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Check for op->wait_for conditions

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It's almost identical to just re-submit... so maybe it was pointless
This commit is contained in:
Vitaliy Filippov
2019-11-08 12:08:25 +03:00
parent a5f2d8b85e
commit 90f081f398
3 changed files with 79 additions and 22 deletions
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blockstore_read.cpp
+9
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@@ -96,6 +96,7 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
return 1;
}
unsigned prev_sqe_pos = ringloop->ring->sq.sqe_tail;
unsigned ring_space = io_uring_sq_space_left(ringloop->ring);
uint64_t fulfilled = 0;
if (dirty_found)
{
@@ -108,6 +109,10 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
dirty.state, dirty_it->first.version, dirty.location) < 0)
{
// need to wait. undo added requests, don't dequeue op
if (read_op->wait_for == WAIT_SQE)
{
read_op->wait_detail = 1 + ring_space;
}
ringloop->ring->sq.sqe_tail = prev_sqe_pos;
read_op->read_vec.clear();
return 0;
@@ -121,6 +126,10 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
if (fulfill_read(read_op, 0, block_size, ST_CURRENT, 0, clean_it->second.location) < 0)
{
// need to wait. undo added requests, don't dequeue op
if (read_op->wait_for == WAIT_SQE)
{
read_op->wait_detail = 1 + ring_space;
}
ringloop->ring->sq.sqe_tail = prev_sqe_pos;
read_op->read_vec.clear();
return 0;