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From: Guenter Roeck <linux@roeck-us.net>
To: Uladzislau Rezki <urezki@gmail.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
	LKML <linux-kernel@vger.kernel.org>, Baoquan He <bhe@redhat.com>,
	Lorenzo Stoakes <lstoakes@gmail.com>,
	Christoph Hellwig <hch@infradead.org>,
	Matthew Wilcox <willy@infradead.org>,
	"Liam R . Howlett" <Liam.Howlett@oracle.com>,
	Dave Chinner <david@fromorbit.com>,
	"Paul E . McKenney" <paulmck@kernel.org>,
	Joel Fernandes <joel@joelfernandes.org>,
	Oleksiy Avramchenko <oleksiy.avramchenko@sony.com>
Subject: Re: [PATCH v3 07/11] mm: vmalloc: Offload free_vmap_area_lock lock
Date: Fri, 22 Mar 2024 13:53:11 -0700	[thread overview]
Message-ID: <8d0b5818-b3dc-4211-8cdf-92e7b76e0fe5@roeck-us.net> (raw)
In-Reply-To: <Zf3V6B9f5o0H1LnE@pc636>

On 3/22/24 12:03, Uladzislau Rezki wrote:
[ ... ]

> <snip>
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> index 22aa63f4ef63..0d77d171b5d9 100644
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -2343,6 +2343,9 @@ struct vmap_area *find_vmap_area(unsigned long addr)
>          struct vmap_area *va;
>          int i, j;
> 
> +       if (unlikely(!vmap_initialized))
> +               return NULL;
> +
>          /*
>           * An addr_to_node_id(addr) converts an address to a node index
>           * where a VA is located. If VA spans several zones and passed
> <snip>
> 
> Could you please test it?
> 

That fixes the problem.

Thanks,
Guenter



  reply	other threads:[~2024-03-22 20:53 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-02 18:46 [PATCH v3 00/11] Mitigate a vmap lock contention v3 Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 01/11] mm: vmalloc: Add va_alloc() helper Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 02/11] mm: vmalloc: Rename adjust_va_to_fit_type() function Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 03/11] mm: vmalloc: Move vmap_init_free_space() down in vmalloc.c Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 04/11] mm: vmalloc: Remove global vmap_area_root rb-tree Uladzislau Rezki (Sony)
2024-01-05  8:10   ` Wen Gu
2024-01-05 10:50     ` Uladzislau Rezki
2024-01-06  9:17       ` Wen Gu
2024-01-06 16:36         ` Uladzislau Rezki
2024-01-07  6:59           ` Hillf Danton
2024-01-08  7:45             ` Wen Gu
2024-01-08 18:37               ` Uladzislau Rezki
2024-01-16 23:25   ` Lorenzo Stoakes
2024-01-18 13:15     ` Uladzislau Rezki
2024-01-20 12:55       ` Lorenzo Stoakes
2024-01-22 17:44         ` Uladzislau Rezki
2024-01-02 18:46 ` [PATCH v3 05/11] mm/vmalloc: remove vmap_area_list Uladzislau Rezki (Sony)
2024-01-16 23:36   ` Lorenzo Stoakes
2024-01-02 18:46 ` [PATCH v3 06/11] mm: vmalloc: Remove global purge_vmap_area_root rb-tree Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 07/11] mm: vmalloc: Offload free_vmap_area_lock lock Uladzislau Rezki (Sony)
2024-01-03 11:08   ` Hillf Danton
2024-01-03 15:47     ` Uladzislau Rezki
2024-01-11  9:02   ` Dave Chinner
2024-01-11 15:54     ` Uladzislau Rezki
2024-01-11 20:37       ` Dave Chinner
2024-01-12 12:18         ` Uladzislau Rezki
2024-01-16 22:12           ` Dave Chinner
2024-01-18 18:15             ` Uladzislau Rezki
2024-02-08  0:25   ` Baoquan He
2024-02-08 13:57     ` Uladzislau Rezki
2024-02-28  9:48   ` Baoquan He
2024-02-28 10:39     ` Uladzislau Rezki
2024-02-28 12:26       ` Baoquan He
2024-03-22 18:21   ` Guenter Roeck
2024-03-22 19:03     ` Uladzislau Rezki
2024-03-22 20:53       ` Guenter Roeck [this message]
2024-01-02 18:46 ` [PATCH v3 08/11] mm: vmalloc: Support multiple nodes in vread_iter Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 09/11] mm: vmalloc: Support multiple nodes in vmallocinfo Uladzislau Rezki (Sony)
2024-01-02 18:46 ` [PATCH v3 10/11] mm: vmalloc: Set nr_nodes based on CPUs in a system Uladzislau Rezki (Sony)
2024-01-11  9:25   ` Dave Chinner
2024-01-15 19:09     ` Uladzislau Rezki
2024-01-16 22:06       ` Dave Chinner
2024-01-18 18:23         ` Uladzislau Rezki
2024-01-18 21:28           ` Dave Chinner
2024-01-19 10:32             ` Uladzislau Rezki
2024-01-02 18:46 ` [PATCH v3 11/11] mm: vmalloc: Add a shrinker to drain vmap pools Uladzislau Rezki (Sony)
2024-02-22  8:35 ` [PATCH v3 00/11] Mitigate a vmap lock contention v3 Uladzislau Rezki
2024-02-22 23:15   ` Pedro Falcato
2024-02-23  9:34     ` Uladzislau Rezki
2024-02-23 10:26       ` Baoquan He
2024-02-23 11:06         ` Uladzislau Rezki
2024-02-23 15:57           ` Baoquan He
2024-02-23 18:55             ` Uladzislau Rezki
2024-02-28  9:27               ` Baoquan He
2024-02-29 10:38                 ` Uladzislau Rezki

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