linux-kernel - Re: [PATCH 15/26] range: Add range

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Message-ID: <34c1f5b4-8748-4886-b4ff-cfbf8dc71afa@wdc.com>
Date: Tue, 26 Mar 2024 12:51:14 +0000
From: Johannes Thumshirn <Johannes.Thumshirn@....com>
To: Ira Weiny <ira.weiny@...el.com>, Dave Jiang <dave.jiang@...el.com>, Fan Ni
	<fan.ni@...sung.com>, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Navneet
 Singh <navneet.singh@...el.com>
CC: Dan Williams <dan.j.williams@...el.com>, Davidlohr Bueso
	<dave@...olabs.net>, Alison Schofield <alison.schofield@...el.com>, Vishal
 Verma <vishal.l.verma@...el.com>, "linux-btrfs@...r.kernel.org"
	<linux-btrfs@...r.kernel.org>, "linux-cxl@...r.kernel.org"
	<linux-cxl@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, Chris Mason <clm@...com>, Josef Bacik
	<josef@...icpanda.com>, David Sterba <dsterba@...e.com>
Subject: Re: [PATCH 15/26] range: Add range_overlaps()

On 25.03.24 04:51, 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@...el.com>
> Cc: Chris Mason <clm@...com>
> Cc: Josef Bacik <josef@...icpanda.com>
> Cc: David Sterba <dsterba@...e.com>
> Cc: linux-btrfs@...r.kernel.org
> Signed-off-by: Ira Weiny <ira.weiny@...el.com>
> 
> [1] https://lore.kernel.org/all/65949f79ef908_8dc68294f2@dwillia2-xfh.jf.intel.com.notmuch/
> ---
>   fs/btrfs/ordered-data.c | 10 +++++-----
>   include/linux/range.h   |  7 +++++++
>   2 files changed, 12 insertions(+), 5 deletions(-)

For fs/btrfs/ordered-data.c:
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@....com>