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fastpath for metadata update

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Removing extra request cycle through IO queue in case of successfull
metadata I/O lock.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski 2021-06-21 20:00:11 +02:00
parent dcc54452cf
commit a70608476d
1 changed files with 15 additions and 13 deletions
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28
src/metadata/metadata_io.c
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@ -310,26 +310,26 @@ void metadata_io_req_finalize(struct metadata_io_request *m_req)
a_req->alloc_req_count);
}
static void metadata_io_req_submit(struct metadata_io_request *m_req)
static bool metadata_io_req_lock(struct metadata_io_request *m_req)
{
struct metadata_io_request_asynch *a_req = m_req->asynch;
int lock;
env_atomic_set(&m_req->finished, 0);
if (a_req->mio_conc) {
lock = ocf_mio_async_lock(a_req->mio_conc, m_req,
metadata_io_page_lock_acquired);
if (!a_req->mio_conc)
return true;
if (lock < 0) {
a_req->error = lock;
metadata_io_req_finalize(m_req);
return;
}
lock = ocf_mio_async_lock(a_req->mio_conc, m_req,
metadata_io_page_lock_acquired);
if (lock < 0) {
a_req->error = lock;
metadata_io_req_finalize(m_req);
return false;
}
if (!a_req->mio_conc || lock == OCF_LOCK_ACQUIRED)
metadata_io_page_lock_acquired(&m_req->req);
return (lock == OCF_LOCK_ACQUIRED);
}
void metadata_io_req_end(struct metadata_io_request *m_req)
@ -391,7 +391,8 @@ static void metadata_io_req_start(struct metadata_io_request *m_req)
return;
}
metadata_io_req_submit(m_req);
if (metadata_io_req_lock(m_req))
metadata_io_restart_req(&m_req->req);
}
void metadata_io_req_complete(struct metadata_io_request *m_req)
@ -403,7 +404,8 @@ void metadata_io_req_complete(struct metadata_io_request *m_req)
return;
}
metadata_io_req_submit(m_req);
if (metadata_io_req_lock(m_req))
ocf_engine_push_req_front(&m_req->req, true);
}
/*