (diff) | |
| download | linux-6303d1c553c8d758f068de70a41668622b7a917c.tar.xz | |
mm: page_alloc: use the correct THP order for THP PCP
Commit 44042b449872 ("mm/page_alloc: allow high-order pages to be stored
on the per-cpu lists") extends the PCP allocator to store THP pages, and
it determines whether to cache THP pages in PCP by comparing with
pageblock_order. But the pageblock_order is not always equal to THP
order. It might also be MAX_PAGE_ORDER, which could prevent PCP from
caching THP pages.
Therefore, using HPAGE_PMD_ORDER instead to determine the need for caching
THP for PCP will fix this issue
Link: https://lkml.kernel.org/r/a25c9e14cd03907d5978b60546a69e6aa3fc2a7d.1712151833.git.baolin.wang@linux.alibaba.com
Fixes: 44042b449872 ("mm/page_alloc: allow high-order pages to be stored on the per-cpu lists")
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Barry Song <baohua@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
0 files changed, 0 insertions, 0 deletions