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block: fix return code for partial write for Linux AIO 

Partial write most likely means that there is not space rather than
"something wrong happens". Thus it would be more natural to return
ENOSPC rather than EINVAL.

The problem actually happens with NBD server, which has reported EINVAL
rather then ENOSPC on the first error using its protocol, which makes
report to the user wrong.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Pavel Borzenkov <pborzenkov@virtuozzo.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
master
Denis V. Lunev 2016-06-23 14:37:16 +03:00 committed by Kevin Wolf
parent 5411541270
commit 1c42f149dd
1 changed files with 1 additions and 1 deletions
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2
block/linux-aio.c
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@ -87,7 +87,7 @@ static void qemu_laio_process_completion(struct qemu_laiocb *laiocb)
qemu_iovec_memset(laiocb->qiov, ret, 0,
laiocb->qiov->size - ret);
} else {
ret = -EINVAL;
ret = -ENOSPC;
}
}
}