diff options
| author | Dmitry Ilvokhin <d@ilvokhin.com> | 2026-04-29 15:02:13 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-05-29 07:05:06 +0300 |
| commit | 95b8e432265f61bd9ecdce07d76be6182289ac2a (patch) | |
| tree | 8e342581e613e06944bf9b2ed24cf92d9eba81a6 | |
| parent | 5ad64655dde8e5416fc0fff51a189879fe3235fd (diff) | |
| download | linux-95b8e432265f61bd9ecdce07d76be6182289ac2a.tar.xz | |
mm: use zone lock guard in __offline_isolated_pages()
Use spinlock_irqsave zone lock guard in __offline_isolated_pages() to
replace the explicit lock/unlock pattern with automatic scope-based
cleanup.
Link: https://lore.kernel.org/13149be4f8151e18eb5f1eb4f3241ab3cffb373e.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>
| -rw-r--r-- | mm/page_alloc.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8835064aaa8c..69a99af77777 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7531,7 +7531,7 @@ void zone_pcp_reset(struct zone *zone) unsigned long __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn) { - unsigned long already_offline = 0, flags; + unsigned long already_offline = 0; unsigned long pfn = start_pfn; struct page *page; struct zone *zone; @@ -7539,7 +7539,7 @@ unsigned long __offline_isolated_pages(unsigned long start_pfn, offline_mem_sections(pfn, end_pfn); zone = page_zone(pfn_to_page(pfn)); - spin_lock_irqsave(&zone->lock, flags); + guard(spinlock_irqsave)(&zone->lock); while (pfn < end_pfn) { page = pfn_to_page(pfn); /* @@ -7569,7 +7569,6 @@ unsigned long __offline_isolated_pages(unsigned long start_pfn, del_page_from_free_list(page, zone, order, MIGRATE_ISOLATE); pfn += (1 << order); } - spin_unlock_irqrestore(&zone->lock, flags); return end_pfn - start_pfn - already_offline; } |