commit | 4ce786914b745a144a9eda1ea33f3ff98328c527 | [log] [tgz] |
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author | Peter Lieven <pl@kamp.de> | Thu Oct 24 12:06:54 2013 +0200 |
committer | Kevin Wolf <kwolf@redhat.com> | Thu Nov 28 10:30:51 2013 +0100 |
tree | 2c20f0622ce18189318f265ab2224f7732b692fa | |
parent | e1a5c4bed44bc23f69f53883c657e31e150cab30 [diff] |
block: add wrappers for logical block provisioning information This adds 2 wrappers to read the unallocated_blocks_are_zero and can_write_zeroes_with_unmap info from the BDI. The wrappers are required to check for the existence of a backing_hd and if the devices are opened with the correct flags. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>