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btrfs: fix comment for btrfs ordered extent flag bits

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There is small error in comment about BTRFS_ORDERED_* flags, added in
commit 3c198fe064 ("btrfs: rework the order of
btrfs_ordered_extent::flags") but the fixup did not get merged in time.

The 4 types are for ordered extent itself, not for direct io.
Only 3 types support direct io, REGULAR/NOCOW/PREALLOC.

Fix the comment to reflect that.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2021-02-11 16:14:05 +08:00 committed by David Sterba
parent bf05bf16c7
commit 0b3dcd131d
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/ordered-data.h
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@ -39,8 +39,8 @@ struct btrfs_ordered_sum {
*/
enum {
/*
* Different types for direct io, one and only one of the 4 type can
* be set when creating ordered extent.
* Different types for ordered extents, one and only one of the 4 types
* need to be set when creating ordered extent.
*
* REGULAR: For regular non-compressed COW write
* NOCOW: For NOCOW write into existing non-hole extent