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Date:   Thu, 22 Aug 2019 03:50:27 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Atish Patra <atish.patra@wdc.com>
Cc:     linux-kernel@vger.kernel.org, Albert Ou <aou@eecs.berkeley.edu>,
        linux-riscv@lists.infradead.org,
        Palmer Dabbelt <palmer@sifive.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Christoph Hellwig <hch@lst.de>,
        Anup Patel <Anup.Patel@wdc.com>,
        Andreas Schwab <schwab@linux-m68k.org>
Subject: Re: [PATCH v3 2/3] RISC-V: Issue a tlb page flush if possible
Message-ID: <20190822015027.GB11922@lst.de>
References: <20190822004644.25829-1-atish.patra@wdc.com> <20190822004644.25829-3-atish.patra@wdc.com>
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On Wed, Aug 21, 2019 at 05:46:43PM -0700, Atish Patra wrote:
> +		if (size <= PAGE_SIZE && size != -1)
> +			local_flush_tlb_page(start);
> +		else
> +			local_flush_tlb_all();

As Andreas pointed out (unsigned long)-1 is actually larger than
PAGE_SIZE, so we don't need the extra check.