[PATCH 0/2] io-wq: cleanup io_wq and io_wqe

[Gabriel Krisman Bertazi <krisman@suse.de>]

Hi Jens,

This tides up the io-wq internal interface by dropping the io_wqe/io_wq
separation, which no longer makes sense since commit
0654b05e7e65 ("io_uring: One wqe per wq").  We currently have a single
io_wqe instance per io_wq, which is embedded in the structure.  This
patchset merges the two, dropping bit of code to go from one to the
other in the io-wq implementation.

I don't expect it to have any positive impact on performance, of course,
since hopefully the compiler optimizes it, but still, it is nice clean
up.  To be sure, I measured with some mmtests microbenchmarks and I haven't
seen differences with or without the patchset.

Patch 2 is slightly big to review but the use of wq and wqe is
intrinsically connected; it was a bit hard to break it in more pieces.

Tested by running liburing's testsuite and mmtests performance
microbenchmarks (which uses fio).

Based on your for-next branch.

Thanks,

Gabriel Krisman Bertazi (2):
  io-wq: Move wq accounting to io_wq
  io-wq: Drop struct io_wqe

 io_uring/io-wq.c | 408 ++++++++++++++++++++++-------------------------
 1 file changed, 189 insertions(+), 219 deletions(-)

-- 
2.35.3