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Patch series "start removing writepage instances v2".
The VM doesn't need or want ->writepage for writeback and is fine with
just having ->writepages as long as ->migrate_folio is implemented.
This series removes all ->writepage instances that use
block_write_full_page directly and also have a plain mpage_writepages
based ->writepages.
This patch (of 7):
->writepage is a very inefficient method to write back data, and only used
through write_cache_pages or a a fallback when no ->migrate_folio method
is present.
Set ->migrate_folio to the generic buffer_head based helper, and remove
the ->writepage implementation.
Link: https://lkml.kernel.org/r/20221202102644.770505-1-hch@lst.de
Link: https://lkml.kernel.org/r/20221202102644.770505-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Bob Copeland <me@bobcopeland.com>
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: Jan Kara <jack@suse.com>
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
a117741221