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mm/collapse: name the per-table scan reset for what it resets

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collapse_control_init_scan() resets what one scan accumulates: the node
load, the allocation nodemask and the eligible-PTE bitmap.  It runs before
every PTE table a scan is given, not once per control, so its name points
at the wrong thing.

Call it collapse_scan_reset().

Preparation for giving a control a real init, run once for a whole series
of scans.  Two names a word apart would then stand for two different jobs.

No functional change.

Link: https://lore.kernel.org/20261014171145.3292736-8-kas@kernel.org
Signed-off-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Assisted-by: LLM
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Nico Pache <nico.pache@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Usama Arif <usama.arif@linux.dev>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Jann Horn <jannh@google.com>
This commit is contained in:
Kiryl Shutsemau (Meta) 2026-10-14 18:11:40 +01:00 committed by Andrew Morton
parent d5dd87dbd6
commit e7c4148ad1
1 changed files with 3 additions and 3 deletions
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6
mm/khugepaged.c
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@ -532,7 +532,7 @@ void __khugepaged_exit(struct mm_struct *mm)
}
}
static void collapse_control_init_scan(struct collapse_control *cc)
static void collapse_scan_reset(struct collapse_control *cc)
{
memset(cc->node_load, 0, sizeof(cc->node_load));
nodes_clear(cc->alloc_nmask);
@ -1607,7 +1607,7 @@ static enum scan_result collapse_scan_pmd(struct mm_struct *mm,
goto out;
}
collapse_control_init_scan(cc);
collapse_scan_reset(cc);
enabled_orders = collapse_possible_orders(vma, vma->vm_flags, tva_flags);
@ -2681,7 +2681,7 @@ static enum scan_result collapse_scan_file(struct mm_struct *mm,
present = 0;
swap = 0;
collapse_control_init_scan(cc);
collapse_scan_reset(cc);
rcu_read_lock();
xas_for_each(&xas, folio, start + HPAGE_PMD_NR - 1) {
if (xas_retry(&xas, folio))