From: Hugh Dickins <hughd@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Ackerley Tng <ackerleytng@google.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Alexandre Ghiti <alex@ghiti.fr>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Barry Song <baohua@kernel.org>,
Binbin Wu <binbin.wu@linux.intel.com>,
Christian Brauner <brauner@kernel.org>,
Christoph Hellwig <hch@lst.de>,
Christoph Lameter <cl@gentwo.org>,
Claudio Imbrenda <imbrenda@linux.ibm.com>,
David Hildenbrand <david@kernel.org>,
JP Kobryn <jp.kobryn@linux.dev>, Jan Kara <jack@suse.cz>,
Jens Axboe <axboe@kernel.dk>,
Johannes Weiner <hannes@cmpxchg.org>,
Kairui Song <ryncsn@gmail.com>, Kiryl Shutsemau <kas@kernel.org>,
Lance Yang <lance.yang@linux.dev>,
Leonardo Bras <leobras.c@gmail.com>,
Lorenzo Stoakes <ljs@kernel.org>,
Marcelo Tosatti <mtosatti@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
Mel Gorman <mgorman@techsingularity.net>,
Miaohe Lin <linmiaohe@huawei.com>,
Michal Hocko <mhocko@suse.com>, Minchan Kim <minchan@kernel.org>,
Muchun Song <muchun.song@linux.dev>,
Oscar Salvador <osalvador@suse.de>,
Peter Zijlstra <peterz@infradead.org>,
Qi Zheng <qi.zheng@linux.dev>, Rik van Riel <riel@surriel.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Shakeel Butt <shakeel.butt@linux.dev>,
Suren Baghdasaryan <surenb@google.com>,
Vlastimil Babka <vbabka@kernel.org>,
Yang Shi <yang@os.amperecomputing.com>,
Yu Zhao <yuzhao@google.com>, Zach O'Keefe <zokeefe@google.com>,
Zi Yan <ziy@nvidia.com>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH v2 20/26] s390/fbatch: no lru_add_drain_all() in s390_wiggle_split_folio()
Date: Wed, 9 Sep 2026 03:23:00 -0700 (PDT) [thread overview]
Message-ID: <d8a9dcab-4fc6-1f28-d6b2-e9231f3ba150@google.com> (raw)
In-Reply-To: <e28f9a94-4339-f8ac-8301-6be3c9b5b7ce@google.com>
s390_wiggle_split_folio() has no good reason to lru_add_drain_all(),
now that the per-cpu fbatch references are gone.
Signed-off-by: Hugh Dickins <hughd@google.com>
---
arch/s390/kernel/uv.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index dc14ebc0105b..120a467026a5 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -364,7 +364,6 @@ int s390_wiggle_split_folio(struct mm_struct *mm, struct folio *folio)
lockdep_assert_not_held(&mm->mmap_lock);
folio_wait_writeback(folio);
- lru_add_drain_all();
if (!folio_test_large(folio))
return 0;
--
2.51.0
next prev parent reply other threads:[~2026-09-09 10:23 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 9:39 [PATCH v2 00/26] mm/fbatch: drain lru_add_drain() and _all() Hugh Dickins
2026-09-09 9:42 ` [PATCH v2 01/26] mm/fbatch: remove !CONFIG_SMP special case of folio_activate() Hugh Dickins
2026-09-09 9:44 ` [PATCH v2 02/26] mm/fbatch: allow folios_put_refs() to skip xa_is_value() entries Hugh Dickins
2026-09-09 9:46 ` [PATCH v2 03/26] mm/fbatch: temporarily disable lazyfree and mlock+munlock batching Hugh Dickins
