btrfs: submit a writeback bio per extent_buffer

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[ Upstream commit 50b21d7a06 ]

Stop trying to cluster writes of multiple extent_buffers into a single
bio.  There is no need for that as the blk_plug mechanism used all the
way up in writeback_inodes_wb gives us the same I/O pattern even with
multiple bios.  Removing the clustering simplifies
lock_extent_buffer_for_io a lot and will also allow passing the eb
as private data to the end I/O handler.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Stable-dep-of: 7027f87108 ("btrfs: don't treat zoned writeback as being from an async helper thread")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Christoph Hellwig 2023-05-03 17:24:31 +02:00 • committed by Greg Kroah-Hartman

parent aea3cea8ea

commit 6db5fffba5

1 changed files with 37 additions and 65 deletions

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fs/btrfs/extent_io.c

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