From: Feng Tang <feng.tang@intel.com>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>,
David Rientjes <rientjes@google.com>,
Dave Hansen <dave.hansen@intel.com>,
Ben Widawsky <ben.widawsky@intel.com>
Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
Andrea Arcangeli <aarcange@redhat.com>,
Mel Gorman <mgorman@techsingularity.net>,
Mike Kravetz <mike.kravetz@oracle.com>,
Randy Dunlap <rdunlap@infradead.org>,
Vlastimil Babka <vbabka@suse.cz>, Andi Kleen <ak@linux.intel.com>,
Dan Williams <dan.j.williams@intel.com>,
ying.huang@intel.com, Feng Tang <feng.tang@intel.com>
Subject: [PATCH v6 3/6] mm/mempolicy: enable page allocation for MPOL_PREFERRED_MANY for general cases
Date: Mon, 12 Jul 2021 16:09:31 +0800 [thread overview]
Message-ID: <1626077374-81682-4-git-send-email-feng.tang@intel.com> (raw)
In-Reply-To: <1626077374-81682-1-git-send-email-feng.tang@intel.com>
From: Ben Widawsky <ben.widawsky@intel.com>
In order to support MPOL_PREFERRED_MANY which is used by
set_mempolicy(2), mbind(2), enable both alloc_pages() and
alloc_pages_vma() by using alloc_page_preferred_many().
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
---
mm/mempolicy.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d17bf018efcc..9dce67fc9bb6 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2207,6 +2207,12 @@ struct page *alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma,
goto out;
}
+ if (pol->mode == MPOL_PREFERRED_MANY) {
+ page = alloc_page_preferred_many(gfp, order, pol);
+ mpol_cond_put(pol);
+ goto out;
+ }
+
if (unlikely(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hugepage)) {
int hpage_node = node;
@@ -2286,6 +2292,8 @@ struct page *alloc_pages(gfp_t gfp, unsigned order)
*/
if (pol->mode == MPOL_INTERLEAVE)
page = alloc_page_interleave(gfp, order, interleave_nodes(pol));
+ else if (pol->mode == MPOL_PREFERRED_MANY)
+ page = alloc_page_preferred_many(gfp, order, pol);
else
page = __alloc_pages(gfp, order,
policy_node(gfp, pol, numa_node_id()),
--
2.7.4
next prev parent reply other threads:[~2021-07-12 8:09 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-12 8:09 [PATCH v6 0/6] Introduce multi-preference mempolicy Feng Tang
2021-07-12 8:09 ` [PATCH v6 1/6] mm/mempolicy: Add MPOL_PREFERRED_MANY for multiple preferred nodes Feng Tang
2021-07-28 12:31 ` Michal Hocko
2021-07-28 14:11 ` Feng Tang
2021-07-28 16:12 ` Michal Hocko
2021-07-29 7:09 ` Feng Tang
2021-07-29 13:38 ` Michal Hocko
2021-07-29 15:12 ` Feng Tang
2021-07-29 16:21 ` Michal Hocko
2021-07-30 3:05 ` Feng Tang
2021-07-30 6:36 ` Michal Hocko
2021-07-30 7:18 ` Feng Tang
2021-07-30 7:38 ` Michal Hocko
2021-08-02 8:11 ` Feng Tang
2021-08-02 11:14 ` Michal Hocko
2021-08-02 11:33 ` Feng Tang
2021-08-02 11:47 ` Michal Hocko
2021-07-12 8:09 ` [PATCH v6 2/6] mm/memplicy: add page allocation function for MPOL_PREFERRED_MANY policy Feng Tang
2021-07-28 12:42 ` Michal Hocko
2021-07-28 15:18 ` Feng Tang
2021-07-28 15:25 ` Feng Tang
2021-07-28 16:15 ` Michal Hocko
2021-07-28 16:14 ` Michal Hocko
2021-07-12 8:09 ` Feng Tang [this message]
2021-07-12 8:09 ` [PATCH v6 4/6] mm/hugetlb: add support for mempolicy MPOL_PREFERRED_MANY Feng Tang
2021-07-21 20:49 ` Mike Kravetz
2021-07-22 8:11 ` Feng Tang
2021-07-22 9:42 ` Michal Hocko
2021-07-22 16:21 ` Mike Kravetz
2021-07-12 8:09 ` [PATCH v6 5/6] mm/mempolicy: Advertise new MPOL_PREFERRED_MANY Feng Tang
2021-07-28 12:47 ` Michal Hocko
2021-07-28 13:41 ` Feng Tang
2021-07-12 8:09 ` [PATCH v6 6/6] mm/mempolicy: unify the create() func for bind/interleave/prefer-many policies Feng Tang
2021-07-28 12:51 ` Michal Hocko
2021-07-28 13:50 ` Feng Tang
2021-07-15 0:15 ` [PATCH v6 0/6] Introduce multi-preference mempolicy Andrew Morton
2021-07-15 2:13 ` Feng Tang
2021-07-15 18:49 ` Dave Hansen
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