From: Zhen Lei <thunder.leizhen@huawei.com>
To: Minchan Kim <minchan@kernel.org>, Nitin Gupta <ngupta@vflare.org>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Jens Axboe <axboe@kernel.dk>,
linux-block <linux-block@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm <linux-mm@kvack.org>, Alasdair Kergon <agk@redhat.com>,
Mike Snitzer <snitzer@redhat.com>, dm-devel <dm-devel@redhat.com>,
Song Liu <song@kernel.org>,
linux-raid <linux-raid@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Subject: [PATCH 0/4] eliminate SECTOR related magic numbers and duplicated conversions
Date: Tue, 5 May 2020 19:55:39 +0800 [thread overview]
Message-ID: <20200505115543.1660-1-thunder.leizhen@huawei.com> (raw)
When I studied the code of mm/swap, I found "1 << (PAGE_SHIFT - 9)" appears
many times. So I try to clean up it.
1. Replace "1 << (PAGE_SHIFT - 9)" or similar with SECTORS_PER_PAGE
2. Replace "PAGE_SHIFT - 9" with SECTORS_PER_PAGE_SHIFT
3. Replace "9" with SECTOR_SHIFT
4. Replace "512" with SECTOR_SIZE
No functional change.
Zhen Lei (4):
block: Move SECTORS_PER_PAGE and SECTORS_PER_PAGE_SHIFT definitions
into <linux/blkdev.h>
mm/swap: use SECTORS_PER_PAGE_SHIFT to clean up code
block: use SECTORS_PER_PAGE_SHIFT and SECTORS_PER_PAGE to clean up
code
mtd: eliminate SECTOR related magic numbers
block/blk-settings.c | 8 ++++----
block/partitions/core.c | 4 ++--
drivers/block/zram/zram_drv.h | 2 --
drivers/md/dm-table.c | 2 +-
drivers/md/raid1.c | 4 ++--
drivers/md/raid10.c | 10 +++++-----
drivers/md/raid5-cache.c | 10 +++++-----
include/linux/blkdev.h | 10 ++++++++--
mm/page_io.c | 4 ++--
mm/swapfile.c | 12 ++++++------
10 files changed, 35 insertions(+), 31 deletions(-)
--
2.26.0.106.g9fadedd
next reply other threads:[~2020-05-05 11:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-05 11:55 Zhen Lei [this message]
2020-05-05 11:55 ` [PATCH 1/4] block: Move SECTORS_PER_PAGE and SECTORS_PER_PAGE_SHIFT definitions into <linux/blkdev.h> Zhen Lei
2020-05-05 12:10 ` Matthew Wilcox
2020-05-06 4:06 ` Leizhen (ThunderTown)
2020-05-05 11:55 ` [PATCH 2/4] mm/swap: use SECTORS_PER_PAGE_SHIFT to clean up code Zhen Lei
2020-05-05 17:25 ` Matthew Wilcox
2020-05-06 1:33 ` Leizhen (ThunderTown)
2020-05-06 3:47 ` Leizhen (ThunderTown)
2020-05-06 9:16 ` Leizhen (ThunderTown)
2020-05-05 11:55 ` [PATCH 3/4] block: use SECTORS_PER_PAGE_SHIFT and SECTORS_PER_PAGE " Zhen Lei
2020-05-05 11:55 ` [PATCH 4/4] mtd: eliminate SECTOR related magic numbers Zhen Lei
2020-05-05 17:32 ` [PATCH 0/4] eliminate SECTOR related magic numbers and duplicated conversions antlists
2020-05-05 18:01 ` Matthew Wilcox
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