From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
hch@infradead.org, willy@infradead.org, Chris Mason <clm@fb.com>,
Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org
Subject: Re: [RFC PATCH 3/9] btrfs: use set/clear_fs_page_private
Date: Sun, 26 Apr 2020 22:54:28 -0700 [thread overview]
Message-ID: <20200427055428.GB16709@infradead.org> (raw)
In-Reply-To: <20200426222054.GA2005@dread.disaster.area>
On Mon, Apr 27, 2020 at 08:20:54AM +1000, Dave Chinner wrote:
> > void set_page_extent_mapped(struct page *page)
> > {
> > - if (!PagePrivate(page)) {
> > - SetPagePrivate(page);
> > - get_page(page);
> > - set_page_private(page, EXTENT_PAGE_PRIVATE);
> > - }
> > + if (!PagePrivate(page))
> > + set_fs_page_private(page, (void *)EXTENT_PAGE_PRIVATE);
>
> Change the definition of EXTENT_PAGE_PRIVATE so the cast is not
> needed? Nothing ever reads EXTENT_PAGE_PRIVATE; it's only there to
> set the private flag for other code to check and release the extent
> mapping reference to the page...
IIRC there as a patch on the btrfs list to remove EXTENT_PAGE_PRIVATE,
it might be better to not bother changing it. Maybe the btrfs
maintainers remember this better.
next prev parent reply other threads:[~2020-04-27 5:54 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-26 21:49 [RFC PATCH 0/9] Introduce set/clear_fs_page_private to cleanup code Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 1/9] include/linux/pagemap.h: introduce set/clear_fs_page_private Guoqing Jiang
2020-04-27 5:52 ` Christoph Hellwig
2020-04-27 8:10 ` Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 2/9] md: remove __clear_page_buffers and use set/clear_fs_page_private Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 3/9] btrfs: " Guoqing Jiang
2020-04-26 22:20 ` Dave Chinner
2020-04-27 5:54 ` Christoph Hellwig [this message]
2020-04-27 12:27 ` David Sterba
2020-04-27 8:14 ` Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 4/9] fs/buffer.c: " Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 5/9] f2fs: " Guoqing Jiang
2020-04-27 2:22 ` Chao Yu
2020-04-27 8:10 ` Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 6/9] iomap: " Guoqing Jiang
2020-04-27 0:26 ` Matthew Wilcox
2020-04-27 5:55 ` Christoph Hellwig
2020-04-27 8:15 ` Guoqing Jiang
2020-04-27 8:15 ` Guoqing Jiang
2020-04-27 5:57 ` Christoph Hellwig
2020-04-27 8:12 ` Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 7/9] ntfs: replace attach_page_buffers with set_fs_page_private Guoqing Jiang
2020-04-26 21:49 ` [RFC PATCH 8/9] orangefs: use set/clear_fs_page_private Guoqing Jiang
2020-04-26 22:24 ` Dave Chinner
2020-04-27 0:12 ` Matthew Wilcox
2020-04-27 2:27 ` Dave Chinner
2020-04-27 8:18 ` Guoqing Jiang
2020-04-27 2:58 ` Gao Xiang
2020-04-27 3:27 ` Gao Xiang
2020-04-26 21:49 ` [RFC PATCH 9/9] buffer_head.h: remove attach_page_buffers Guoqing Jiang
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