linux-kernel - Re: [PATCH v3 bpf RESEND 2/4] page_alloc: use __vmalloc

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Message-ID: <YlkRY8QfAdNk+Oso@infradead.org>
Date:   Thu, 14 Apr 2022 23:32:03 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Song Liu <song@...nel.org>
Cc:     bpf@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
        kernel-team@...com, akpm@...ux-foundation.org,
        rick.p.edgecombe@...el.com, hch@...radead.org,
        imbrenda@...ux.ibm.com, mcgrof@...nel.org
Subject: Re: [PATCH v3 bpf RESEND 2/4] page_alloc: use __vmalloc_huge for
 large system hash

On Thu, Apr 14, 2022 at 12:59:12PM -0700, Song Liu wrote:
> Use __vmalloc_huge() in alloc_large_system_hash() so that large system
> hash (>= PMD_SIZE) could benefit from huge pages. Note that __vmalloc_huge
> only allocates huge pages for systems with HAVE_ARCH_HUGE_VMALLOC.

Looks good (modulo the possible naming chane suggested in patch 1):

Reviewed-by: Christoph Hellwig <hch@....de>