From: Luis Chamberlain <mcgrof@kernel.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: axboe@kernel.dk, agk@redhat.com, snitzer@kernel.org,
philipp.reisner@linbit.com, lars.ellenberg@linbit.com,
christoph.boehmwalder@linbit.com, hch@infradead.org,
djwong@kernel.org, minchan@kernel.org, senozhatsky@chromium.org,
patches@lists.linux.dev, linux-block@vger.kernel.org,
linux-mm@kvack.org, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org, dm-devel@redhat.com,
drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org,
hare@suse.de, p.raghav@samsung.com, da.gomez@samsung.com,
kbusch@kernel.org
Subject: Re: [PATCH 3/5] iomap: simplify iomap_init() with PAGE_SECTORS
Date: Fri, 21 Apr 2023 15:02:30 -0700 [thread overview]
Message-ID: <ZEMH9h/cd9Cp1t+X@bombadil.infradead.org> (raw)
In-Reply-To: <ZELuiBNNHTk4EdxH@casper.infradead.org>
On Fri, Apr 21, 2023 at 09:14:00PM +0100, Matthew Wilcox wrote:
> On Fri, Apr 21, 2023 at 12:58:05PM -0700, Luis Chamberlain wrote:
> > Just use the PAGE_SECTORS generic define. This produces no functional
> > changes. While at it use left shift to simplify this even further.
>
> How is FOO << 2 simpler than FOO * 4?
>
> > - return bioset_init(&iomap_ioend_bioset, 4 * (PAGE_SIZE / SECTOR_SIZE),
> > + return bioset_init(&iomap_ioend_bioset, PAGE_SECTORS << 2,
We could just do:
- return bioset_init(&iomap_ioend_bioset, 4 * (PAGE_SIZE / SECTOR_SIZE),
+ return bioset_init(&iomap_ioend_bioset, 4 * PAGE_SECTORS,
The shift just seemed optimal if we're just going to change it.
Luis
next prev parent reply other threads:[~2023-04-21 22:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-21 19:58 [PATCH 0/5] block: simplify with PAGE_SECTORS_SHIFT Luis Chamberlain
2023-04-21 19:58 ` [PATCH 1/5] dm integrity: simplify by using PAGE_SECTORS_SHIFT Luis Chamberlain
2023-04-21 20:15 ` Matthew Wilcox
2023-04-21 19:58 ` [PATCH 2/5] drbd: use PAGE_SECTORS_SHIFT and PAGE_SECTORS Luis Chamberlain
2023-04-24 8:26 ` Christoph Böhmwalder
2023-04-21 19:58 ` [PATCH 3/5] iomap: simplify iomap_init() with PAGE_SECTORS Luis Chamberlain
2023-04-21 20:14 ` Matthew Wilcox
2023-04-21 22:02 ` Luis Chamberlain [this message]
2023-04-21 22:24 ` Jens Axboe
2023-04-21 22:30 ` Luis Chamberlain
2023-04-21 22:36 ` Jens Axboe
2023-04-21 22:34 ` Dave Chinner
2023-04-24 5:55 ` Christoph Hellwig
2023-04-21 19:58 ` [PATCH 4/5] dm bufio: simplify by using PAGE_SECTORS_SHIFT Luis Chamberlain
2023-04-21 19:58 ` [PATCH 5/5] zram: use generic PAGE_SECTORS and PAGE_SECTORS_SHIFT Luis Chamberlain
2023-04-24 2:36 ` Sergey Senozhatsky
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