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rbd: Support BDRV_REQ_ZERO_WRITE for truncate
authorEric Blake <eblake@redhat.com>
Tue, 28 Apr 2020 20:29:00 +0000 (15:29 -0500)
committerKevin Wolf <kwolf@redhat.com>
Fri, 8 May 2020 11:26:35 +0000 (13:26 +0200)
commit2f98910d5b89733b1a5df06c6d2a7056da32a7b7
tree0180454d051879f62437a25eaf286049b338d8f0tree | snapshot
parent8f23aaf5d6a5458e251c5d5d0555d9e515355e35commit | diff
rbd: Support BDRV_REQ_ZERO_WRITE for truncate

Our .bdrv_has_zero_init_truncate always returns 1 because rbd always
0-fills; we can use that same knowledge to implement
BDRV_REQ_ZERO_WRITE by ignoring it.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200428202905.770727-5-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block/rbd.c diff | blob | history
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