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(parent: 2f98910) | patch
sheepdog: Support BDRV_REQ_ZERO_WRITE for truncate
authorEric Blake <eblake@redhat.com>
Tue, 28 Apr 2020 20:29:01 +0000 (15:29 -0500)
committerKevin Wolf <kwolf@redhat.com>
Fri, 8 May 2020 11:26:35 +0000 (13:26 +0200)
commitfec00559e71c94749deac176f6c4bebf81fbe7b8
tree4fdc555d7dc44da42b85553038ae11ca220cdb91tree | snapshot
parent2f98910d5b89733b1a5df06c6d2a7056da32a7b7commit | diff
sheepdog: Support BDRV_REQ_ZERO_WRITE for truncate

Our .bdrv_has_zero_init_truncate always returns 1 because sheepdog
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: <20200428202905.770727-6-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block/sheepdog.c diff | blob | history
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