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nbd: mark more coroutine_fns 

Several coroutine functions in block/nbd.c are not marked as such.  This
patch adds a few more markers; it is not exhaustive, but it focuses
especially on:

- places that wake other coroutines, because aio_co_wake() has very
different semantics inside a coroutine (queuing after yield vs. entering
immediately);

- functions with _co_ in their names, to avoid confusion

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414175756.671165-3-pbonzini@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Lukas Straub <lukasstraub2@web.de>
Signed-off-by: Eric Blake <eblake@redhat.com>
master
Paolo Bonzini 2022-04-14 19:57:49 +02:00 committed by Eric Blake
parent 8846b7d1c1
commit 0c43c6fc89
1 changed files with 32 additions and 32 deletions
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64
block/nbd.c
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@ -132,7 +132,7 @@ static bool nbd_client_connected(BDRVNBDState *s)
return qatomic_load_acquire(&s->state) == NBD_CLIENT_CONNECTED;
}
static bool nbd_recv_coroutine_wake_one(NBDClientRequest *req)
static bool coroutine_fn nbd_recv_coroutine_wake_one(NBDClientRequest *req)
{
if (req->receiving) {
req->receiving = false;
@ -143,7 +143,7 @@ static bool nbd_recv_coroutine_wake_one(NBDClientRequest *req)
return false;
}
static void nbd_recv_coroutines_wake(BDRVNBDState *s, bool all)
static void coroutine_fn nbd_recv_coroutines_wake(BDRVNBDState *s, bool all)
{
int i;
@ -154,7 +154,7 @@ static void nbd_recv_coroutines_wake(BDRVNBDState *s, bool all)
}
}
static void nbd_channel_error(BDRVNBDState *s, int ret)
static void coroutine_fn nbd_channel_error(BDRVNBDState *s, int ret)
{
if (nbd_client_connected(s)) {
qio_channel_shutdown(s->ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
@ -466,9 +466,9 @@ static coroutine_fn int nbd_receive_replies(BDRVNBDState *s, uint64_t handle)
}
}
static int nbd_co_send_request(BlockDriverState *bs,
NBDRequest *request,
QEMUIOVector *qiov)
static int coroutine_fn nbd_co_send_request(BlockDriverState *bs,
NBDRequest *request,
QEMUIOVector *qiov)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
int rc, i = -1;
@ -721,9 +721,9 @@ static int nbd_parse_error_payload(NBDStructuredReplyChunk *chunk,
return 0;
}
static int nbd_co_receive_offset_data_payload(BDRVNBDState *s,
uint64_t orig_offset,
QEMUIOVector *qiov, Error **errp)
static int coroutine_fn
nbd_co_receive_offset_data_payload(BDRVNBDState *s, uint64_t orig_offset,
QEMUIOVector *qiov, Error **errp)
{
QEMUIOVector sub_qiov;
uint64_t offset;
@ -1039,8 +1039,8 @@ break_loop:
return false;
}
static int nbd_co_receive_return_code(BDRVNBDState *s, uint64_t handle,
int *request_ret, Error **errp)
static int coroutine_fn nbd_co_receive_return_code(BDRVNBDState *s, uint64_t handle,
int *request_ret, Error **errp)
{
NBDReplyChunkIter iter;
@ -1053,9 +1053,9 @@ static int nbd_co_receive_return_code(BDRVNBDState *s, uint64_t handle,
return iter.ret;
}
static int nbd_co_receive_cmdread_reply(BDRVNBDState *s, uint64_t handle,
uint64_t offset, QEMUIOVector *qiov,
int *request_ret, Error **errp)
static int coroutine_fn nbd_co_receive_cmdread_reply(BDRVNBDState *s, uint64_t handle,
uint64_t offset, QEMUIOVector *qiov,
int *request_ret, Error **errp)
{
NBDReplyChunkIter iter;
NBDReply reply;
@ -1105,10 +1105,10 @@ static int nbd_co_receive_cmdread_reply(BDRVNBDState *s, uint64_t handle,
return iter.ret;
}
static int nbd_co_receive_blockstatus_reply(BDRVNBDState *s,
uint64_t handle, uint64_t length,
NBDExtent *extent,
int *request_ret, Error **errp)
static int coroutine_fn nbd_co_receive_blockstatus_reply(BDRVNBDState *s,
uint64_t handle, uint64_t length,
NBDExtent *extent,
int *request_ret, Error **errp)
{
NBDReplyChunkIter iter;
NBDReply reply;
@ -1165,8 +1165,8 @@ static int nbd_co_receive_blockstatus_reply(BDRVNBDState *s,
return iter.ret;
}
static int nbd_co_request(BlockDriverState *bs, NBDRequest *request,
QEMUIOVector *write_qiov)
static int coroutine_fn nbd_co_request(BlockDriverState *bs, NBDRequest *request,
QEMUIOVector *write_qiov)
{
int ret, request_ret;
Error *local_err = NULL;
@ -1202,9 +1202,9 @@ static int nbd_co_request(BlockDriverState *bs, NBDRequest *request,
return ret ? ret : request_ret;
}
static int nbd_client_co_preadv(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
static int coroutine_fn nbd_client_co_preadv(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
int ret, request_ret;
Error *local_err = NULL;
@ -1261,9 +1261,9 @@ static int nbd_client_co_preadv(BlockDriverState *bs, int64_t offset,
return ret ? ret : request_ret;
}
static int nbd_client_co_pwritev(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
static int coroutine_fn nbd_client_co_pwritev(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = {
@ -1286,8 +1286,8 @@ static int nbd_client_co_pwritev(BlockDriverState *bs, int64_t offset,
return nbd_co_request(bs, &request, qiov);
}
static int nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
int64_t bytes, BdrvRequestFlags flags)
static int coroutine_fn nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
int64_t bytes, BdrvRequestFlags flags)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = {
@ -1321,7 +1321,7 @@ static int nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
return nbd_co_request(bs, &request, NULL);
}
static int nbd_client_co_flush(BlockDriverState *bs)
static int coroutine_fn nbd_client_co_flush(BlockDriverState *bs)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = { .type = NBD_CMD_FLUSH };
@ -1336,8 +1336,8 @@ static int nbd_client_co_flush(BlockDriverState *bs)
return nbd_co_request(bs, &request, NULL);
}
static int nbd_client_co_pdiscard(BlockDriverState *bs, int64_t offset,
int64_t bytes)
static int coroutine_fn nbd_client_co_pdiscard(BlockDriverState *bs, int64_t offset,
int64_t bytes)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = {
@ -1913,7 +1913,7 @@ fail:
return ret;
}
static int nbd_co_flush(BlockDriverState *bs)
static int coroutine_fn nbd_co_flush(BlockDriverState *bs)
{
return nbd_client_co_flush(bs);
}