On 12/21/20 10:49 PM, Naohiro Aota wrote:
btrfs_rmap_block currently reverse-maps the physical addresses on all
devices to the corresponding logical addresses.
This commit extends the function to match to a specified device. The old
functionality of querying all devices is left intact by specifying NULL as
target device.
We pass block_device instead of btrfs_device to __btrfs_rmap_block. This
function is intended to reverse-map the result of bio, which only have
block_device.
This commit also exports the function for later use.
Signed-off-by: Naohiro Aota <naohiro.a...@wdc.com>
Reviewed-by: Josef Bacik <jo...@toxicpanda.com>
Thanks,
Josef
