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由 Eric Blake 提交于
Another step towards killing off sector-based block APIs. Unlike write_zeroes, where we can be handed unaligned requests and must fail gracefully with -ENOTSUP for a fallback, we are guaranteed that discard requests are always aligned because the block layer already ignored unaligned head/tail. Signed-off-by: NEric Blake <eblake@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Message-id: 1468624988-423-13-git-send-email-eblake@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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