9ns: Remove the old mnt cache
authorBarret Rhoden <brho@cs.berkeley.edu>
Fri, 16 Mar 2018 19:59:19 +0000 (15:59 -0400)
committerBarret Rhoden <brho@cs.berkeley.edu>
Mon, 30 Apr 2018 18:33:44 +0000 (14:33 -0400)
commit0105fa9fc30e07978be4b164d3a6441ce63ac32a
tree133c00d32fe3155ad1ac746fcd76e37f6637e213
parent7765ec93663d78b42b8e99380f605f3168a5332d
9ns: Remove the old mnt cache

Plan 9 had a write-through, data only cache.  It would speed up reads,
and it assumed no one else was writing to the server, which is fine.
Since it was write-through, it never needed to sync to the backend.

The tree_file version of #mnt will use the TFS for its caching, so we
don't need the older caching layer - which actually didn't do anything
on Akaros.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>
kern/drivers/dev/mnt.c
kern/include/ns.h
kern/src/ns/Kbuild
kern/src/ns/cache.c [deleted file]