From nobody Sat Feb 14 02:41:29 2026 Received: from invmail4.hynix.com (exvmail4.hynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C60AFDF51 for ; Mon, 20 May 2024 02:17:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=166.125.252.92 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716171479; cv=none; b=iDYh05PaXAi2wI+VZpeNHZ+Tkt7m+6zcGLOx0Hn2A/PltNKXwIee3sDxcKlIkZTZjlw8S9u5yTLqQ+fDjxMvkmuxw5AV6tsmXwJwqVkSouqLYclmC8WjUXlZYg/dfNbgN6SOqnOxiutwjmfBVSgc5gONutMUkh6asjVsbocBcZM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716171479; c=relaxed/simple; bh=U4C6hgege4A70iJyvoq3+WAv26Y57xC3oCvCrAAOIQ0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=oAOUq1W/k7fXysyNPFTE9s10MoDUAYB8vEHT6zFx2XKES9wfLs7E/aVb3Zu2bu/qm9XLwghW6oPlmBYiQCuBoVGPNOzyrYbdBC1tyr9juHar/cLhuGZ1VmHy/GTLeGr8urHCKqxQwRNSEha++6m37hjLeDBEImbWtqKADaM4Ezs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-d6dff70000001748-b8-664ab2c98732 From: Byungchul Park To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: kernel_team@skhynix.com, akpm@linux-foundation.org, ying.huang@intel.com, vernhao@tencent.com, mgorman@techsingularity.net, hughd@google.com, willy@infradead.org, david@redhat.com, peterz@infradead.org, luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, rjgolo@gmail.com Subject: [RESEND PATCH v10 07/12] mm: add a parameter, unmap generation number, to free_unref_folios() Date: Mon, 20 May 2024 11:17:29 +0900 Message-Id: <20240520021734.21527-8-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240520021734.21527-1-byungchul@sk.com> References: <20240520021734.21527-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrKLMWRmVeSWpSXmKPExsXC9ZZnke7JTV5pBn/WcVrMWb+GzeLzhn9s Fi82tDNafF3/i9ni6ac+FovLu+awWdxb85/V4vyutawWO5buY7K4dGABk8Xx3gNMFvPvfWaz 2LxpKrPF8SlTGS1+/wAqPjlrMouDgMf31j4Wj52z7rJ7LNhU6rF5hZbH4j0vmTw2repk89j0 aRK7x7tz59g9Tsz4zeIx72Sgx/t9V9k8tv6y82iceo3N4/MmuQC+KC6blNSczLLUIn27BK6M Td8msBXcVavouuPfwLhTvouRk0NCwETi+ZJX7DD21ZX3mEBsNgF1iRs3fjKD2CICZhIHW/+A 1TAL3GWSONDPBmILC6RJ3J84H8xmEVCVONV1GqyXV8BUYsvHx4wQM+UlVm84ADaHE2jOjFU7 WUBsIaCaH0e/AvVyAdW8Z5M4+r6LBaJBUuLgihssExh5FzAyrGIUyswry03MzDHRy6jMy6zQ S87P3cQIDPxltX+idzB+uhB8iFGAg1GJh3fHI880IdbEsuLK3EOMEhzMSiK8m7YAhXhTEiur Uovy44tKc1KLDzFKc7AoifMafStPERJITyxJzU5NLUgtgskycXBKNTAGKB97+tTbeKZ1XSHr 239H9e70ewTlztj+MHhjlLnD+l9/xd83Zj1dYSQ7oSx1x7NJtyrrp6u3b5D/2+/SklL528zs 2G+d84+y9+XxFTHbSbEK6J+4ciLj5rE1kbmqF89qMNufnbW8QHjTnK2aWTM2GzYFH9s8d2qs 7jPj622LpiVsv/rYaPFJJZbijERDLeai4kQAutg0mngCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNLMWRmVeSWpSXmKPExsXC5WfdrHtyk1eawXZeiznr17BZfN7wj83i xYZ2Rouv638xWzz91MdicXjuSVaLy7vmsFncW/Of1eL8rrWsFjuW7mOyuHRgAZPF8d4DTBbz 731ms9i8aSqzxfEpUxktfv8AKj45azKLg6DH99Y+Fo+ds+6yeyzYVOqxeYWWx+I9L5k8Nq3q ZPPY9GkSu8e7c+fYPU7M+M3iMe9koMf7fVfZPBa/+MDksfWXnUfj1GtsHp83yQXwR3HZpKTm ZJalFunbJXBlbPo2ga3grlpF1x3/Bsad8l2MnBwSAiYSV1feYwKx2QTUJW7c+MkMYosImEkc bP3DDmIzC9xlkjjQzwZiCwukSdyfOB/MZhFQlTjVdRqsl1fAVGLLx8eMEDPlJVZvOAA2hxNo zoxVO1lAbCGgmh9Hv7JNYORawMiwilEkM68sNzEzx1SvODujMi+zQi85P3cTIzCIl9X+mbiD 8ctl90OMAhyMSjy8G257pgmxJpYVV+YeYpTgYFYS4d20BSjEm5JYWZValB9fVJqTWnyIUZqD RUmc1ys8NUFIID2xJDU7NbUgtQgmy8TBKdXAeL/BPtem2GmeynLu1j/Pl07tLPnMoqUxpajs TFXDe+s1nzbm+Kl71hUU9vSWXv04ne2IZp2MwvtTD3NMLk86wTznpuC96mK5czoHVwg8yT3J eWD+9AU3t71Yf3lHS9lvgc4VMRsPVQcJHmW4yFT68vU3q5jNFxwcevdMUxVftWEb++P2M+Uv liixFGckGmoxFxUnAgB0MP5JXgIAAA== X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Unmap generation number is used by luf mechanism to track need of tlb flush for each page residing in pcp or buddy. The number should be delivered to pcp or buddy via free_unref_folios() that is for releasing folios that have been unmapped during reclaim in shrink_folio_list(). Signed-off-by: Byungchul Park --- mm/internal.h | 2 +- mm/page_alloc.c | 10 +++++----- mm/swap.c | 6 +++--- mm/vmscan.c | 8 ++++---- 4 files changed, 13 insertions(+), 13 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 332662047c17..0d4c74e76de6 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -639,7 +639,7 @@ extern bool free_pages_prepare(struct page *page, unsig= ned int order); extern int user_min_free_kbytes; =20 void free_unref_page(struct page *page, unsigned int order, unsigned short= int ugen); -void free_unref_folios(struct folio_batch *fbatch); +void free_unref_folios(struct folio_batch *fbatch, unsigned short int ugen= ); =20 extern void zone_pcp_reset(struct zone *zone); extern void zone_pcp_disable(struct zone *zone); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 2cd278c207d1..63f14305f4de 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2706,7 +2706,7 @@ void free_unref_page(struct page *page, unsigned int = order, /* * Free a batch of folios */ -void free_unref_folios(struct folio_batch *folios) +void free_unref_folios(struct folio_batch *folios, unsigned short int ugen) { unsigned long __maybe_unused UP_flags; struct per_cpu_pages *pcp =3D NULL; @@ -2729,7 +2729,7 @@ void free_unref_folios(struct folio_batch *folios) */ if (!pcp_allowed_order(order)) { free_one_page(folio_zone(folio), &folio->page, - pfn, order, FPI_NONE, 0); + pfn, order, FPI_NONE, ugen); continue; } folio->private =3D (void *)(unsigned long)order; @@ -2765,7 +2765,7 @@ void free_unref_folios(struct folio_batch *folios) */ if (is_migrate_isolate(migratetype)) { free_one_page(zone, &folio->page, pfn, - order, FPI_NONE, 0); + order, FPI_NONE, ugen); continue; } =20 @@ -2778,7 +2778,7 @@ void free_unref_folios(struct folio_batch *folios) if (unlikely(!pcp)) { pcp_trylock_finish(UP_flags); free_one_page(zone, &folio->page, pfn, - order, FPI_NONE, 0); + order, FPI_NONE, ugen); continue; } locked_zone =3D zone; @@ -2793,7 +2793,7 @@ void free_unref_folios(struct folio_batch *folios) =20 trace_mm_page_free_batched(&folio->page); free_unref_page_commit(zone, pcp, &folio->page, migratetype, - order, 0); + order, ugen); } =20 if (pcp) { diff --git a/mm/swap.c b/mm/swap.c index 0fc5a5e8457f..1937ac937b8f 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -163,11 +163,11 @@ void put_pages_list(struct list_head *pages) /* LRU flag must be clear because it's passed using the lru */ if (folio_batch_add(&fbatch, folio) > 0) continue; - free_unref_folios(&fbatch); + free_unref_folios(&fbatch, 0); } =20 if (fbatch.nr) - free_unref_folios(&fbatch); + free_unref_folios(&fbatch, 0); INIT_LIST_HEAD(pages); } EXPORT_SYMBOL(put_pages_list); @@ -1029,7 +1029,7 @@ void folios_put_refs(struct folio_batch *folios, unsi= gned int *refs) =20 folios->nr =3D j; mem_cgroup_uncharge_folios(folios); - free_unref_folios(folios); + free_unref_folios(folios, 0); } EXPORT_SYMBOL(folios_put_refs); =20 diff --git a/mm/vmscan.c b/mm/vmscan.c index 49bd94423961..bb0ff11f9ec9 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1460,7 +1460,7 @@ static unsigned int shrink_folio_list(struct list_hea= d *folio_list, if (folio_batch_add(&free_folios, folio) =3D=3D 0) { mem_cgroup_uncharge_folios(&free_folios); try_to_unmap_flush(); - free_unref_folios(&free_folios); + free_unref_folios(&free_folios, 0); } continue; =20 @@ -1527,7 +1527,7 @@ static unsigned int shrink_folio_list(struct list_hea= d *folio_list, =20 mem_cgroup_uncharge_folios(&free_folios); try_to_unmap_flush(); - free_unref_folios(&free_folios); + free_unref_folios(&free_folios, 0); =20 list_splice(&ret_folios, folio_list); count_vm_events(PGACTIVATE, pgactivate); @@ -1869,7 +1869,7 @@ static unsigned int move_folios_to_lru(struct lruvec = *lruvec, if (folio_batch_add(&free_folios, folio) =3D=3D 0) { spin_unlock_irq(&lruvec->lru_lock); mem_cgroup_uncharge_folios(&free_folios); - free_unref_folios(&free_folios); + free_unref_folios(&free_folios, 0); spin_lock_irq(&lruvec->lru_lock); } =20 @@ -1891,7 +1891,7 @@ static unsigned int move_folios_to_lru(struct lruvec = *lruvec, if (free_folios.nr) { spin_unlock_irq(&lruvec->lru_lock); mem_cgroup_uncharge_folios(&free_folios); - free_unref_folios(&free_folios); + free_unref_folios(&free_folios, 0); spin_lock_irq(&lruvec->lru_lock); } =20 --=20 2.17.1