btrfs: use bios instead of buffer_heads from super block writeout

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Similar to the superblock read path, change the write path to using bios
and pages instead of buffer_heads. This allows us to skip over the
buffer_head code, for writing the superblock to disk.

This is based on a patch originally authored by Nikolay Borisov.

Co-developed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Johannes Thumshirn 2020-02-14 00:24:33 +09:00 • committed by David Sterba

parent 8f32380d3f

commit 314b6dd0ee

1 changed files with 73 additions and 54 deletions

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fs/btrfs/disk-io.c

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