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authorEric Blake <eblake@redhat.com>2016-05-11 16:39:34 -0600
committerPaolo Bonzini <pbonzini@redhat.com>2016-06-16 18:39:04 +0200
commita0c303693ead8236a55a59097d75bd521f8212e2 (patch)
treecf5e0e2311a9db129e90f2b1c765cc62696917b0 /ui
parent37146e7eafafd121d80d68455b8f4bc9043a9f4f (diff)
nbd: Use BDRV_REQ_FUA for better FUA where supported
Rather than always flushing ourselves, let the block layer forward the FUA on to the underlying device - where all underlying layers also understand FUA, we are now more efficient; and where any underlying layer doesn't understand it, now the block layer takes care of the full flush fallback on our behalf. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1463006384-7734-2-git-send-email-eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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