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From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
	Mel Gorman <mgorman@suse.de>,
	Matthew Wilcox <willy@infradead.org>,
	Nicholas Piggin <npiggin@gmail.com>,
	Uladzislau Rezki <urezki@gmail.com>,
	Hillf Danton <hdanton@sina.com>, Michal Hocko <mhocko@suse.com>,
	Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>,
	Steven Rostedt <rostedt@goodmis.org>
Subject: [PATCH 0/3] vmalloc() vs bulk allocator v2
Date: Sun, 16 May 2021 22:20:53 +0200	[thread overview]
Message-ID: <20210516202056.2120-1-urezki@gmail.com> (raw)

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


             reply	other threads:[~2021-05-16 20:21 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-16 20:20 Uladzislau Rezki (Sony) [this message]
2021-05-16 20:20 ` [PATCH 1/3] mm/page_alloc: Add an alloc_pages_bulk_array_node() helper Uladzislau Rezki (Sony)
2021-05-16 20:20 ` [PATCH 2/3] mm/vmalloc: Switch to bulk allocator in __vmalloc_area_node() Uladzislau Rezki (Sony)
2021-05-17  8:24   ` Mel Gorman
2021-05-17 11:51     ` Uladzislau Rezki
2021-05-19 13:44   ` Christoph Hellwig
2021-05-19 14:39     ` Uladzislau Rezki
2021-05-19 15:56       ` Mel Gorman
2021-05-19 19:52         ` Uladzislau Rezki
2021-05-19 21:07           ` Uladzislau Rezki
2021-06-28 23:00             ` Andrew Morton
2021-05-16 20:20 ` [PATCH 3/3] mm/vmalloc: Print a warning message first on failure Uladzislau Rezki (Sony)

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