[$] The rhashtable documentation I wanted to read

The rhashtable data structure is a generic resizable hash-tableimplementation in the Linux kernel, which LWN first introduced as "relativistichash tables" back in 2014. I thought at the time that it might be fun to makeuse of rhashtables, but didn't, until an opportunity arose through my work onthe Lustre filesystem. Lustre is a cluster filesystem that is currently indrivers/staging while the code is revised to meet upstreamrequirements. One of those requirements is to avoid duplicatingsimilar functionality where possible. As Lustre contains a resizablehash table, it really needs to be converted to use rhashtables instead - atlast I have my opportunity.

Subscribers can read on for a look at the rhashtable API by guest authorNeil Brown.