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Message-Id: <20221202163815.22928-1-jack@suse.cz>
Date: Fri, 2 Dec 2022 19:39:25 +0100
From: Jan Kara <jack@...e.cz>
To: Ted Tso <tytso@....edu>
Cc: <linux-ext4@...r.kernel.org>,
Christoph Hellwig <hch@...radead.org>,
Ritesh Harjani <ritesh.list@...il.com>, Jan Kara <jack@...e.cz>
Subject: [PATCH v2 0/11] ext4: Stop using ext4_writepage() for writeout of ordered data
Hello,
this patch series modifies ext4 so that we stop using ext4_writepage() for
writeout of ordered data during transaction commit (through
generic_writepages() from jbd2_journal_submit_inode_data_buffers()). Instead we
directly call ext4_writepages() from the
ext4_journal_submit_inode_data_buffers(). This is part of Christoph's effort
to get rid of the .writepage() callback in all filesystems.
I have also modified ext4_writepages() to use write_cache_pages() instead of
generic_writepages() so now we don't expose .writepage hook at all. We still
keep ext4_writepage() as a callback for write_cache_pages(). We should refactor
that path as well and get rid of ext4_writepage() completely but that is for a
separate cleanup. Also note that jbd2 still uses generic_writepages() in its
jbd2_journal_submit_inode_data_buffers() helper because it is still used from
OCFS2. Again, something to be dealt with in a separate patchset.
Changes since v1:
* Added Reviewed-by tags from Ritesh
* Added patch to get rid of generic_writepages() in ext4_writepages()
* Added patch to get rid of .writepage hook
Honza
Previous versions:
Link: http://lore.kernel.org/r/20221130162435.2324-1-jack@suse.cz # v1
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