[PATCH v2] fs: btrfs: support sparse extents

[Tom Rini]

On Mon, Mar 30, 2020 at 06:48:42PM +0200, Marek Behún wrote:

> When logical address of a regular extent is 0, the extent is sparse and
> consists of all zeros.
> 
> Without this when sparse extents are used in a file reading fails with
>   Cannot map logical address 0 to physical
> 
> Signed-off-by: Marek Behún <marek.behun at nic.cz>

Applied to u-boot/master, thanks!

-- 
Tom
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