Jeff Layton wrote on Thu, Jul 02, 2015: > So p9_idpool_create should take an argument for the "end" value, and > then store that in a new field in p9_idpool. Then they can pass that in > as the "end" parm in idr_alloc. Or, they could give up using the same > function there and use a different one for tags and FIDs. > > In any case...allowing this thing to allocate tag values that can > collide seems fundamentally wrong. Using idr_alloc_cyclic might also > not hurt either, particularly given that these tag values are supposed > to function something like an XID and you probably don't want to be > reusing them too quickly.
Using cache=none here so behavious is likely different with cache, but basically you can't get more than one tag per user thread accessing the 9P mount... And in RDMA there's a credit so I can't get past whatever sq option was given (defaults to 32) -- tbh even with other transports I doubt it's going to get much higher. Still definitely needs fixing, but I think the issue is somewhere else... If Andrey could share the workload he uses I can try with other servers, would be nice if we can rule a qemu bug out completely :) -- Dominique -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
