From: Michal Hocko <mhocko@kernel.org>
To: js1304@gmail.com
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kernel-team@lge.com, Vlastimil Babka <vbabka@suse.cz>,
Christoph Hellwig <hch@infradead.org>,
Roman Gushchin <guro@fb.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH v3 7/8] mm/mempolicy: use a standard migration target allocation callback
Date: Thu, 25 Jun 2020 14:09:48 +0200 [thread overview]
Message-ID: <20200625120948.GH1320@dhcp22.suse.cz> (raw)
In-Reply-To: <1592892828-1934-8-git-send-email-iamjoonsoo.kim@lge.com>
On Tue 23-06-20 15:13:47, Joonsoo Kim wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
>
> There is a well-defined migration target allocation callback.
> Use it.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Michal Hocko <mhocko@suse.com>
> ---
> mm/internal.h | 1 -
> mm/mempolicy.c | 30 ++++++------------------------
> mm/migrate.c | 8 ++++++--
> 3 files changed, 12 insertions(+), 27 deletions(-)
>
> diff --git a/mm/internal.h b/mm/internal.h
> index fb7f7fe..4f9f6b6 100644
> --- a/mm/internal.h
> +++ b/mm/internal.h
> @@ -613,7 +613,6 @@ static inline bool is_migrate_highatomic_page(struct page *page)
> }
>
> void setup_zone_pageset(struct zone *zone);
> -extern struct page *alloc_new_node_page(struct page *page, unsigned long node);
>
> struct migration_target_control {
> int nid; /* preferred node id */
> diff --git a/mm/mempolicy.c b/mm/mempolicy.c
> index a3abf64..85a3f21 100644
> --- a/mm/mempolicy.c
> +++ b/mm/mempolicy.c
> @@ -1065,28 +1065,6 @@ static int migrate_page_add(struct page *page, struct list_head *pagelist,
> return 0;
> }
>
> -/* page allocation callback for NUMA node migration */
> -struct page *alloc_new_node_page(struct page *page, unsigned long node)
> -{
> - if (PageHuge(page)) {
> - return alloc_huge_page_nodemask(
> - page_hstate(compound_head(page)), node,
> - NULL, __GFP_THISNODE, false);
> - } else if (PageTransHuge(page)) {
> - struct page *thp;
> -
> - thp = alloc_pages_node(node,
> - (GFP_TRANSHUGE | __GFP_THISNODE),
> - HPAGE_PMD_ORDER);
> - if (!thp)
> - return NULL;
> - prep_transhuge_page(thp);
> - return thp;
> - } else
> - return __alloc_pages_node(node, GFP_HIGHUSER_MOVABLE |
> - __GFP_THISNODE, 0);
> -}
> -
> /*
> * Migrate pages from one node to a target node.
> * Returns error or the number of pages not migrated.
