[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <87frporxtt.fsf@yhuang6-desk2.ccr.corp.intel.com>
Date: Wed, 25 Sep 2024 15:34:22 +0800
From: "Huang, Ying" <ying.huang@...el.com>
To: Qun-Wei Lin <qun-wei.lin@...iatek.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Matthias Brugger
<matthias.bgg@...il.com>, AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>, Ryan Roberts
<ryan.roberts@....com>, "David Hildenbrand" <david@...hat.com>, Chris Li
<chrisl@...nel.org>, "Matthew Wilcox (Oracle)" <willy@...radead.org>, Al
Viro <viro@...iv.linux.org.uk>, "Dan Schatzberg"
<schatzberg.dan@...il.com>, Kairui Song <kasong@...cent.com>, Barry Song
<baohua@...nel.org>, Jens Axboe <axboe@...nel.dk>,
<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>, <linux-block@...r.kernel.org>,
Casper Li <casper.li@...iatek.com>, "Chinwen Chang"
<chinwen.chang@...iatek.com>, Andrew Yang <andrew.yang@...iatek.com>,
John Hsu <john.hsu@...iatek.com>, <wsd_upstream@...iatek.com>
Subject: Re: [PATCH 0/2] Add BLK_FEAT_READ_SYNCHRONOUS and
SWP_READ_SYNCHRONOUS_IO
Qun-Wei Lin <qun-wei.lin@...iatek.com> writes:
> This patchset introduces 2 new feature flags, BLK_FEAT_READ_SYNCHRONOUS and
> SWP_READ_SYNCHRONOUS_IO.
>
> These changes are motivated by the need to better accommodate certain swap
> devices that support synchronous read operations but asynchronous write
> operations.
>
> The existing BLK_FEAT_SYNCHRONOUS and SWP_SYNCHRONOUS_IO flags are not
> sufficient for these devices, as they enforce synchronous behavior for both
> read and write operations.
Which kind of device needs this? Read fast, but write slow?
--
Best Regards,
Huang, Ying
Powered by blists - more mailing lists