Hi Jens, all, here's the patch I anticipated in my last email. It addresses (serious) starvation problems caused by request-tag exhaustion, as explained in more detail in the commit message. I started from the solution in the function kyber_limit_depth, but then I had to define more articulate limits, to counter starvation also in cases not covered in kyber_limit_depth. If this solution proves to be effective, I'm willing to port it somehow to the other schedulers. Thanks, Paolo Paolo Valente (1): block, bfq: limit tags for writes and async I/O block/bfq-iosched.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++ block/bfq-iosched.h | 12 +++++++++ 2 files changed, 89 insertions(+) -- 2.15.1
