linux-kernel - Re: [PATCH] mm: add config for readahead window

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Date:   Mon, 19 Mar 2018 10:36:58 +0800
From:   "Huang\, Ying" <ying.huang@...el.com>
To:     Wei Wang <wvw@...gle.com>
Cc:     <gregkh@...uxfoundation.org>, Todd Poynor <toddpoynor@...gle.com>,
        "Wei Wang" <wei.vince.wang@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Michal Hocko <mhocko@...e.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Jan Kara <jack@...e.cz>,
        Jérôme Glisse <jglisse@...hat.com>,
        "Hugh Dickins" <hughd@...gle.com>,
        Matthew Wilcox <willy@...radead.org>,
        "Ingo Molnar" <mingo@...nel.org>,
        Sherry Cheung <SCheung@...dia.com>,
        "Oliver O'Halloran" <oohall@...il.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dennis Zhou <dennisz@...com>,
        "Pavel Tatashin" <pasha.tatashin@...cle.com>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm: add config for readahead window

Wei Wang <wvw@...gle.com> writes:

> Android devices boot time benefits by bigger readahead window setting from
> init. This patch will make readahead window a config so early boot can
> benefit by it as well.

Can you change the source code of init to call ioctl(BLKRASET) early?

Best Regards,
Huang, Ying