btrfs: zoned: cache if block group is on a sequential zone

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On a zoned filesystem, cache if a block group is on a sequential write
only zone.

On sequential write only zones, we can use REQ_OP_ZONE_APPEND for
writing data, therefore provide btrfs_use_zone_append() to figure out if
IO is targeting a sequential write only zone and we can use
REQ_OP_ZONE_APPEND for data writing.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
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 2021-02-04 19:22:03 +09:00 • committed by David Sterba

parent 138082f366

commit 08f455593f

3 changed files with 38 additions and 0 deletions

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3

fs/btrfs/block-group.h

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29

fs/btrfs/zoned.c

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6

fs/btrfs/zoned.h

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