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mm: use zone lock guard in free_pcppages_bulk()

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Use spinlock_irqsave zone lock guard in free_pcppages_bulk() to replace
the explicit lock/unlock pattern with automatic scope-based cleanup.

Link: https://lore.kernel.org/aafc2d660057a91eb40417f8ff4645b0a8c525e2.1777462630.git.d@ilvokhin.com
Signed-off-by: Dmitry Ilvokhin <d@ilvokhin.com>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Dmitry Ilvokhin 2026-04-29 12:02:12 +00:00 committed by Andrew Morton
parent 5e22451096
commit 5ad64655dd
1 changed files with 1 additions and 4 deletions
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5
mm/page_alloc.c
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@ -1469,7 +1469,6 @@ static void free_pcppages_bulk(struct zone *zone, int count,
struct per_cpu_pages *pcp,
int pindex)
{
unsigned long flags;
unsigned int order;
struct page *page;
@ -1482,7 +1481,7 @@ static void free_pcppages_bulk(struct zone *zone, int count,
/* Ensure requested pindex is drained first. */
pindex = pindex - 1;
spin_lock_irqsave(&zone->lock, flags);
guard(spinlock_irqsave)(&zone->lock);
while (count > 0) {
struct list_head *list;
@ -1514,8 +1513,6 @@ static void free_pcppages_bulk(struct zone *zone, int count,
trace_mm_page_pcpu_drain(page, order, mt);
} while (count > 0 && !list_empty(list));
}
spin_unlock_irqrestore(&zone->lock, flags);
}
/* Split a multi-block free page into its individual pageblocks. */