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Message-Id: <20220613053715.2394147-1-hch@lst.de>
Date:   Mon, 13 Jun 2022 07:37:09 +0200
From:   Christoph Hellwig <hch@....de>
To:     Matthew Wilcox <willy@...radead.org>, Jan Kara <jack@...e.com>,
        Dave Kleikamp <shaggy@...nel.org>,
        Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Cc:     linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, jfs-discussion@...ts.sourceforge.net,
        ntfs3@...ts.linux.dev
Subject: remove the nobh helpers v2

Hi all,

this series (against the pagecache for-next branch) removes the nobh
helpers which are a variant of the "normal" buffer head helpers with
special tradeoffs for machines with a lot of highmem, and thus rather
obsolete.  They pass xfstests, or in case of jfs at least get as far
as the baseline.

This might not be as nice as an actual iomap conversion, but already
removes some hairy code in the way of removing ->writepage.

Changes since v1:
 - handle non-resident data in ->writepages in ntfs3 properly

Diffstat:
 Documentation/filesystems/ext2.rst |    2 
 fs/buffer.c                        |  324 -------------------------------------
 fs/ext2/ext2.h                     |    1 
 fs/ext2/inode.c                    |   51 -----
 fs/ext2/namei.c                    |   10 -
 fs/ext2/super.c                    |    6 
 fs/jfs/inode.c                     |   18 +-
 fs/mpage.c                         |   47 -----
 fs/ntfs3/inode.c                   |    8 
 include/linux/buffer_head.h        |    8 
 include/linux/mpage.h              |    2 
 11 files changed, 32 insertions(+), 445 deletions(-)

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