linux-kernel - [PATCH 0/3] vmalloc() vs bulk allocator v2

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Message-Id: <20210516202056.2120-1-urezki@gmail.com>
Date:   Sun, 16 May 2021 22:20:53 +0200
From:   "Uladzislau Rezki (Sony)" <urezki@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
        Mel Gorman <mgorman@...e.de>,
        Matthew Wilcox <willy@...radead.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Uladzislau Rezki <urezki@...il.com>,
        Hillf Danton <hdanton@...a.com>,
        Michal Hocko <mhocko@...e.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: [PATCH 0/3] vmalloc() vs bulk allocator v2

Hi.

There are three patches in this small series. This is a second iteration.
First one was buggy and leaded to kernel panic due to passing NUMA_NO_NODE
as "nid" to the bulk allocator(it assumes to have a valid node). 

Therefore the patch number [1] adds an extra helper that guarantees a correct
numa node ID if it is not specified. Basically saying when it is invoked with
NUMA_NO_NODE.

A patch [2] has been slightly updated, the change-log is below.

V1 -> V2:
    - Switch to the alloc_pages_bulk_array_node() helper so the NUMA_NO_NODE
      is correctly handled(similar to alloc_pages_node() API func).
    - Use "while()" loop instead of "for()" for high-order pages and increase
      number of allocated pages after actual alloc.

Uladzislau Rezki (Sony) (3):
[1]  mm/page_alloc: Add an alloc_pages_bulk_array_node() helper
[2]  mm/vmalloc: Switch to bulk allocator in __vmalloc_area_node()
[3]  mm/vmalloc: Print a warning message first on failure

 include/linux/gfp.h |  9 ++++++
 mm/vmalloc.c        | 78 +++++++++++++++++++++++++--------------------
 2 files changed, 52 insertions(+), 35 deletions(-)

--
2.20.1