2026-09-09 9:49 ` [PATCH v2 04/26] mm/fbatch: lru bit set, no extra ref, while folio on per-cpu fbatch Hugh Dickins
2026-09-09 12:25 ` Vlastimil Babka (SUSE)
2026-09-09 9:51 ` [PATCH v2 05/26] mm/fbatch: lru_add_del_folio()+folio_add_lru() after clear_lru() Hugh Dickins
2026-09-09 15:04 ` Vlastimil Babka (SUSE)
2026-09-09 9:53 ` [PATCH v2 06/26] mm/fbatch: fbatch_drain_lazyfree(onstack fbatch) before ptl unlock Hugh Dickins
2026-09-09 21:02 ` Vlastimil Babka (SUSE)
2026-09-09 9:55 ` [PATCH v2 07/26] mm/fbatch: LRU_NEXT_ACTIVATE bit to optimize folio_activate() Hugh Dickins
2026-09-10 12:01 ` Vlastimil Babka (SUSE)
2026-09-10 16:42 ` Kiryl Shutsemau
2026-09-09 9:57 ` [PATCH v2 08/26] mm/fbatch: replace mlock_new_folio() by __folio_add_lru(,mlockit) Hugh Dickins
2026-09-10 17:47 ` Vlastimil Babka (SUSE)
2026-09-09 9:59 ` [PATCH v2 09/26] mm/fbatch: restore mlock+munlock batching, without extra ref Hugh Dickins
2026-09-10 21:05 ` Vlastimil Babka (SUSE)
2026-09-09 10:01 ` [PATCH v2 10/26] mm/fbatch: remove several uses of mlock_drain_local() Hugh Dickins
2026-09-09 10:03 ` [PATCH v2 11/26] mm/fbatch: remove migration's PAGE_WAS_MLOCKED lru_add_drain() Hugh Dickins
2026-09-09 10:05 ` [PATCH v2 12/26] mm/fbatch: remove percpu_pvec_drained and folios_put() Hugh Dickins
2026-09-09 10:08 ` [PATCH v2 13/26] mm/fbatch: no lru_add_drain to collect_longterm_unpinnable_folios() Hugh Dickins
2026-09-09 10:10 ` [PATCH v2 14/26] mm/fbatch: no lru_add_drain() nor _all() for memfd_wait_for_pins() Hugh Dickins
2026-09-09 10:12 ` [PATCH v2 15/26] mm/fbatch: remove shake_folio() shake_page() from memory-failure Hugh Dickins
2026-09-09 10:14 ` [PATCH v2 16/26] mm/fbatch: remove lru_cache_disable() from NUMA folio migration Hugh Dickins
2026-09-09 10:16 ` [PATCH v2 17/26] mm/fbatch: no lru_cache_disable() in __alloc_contig_migrate_range() Hugh Dickins
2026-09-09 10:18 ` [PATCH v2 18/26] mm/fbatch: remove lru_add_drain() and _all() calls from various Hugh Dickins
2026-09-09 10:20 ` [PATCH v2 19/26] mm/fbatch: vm/stat_refresh include lru_add_drain() on each cpu Hugh Dickins
2026-09-09 10:23 ` Hugh Dickins [this message]
2026-09-09 10:25 ` [PATCH v2 21/26] block/fbatch: no lru_add_drain_all() in invalidate_bdev() Hugh Dickins
2026-09-09 10:27 ` [PATCH v2 22/26] fs/fbatch: drop_caches invalidate_bh_lrus() not lru_add_drain_all() Hugh Dickins
2026-09-09 10:30 ` [PATCH v2 23/26] fs,mm/fbatch: use invalidate_bh_lrus() not invalidate_bh_lrus_cpu() Hugh Dickins
2026-09-09 10:33 ` [PATCH v2 24/26] fs,mm/fbatch: lru_cache_disable() keep off buffer_head lrus only Hugh Dickins
2026-09-09 10:35 ` [PATCH v2 25/26] mm/fbatch: move lru_add_drain_all() declaration to mm/internal.h Hugh Dickins
2026-09-09 10:37 ` [PATCH v2 26/26] mm/fbatch: drop reference inside the loop when draining Hugh Dickins
2026-09-09 10:41 ` [PATCH v2 27/26] mm/fbatch: paranoid folio vmstats in folio_batch_move_lru() Hugh Dickins
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