> @@ -1097,6 +1075,10 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
> nodemask_t nmask;
> LIST_HEAD(pagelist);
> int err = 0;
> + struct migration_target_control mtc = {
> + .nid = dest,
> + .gfp_mask = GFP_HIGHUSER_MOVABLE | __GFP_THISNODE,
> + };
>
> nodes_clear(nmask);
> node_set(source, nmask);
> @@ -1111,8 +1093,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest,
> flags | MPOL_MF_DISCONTIG_OK, &pagelist);
>
> if (!list_empty(&pagelist)) {
> - err = migrate_pages(&pagelist, alloc_new_node_page, NULL, dest,
> - MIGRATE_SYNC, MR_SYSCALL);
> + err = migrate_pages(&pagelist, alloc_migration_target, NULL,
> + (unsigned long)&mtc, MIGRATE_SYNC, MR_SYSCALL);
> if (err)
> putback_movable_pages(&pagelist);
> }
> diff --git a/mm/migrate.c b/mm/migrate.c
> index 7c4cd74..1c943b0 100644
> --- a/mm/migrate.c
> +++ b/mm/migrate.c
> @@ -1590,9 +1590,13 @@ static int do_move_pages_to_node(struct mm_struct *mm,
> struct list_head *pagelist, int node)
> {
> int err;
> + struct migration_target_control mtc = {
> + .nid = node,
> + .gfp_mask = GFP_HIGHUSER_MOVABLE | __GFP_THISNODE,
> + };
>
> - err = migrate_pages(pagelist, alloc_new_node_page, NULL, node,
> - MIGRATE_SYNC, MR_SYSCALL);
> + err = migrate_pages(pagelist, alloc_migration_target, NULL,
> + (unsigned long)&mtc, MIGRATE_SYNC, MR_SYSCALL);
> if (err)
> putback_movable_pages(pagelist);
> return err;
> --
> 2.7.4
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2020-06-25 12:09 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 6:13 [PATCH v3 0/8] clean-up the migration target allocation functions js1304
2020-06-23 6:13 ` [PATCH v3 1/8] mm/page_isolation: prefer the node of the source page js1304
2020-06-23 6:13 ` [PATCH v3 2/8] mm/migrate: move migration helper from .h to .c js1304
2020-06-23 6:13 ` [PATCH v3 3/8] mm/hugetlb: unify migration callbacks js1304
2020-06-24 21:18 ` Mike Kravetz
2020-06-25 11:26 ` Michal Hocko
2020-06-26 4:02 ` Joonsoo Kim
2020-07-02 16:13 ` Vlastimil Babka
2020-07-03 0:55 ` Joonsoo Kim
2020-06-23 6:13 ` [PATCH v3 4/8] mm/hugetlb: make hugetlb migration callback CMA aware js1304
2020-06-25 11:54 ` Michal Hocko
2020-06-26 4:49 ` Joonsoo Kim
2020-06-26 7:23 ` Michal Hocko
2020-06-29 6:27 ` Joonsoo Kim
2020-06-29 7:55 ` Michal Hocko
2020-06-30 6:30 ` Joonsoo Kim
2020-06-30 6:42 ` Michal Hocko
2020-06-30 7:22 ` Joonsoo Kim
2020-06-30 16:37 ` Mike Kravetz
2020-06-23 6:13 ` [PATCH v3 5/8] mm/migrate: make a standard migration target allocation function js1304
2020-06-25 12:05 ` Michal Hocko
2020-06-26 5:02 ` Joonsoo Kim
2020-06-26 7:33 ` Michal Hocko
2020-06-29 6:41 ` Joonsoo Kim
2020-06-29 8:03 ` Michal Hocko
2020-06-30 7:19 ` Joonsoo Kim
2020-07-03 15:25 ` Vlastimil Babka
2020-06-23 6:13 ` [PATCH v3 6/8] mm/gup: use a standard migration target allocation callback js1304
2020-06-25 12:08 ` Michal Hocko
2020-06-26 5:03 ` Joonsoo Kim
2020-07-03 15:56 ` Vlastimil Babka
2020-07-06 8:34 ` Joonsoo Kim
2020-06-23 6:13 ` [PATCH v3 7/8] mm/mempolicy: " js1304
2020-06-25 12:09 ` Michal Hocko [this message]
2020-07-03 15:59 ` Vlastimil Babka
[not found] ` <20200708012044.GC992@lca.pw>
2020-07-08 6:45 ` Michal Hocko
2020-10-08 3:21 ` Hugh Dickins
2020-10-08 17:29 ` Mike Kravetz
2020-10-09 5:50 ` Hugh Dickins
2020-10-09 17:42 ` Mike Kravetz
2020-10-09 22:23 ` Hugh Dickins
2020-10-10 0:25 ` Mike Kravetz
2020-06-23 6:13 ` [PATCH v3 8/8] mm/page_alloc: remove a wrapper for alloc_migration_target() js1304
2020-06-25 12:10 ` Michal Hocko
2020-07-03 16:18 ` Vlastimil Babka
2020-07-06 8:44 ` Joonsoo Kim
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