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btrfs: zoned: fix comment description for sb_write_pointer logic

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Fix the comment to represent the actual logic used for sb_write_pointer

- Empty[0] && In use[1] should be an invalid state instead of returning
  zone 0 wp
- Empty[0] && Full[1] should be returning zone 0 wp instead of zone 1 wp
- In use[0] && Empty[1] should be returning zone 0 wp instead of being an
  invalid state
- In use[0] && Full[1] should be returning zone 0 wp instead of returning
  zone 1 wp
- Full[0] && Empty[1] should be returning zone 1 wp instead of returning
  zone 0 wp
- Full[0] && In use[1] should be returning zone 1 wp instead of returning
  zone 0 wp

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Pankaj Raghav 2022-05-17 20:45:32 +02:00 committed by David Sterba
parent 143823cf4d
commit 31f3726980
1 changed files with 3 additions and 3 deletions
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6
fs/btrfs/zoned.c
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@ -94,9 +94,9 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones,
* Possible states of log buffer zones
*
* Empty[0] In use[0] Full[0]
* Empty[1] * x 0
* In use[1] 0 x 0
* Full[1] 1 1 C
* Empty[1] * 0 1
* In use[1] x x 1
* Full[1] 0 0 C
*
* Log position:
* *: Special case, no superblock is written