tree 3aea3c10cc10a200a511a845d7b42222e7c6d12a
parent 03671ded3078ebad1f0a701042622fd5e8918bc9
author Peter Lieven <pl@kamp.de> 1425379316 +0100
committer Max Reitz <mreitz@redhat.com> 1426522230 -0400

block/vpc: remove disabled code from get_sector_offset

The code to check the bitmap for the allocation status of each sector
has been "disabled by reason" ever since the vpc driver existed.

The reason might be that we might end up reading sector by sector
in vpc_read if we really used it. This would be a performance desaster.

The current code would furthermore not work if the disabled parts get
reactivated since vpc_read and vpc_write only use get_sector_offset to
check the allocation status of the first sector of a read/write operation.
This might lead to sectors incorrectly treated as zero in vpc_read and
to sectors getting allocated twice in vpc_write.

Signed-off-by: Peter Lieven <pl@kamp.de>
Message-id: 1425379316-19639-6-git-send-email-pl@kamp.de
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>