Re: [PATCH v3 15/19] maple_tree: Document erase and allocations better

Rik van Riel <[email protected]> Fri, 21 Aug 2026 15:34:29 -0400

Newsgroups	org.kvack.linux-mm,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

On Fri, 2026-08-21 at 15:26 -0400, Liam R. Howlett (Oracle) wrote:
> 
>  knowing one value within that range, or mtree_store() call with an
> entry of
> -NULL may be used to partially erase a range or many ranges at once.
> +NULL may be used to partially erase a range or many ranges at once. 
> Note that
> +mtree_erase() may use GFP_KERNEL | __GFP_NOFAIL for allocations and
> cannot
> +fail, but may need to sleep - do not use mtree_erase() from a
> blocking context.
> 

Do you mean "from a context that cannot block" ?

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