linux-kernel - Re: [PATCH 01/16] initrd: Add generic code path for common initrd unloading logic.

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Date:   Wed, 28 Mar 2018 05:04:40 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Shea Levy <shea@...alevy.com>
Cc:     linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-snps-arc@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org,
        uclinux-h8-devel@...ts.sourceforge.jp,
        linux-m68k@...ts.linux-m68k.org, nios2-dev@...ts.rocketboards.org,
        openrisc@...ts.librecores.org, linux-parisc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
        linux-sh@...r.kernel.org,
        user-mode-linux-devel@...ts.sourceforge.net
Subject: Re: [PATCH 01/16] initrd: Add generic code path for common initrd
 unloading logic.

> +#ifdef CONFIG_INITRAMFS_GENERIC_UNLOAD
> +void free_initrd_mem(unsigned long start, unsigned long end)
> +{
> +       free_reserved_area((void *)start, (void *)end, -1, "initrd");
> +}
> +#endif

Given how trivial this is and how many architectures can use it I'd
reverse the polarity and add a CONFIG_HAVE_ARCH_FREE_INITRD_MEM
instead.