On 10/26/2016 01:26 PM, Mikulas Patocka wrote:
The brd driver refuses misaligned discard requests with an error. However,
this is suboptimal, misaligned requests could be handled by discarding a
part of the request that is aligned on a page boundary. This patch changes
the code so that it handles misaligned requests.
Hello Mikulas,
We do not want this kind of discard request processing in every block
driver. This is why I think that this kind of processing should be added
to the block layer. See also "[PATCH v3 0/5] Make blkdev_issue_discard()
submit aligned discard requests"
(http://www.spinics.net/lists/linux-block/msg02360.html).
Bart.
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