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nbd/server: get rid of EAGAIN dead code 

For now nbd_read never returns EAGAIN. So, don't handle it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20170602150150.258222-7-vsementsov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-06-02 18:01:44 +03:00 committed by Paolo Bonzini
parent 572b97e722
commit 2a6e128bfa
1 changed files with 7 additions and 11 deletions
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18
nbd/server.c
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@ -997,11 +997,12 @@ static int nbd_co_send_reply(NBDRequestData *req, NBDReply *reply, int len)
return rc;
}
/* Collect a client request. Return 0 if request looks valid, -EAGAIN
* to keep trying the collection, -EIO to drop connection right away,
* and any other negative value to report an error to the client
* (although the caller may still need to disconnect after reporting
* the error). */
/* nbd_co_receive_request
* Collect a client request. Return 0 if request looks valid, -EIO to drop
* connection right away, and any other negative value to report an error to
* the client (although the caller may still need to disconnect after reporting
* the error).
*/
static int nbd_co_receive_request(NBDRequestData *req, NBDRequest *request)
{
NBDClient *client = req->client;
@ -1011,9 +1012,7 @@ static int nbd_co_receive_request(NBDRequestData *req, NBDRequest *request)
assert(client->recv_coroutine == qemu_coroutine_self());
rc = nbd_receive_request(client->ioc, request);
if (rc < 0) {
if (rc != -EAGAIN) {
rc = -EIO;
}
rc = -EIO;
goto out;
}
@ -1114,9 +1113,6 @@ static coroutine_fn void nbd_trip(void *opaque)
req = nbd_request_get(client);
ret = nbd_co_receive_request(req, &request);
if (ret == -EAGAIN) {
goto done;
}
if (ret == -EIO) {
goto out;
}