Re: [PATCH] mm: refactor mm_access() to not return NULL

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To: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Subject: Re: [PATCH] mm: refactor mm_access() to not return NULL
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Tue, 24 Sep 2024 21:13:52 +0100
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Arnd Bergmann <arnd@xxxxxxxx>
In-reply-to: <20240924201023.193135-1-lorenzo.stoakes@oracle.com>
References: <20240924201023.193135-1-lorenzo.stoakes@oracle.com>

On Tue, Sep 24, 2024 at 09:10:23PM +0100, Lorenzo Stoakes wrote:
> +	if (IS_ERR(mm))
> +		return PTR_ERR(mm) == -ESRCH ? NULL : mm;

	Pet peeve: what's wrong with mm == ERR_PTR(-ESRCH)?

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