From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-ext4@vger.kernel.org, gfs2@lists.linux.dev,
linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org,
"Darrick J . Wong" <djwong@kernel.org>,
linux-erofs@lists.ozlabs.org, "Theodore Ts'o" <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Andreas Gruenbacher <agruenba@redhat.com>
Subject: [PATCH 0/3] Add folio_zero_tail() and folio_fill_tail()
Date: Tue, 7 Nov 2023 21:26:39 +0000 [thread overview]
Message-ID: <20231107212643.3490372-1-willy@infradead.org> (raw)
I'm trying to make it easier for filesystems with tailpacking /
stuffing / inline data to use folios. The primary function here is
folio_fill_tail(). You give it a pointer to memory where the data
currently is, and it takes care of copying it into the folio at that
offset. That works for gfs2 & iomap. Then There's Ext4. Rather than
gin up some kind of specialist "Here's a two pointers to two blocks
of memory" routine, just let it do its current thing, and let it call
folio_zero_tail(), which is also called by folio_fill_tail().
Other filesystems can be converted later; these ones seemed like good
examples as they're already partly or completely converted to folios.
Matthew Wilcox (Oracle) (3):
mm: Add folio_zero_tail() and use it in ext4
mm: Add folio_fill_tail() and use it in iomap
gfs2: Convert stuffed_readpage() to stuffed_read_folio()
fs/ext4/inline.c | 3 +-
fs/gfs2/aops.c | 37 +++++++++-----------
fs/iomap/buffered-io.c | 14 ++------
include/linux/highmem.h | 76 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 96 insertions(+), 34 deletions(-)
--
2.42.0
next reply other threads:[~2023-11-07 21:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-07 21:26 Matthew Wilcox (Oracle) [this message]
2023-11-07 21:26 ` [PATCH 1/3] mm: Add folio_zero_tail() and use it in ext4 Matthew Wilcox (Oracle)
2023-11-08 23:06 ` Andrew Morton
2023-11-09 0:12 ` Andreas Grünbacher
2023-11-09 17:27 ` Andrew Morton
2023-11-09 17:37 ` Matthew Wilcox
2023-11-09 21:50 ` Andreas Gruenbacher
2023-11-07 21:26 ` [PATCH 2/3] mm: Add folio_fill_tail() and use it in iomap Matthew Wilcox (Oracle)
2023-11-09 21:50 ` Andreas Gruenbacher
2023-11-10 17:09 ` Matthew Wilcox
2023-11-10 17:50 ` Andreas Grünbacher
2023-11-11 4:02 ` Gao Xiang
2023-11-07 21:26 ` [PATCH 3/3] gfs2: Convert stuffed_readpage() to stuffed_read_folio() Matthew Wilcox (Oracle)
2023-11-09 21:52 ` Andreas Gruenbacher
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