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authorEric Blake2021-02-03 15:14:15 +0100
committerEric Blake2021-02-03 15:14:15 +0100
commit8024726459f37ffcceebfc9e50ff8e5cc362f274 (patch)
treebd108aac6263042b135bcbe0f13cc578415ee338 /.gitmodules
parentblock/io: improve bdrv_check_request: check qiov too (diff)
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block: use int64_t as bytes type in tracked requests
We are generally moving to int64_t for both offset and bytes parameters on all io paths. Main motivation is realization of 64-bit write_zeroes operation for fast zeroing large disk chunks, up to the whole disk. We chose signed type, to be consistent with off_t (which is signed) and with possibility for signed return type (where negative value means error). All requests in block/io must not overflow BDRV_MAX_LENGTH, all external users of BdrvTrackedRequest already have corresponding assertions, so we are safe. Add some assertions still. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20201211183934.169161-9-vsementsov@virtuozzo.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
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