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(parent: aec21d3) | patch
block: implement BDRV_REQ_PREFETCH
authorVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Thu, 25 Jul 2019 10:05:48 +0000 (13:05 +0300)
committerEric Blake <eblake@redhat.com>
Thu, 15 Aug 2019 18:22:13 +0000 (13:22 -0500)
commit3299e5ecf7e1c9443189e50c949d97e536022c59
tree52a4758697875f4e52730b680a826a5a210ad931tree | snapshot
parentaec21d31756cbda4ad1d0fc5c60797d2c1eecf33commit | diff
block: implement BDRV_REQ_PREFETCH

Do effective copy-on-read request when we don't need data actually. It
will be used for block-stream and NBD_CMD_CACHE.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20190725100550.33801-2-vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[eblake: comment grammar fix]
Signed-off-by: Eric Blake <eblake@redhat.com>
block/io.c diff | blob | history
include/block/block.h diff | blob | history
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