From: Hugh Dickins <hughd@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <ak@linux.intel.com>, Christoph Lameter <cl@linux.com>,
Matthew Wilcox <willy@infradead.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
David Hildenbrand <david@redhat.com>,
Suren Baghdasaryan <surenb@google.com>,
Yang Shi <shy828301@gmail.com>,
Sidhartha Kumar <sidhartha.kumar@oracle.com>,
Vishal Moola <vishal.moola@gmail.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Tejun Heo <tj@kernel.org>,
Mel Gorman <mgorman@techsingularity.net>,
Michal Hocko <mhocko@suse.com>,
"Huang, Ying" <ying.huang@intel.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH v2 09/12] mm: add page_rmappable_folio() wrapper
Date: Tue, 3 Oct 2023 02:25:33 -0700 (PDT) [thread overview]
Message-ID: <8d92c6cf-eebe-748-e29c-c8ab224c741@google.com> (raw)
In-Reply-To: <ebc0987e-beff-8bfb-9283-234c2cbd17c5@google.com>
folio_prep_large_rmappable() is being used repeatedly along with a
conversion from page to folio, a check non-NULL, a check order > 1:
wrap it all up into struct folio *page_rmappable_folio(struct page *).
Signed-off-by: Hugh Dickins <hughd@google.com>
---
mm/internal.h | 9 +++++++++
mm/mempolicy.c | 17 +++--------------
mm/page_alloc.c | 8 ++------
3 files changed, 14 insertions(+), 20 deletions(-)
diff --git a/mm/internal.h b/mm/internal.h
index d7916f1e9e98..b2b3716d1df6 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -415,6 +415,15 @@ static inline void folio_set_order(struct folio *folio, unsigned int order)
void folio_undo_large_rmappable(struct folio *folio);
+static inline struct folio *page_rmappable_folio(struct page *page)
+{
+ struct folio *folio = (struct folio *)page;
+
+ if (folio && folio_order(folio) > 1)
+ folio_prep_large_rmappable(folio);
+ return folio;
+}
+
static inline void prep_compound_head(struct page *page, unsigned int order)
{
struct folio *folio = (struct folio *)page;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index f3224a8b0f6c..bfcc523a2860 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2142,10 +2142,7 @@ struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct *vma,
mpol_cond_put(pol);
gfp |= __GFP_COMP;
page = alloc_page_interleave(gfp, order, nid);
- folio = (struct folio *)page;
- if (folio && order > 1)
- folio_prep_large_rmappable(folio);
- goto out;
+ return page_rmappable_folio(page);
}
if (pol->mode == MPOL_PREFERRED_MANY) {
@@ -2155,10 +2152,7 @@ struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct *vma,
gfp |= __GFP_COMP;
page = alloc_pages_preferred_many(gfp, order, node, pol);
mpol_cond_put(pol);
- folio = (struct folio *)page;
- if (folio && order > 1)
- folio_prep_large_rmappable(folio);
- goto out;
+ return page_rmappable_folio(page);
}
if (unlikely(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hugepage)) {
@@ -2252,12 +2246,7 @@ EXPORT_SYMBOL(alloc_pages);
struct folio *folio_alloc(gfp_t gfp, unsigned order)
{
- struct page *page = alloc_pages(gfp | __GFP_COMP, order);
- struct folio *folio = (struct folio *)page;
-
- if (folio && order > 1)
- folio_prep_large_rmappable(folio);
- return folio;
+ return page_rmappable_folio(alloc_pages(gfp | __GFP_COMP, order));
}
EXPORT_SYMBOL(folio_alloc);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7df77b58a961..00f94dd88355 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4619,12 +4619,8 @@ struct folio *__folio_alloc(gfp_t gfp, unsigned int order, int preferred_nid,
nodemask_t *nodemask)
{
struct page *page = __alloc_pages(gfp | __GFP_COMP, order,
- preferred_nid, nodemask);
- struct folio *folio = (struct folio *)page;
-
- if (folio && order > 1)
- folio_prep_large_rmappable(folio);
- return folio;
+ preferred_nid, nodemask);
+ return page_rmappable_folio(page);
}
EXPORT_SYMBOL(__folio_alloc);
--
2.35.3
next prev parent reply other threads:[~2023-10-03 9:25 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-03 9:12 [PATCH v2 00/12] mempolicy: cleanups leading to NUMA mpol without vma Hugh Dickins
2023-10-03 9:15 ` [PATCH v2 01/12] hugetlbfs: drop shared NUMA mempolicy pretence Hugh Dickins
2023-10-03 9:16 ` [PATCH v2 02/12] kernfs: drop shared NUMA mempolicy hooks Hugh Dickins
2023-10-03 9:17 ` [PATCH v2 03/12] mempolicy: fix migrate_pages(2) syscall return nr_failed Hugh Dickins
2023-10-07 7:27 ` Huang, Ying
2023-10-03 9:19 ` [PATCH v2 04/12] mempolicy trivia: delete those ancient pr_debug()s Hugh Dickins
2023-10-03 9:20 ` [PATCH v2 05/12] mempolicy trivia: slightly more consistent naming Hugh Dickins
2023-10-03 9:21 ` [PATCH v2 06/12] mempolicy trivia: use pgoff_t in shared mempolicy tree Hugh Dickins
2023-10-03 9:22 ` [PATCH v2 07/12] mempolicy: mpol_shared_policy_init() without pseudo-vma Hugh Dickins
2023-10-03 9:24 ` [PATCH v2 08/12] mempolicy: remove confusing MPOL_MF_LAZY dead code Hugh Dickins
2023-10-03 22:28 ` Yang Shi
2023-10-03 9:25 ` Hugh Dickins [this message]
2023-10-03 9:26 ` [PATCH v2 10/12] mempolicy: alloc_pages_mpol() for NUMA policy without vma Hugh Dickins
2023-10-19 20:39 ` [PATCH v3 " Hugh Dickins
2023-10-23 16:53 ` domenico cerasuolo
2023-10-23 17:53 ` Andrew Morton
2023-10-23 18:10 ` domenico cerasuolo
2023-10-23 19:05 ` Johannes Weiner
2023-10-23 19:48 ` Hugh Dickins
2023-10-24 6:44 ` [PATCH] mempolicy: alloc_pages_mpol() for NUMA policy without vma: fix Hugh Dickins
2023-10-24 8:17 ` kernel test robot
2023-10-24 15:56 ` Hugh Dickins
2023-10-24 16:09 ` [PATCH v2] " Hugh Dickins
2023-10-23 18:34 ` [PATCH v3 10/12] mempolicy: alloc_pages_mpol() for NUMA policy without vma Zi Yan
2023-10-23 21:10 ` Hugh Dickins
2023-10-23 21:13 ` Zi Yan
2023-10-03 9:27 ` [PATCH v2 11/12] mempolicy: mmap_lock is not needed while migrating folios Hugh Dickins
2023-10-03 9:29 ` [PATCH v2 12/12] mempolicy: migration attempt to match interleave nodes Hugh Dickins
2023-10-24 6:50 ` [PATCH] mempolicy: migration attempt to match interleave nodes: fix Hugh Dickins
2023-10-24 15:18 ` Liam R. Howlett
2023-10-24 16:32 ` Hugh Dickins
2023-10-24 16:45 ` Matthew Wilcox
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