Re: [PATCH 15/26] range: Add range_overlaps()

[David Sterba]

On Sun, Mar 24, 2024 at 04:18:18PM -0700, Ira Weiny wrote:
> Code to support CXL Dynamic Capacity devices will have extent ranges
> which need to be compared for intersection not a subset as is being
> checked in range_contains().
> 
> range_overlaps() is defined in btrfs with a different meaning from what
> is required in the standard range code.  Dan Williams pointed this out
> in [1].  Adjust the btrfs call according to his suggestion there.
> 
> Then add a generic range_overlaps().
> 
> Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
> Cc: Chris Mason <clm@xxxxxx>
> Cc: Josef Bacik <josef@xxxxxxxxxxxxxx>
> Cc: David Sterba <dsterba@xxxxxxxx>
> Cc: linux-btrfs@xxxxxxxxxxxxxxx
> Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
> 
> [1] https://lore.kernel.org/all/65949f79ef908_8dc68294f2@xxxxxxxxxxxxxxxxxxxxxxxxx.notmuch/
> ---

>  fs/btrfs/ordered-data.c | 10 +++++-----

Acked-by: David Sterba <dsterba@xxxxxxxx>