SUNRPC: pipefs per-net operations helper introduced
authorStanislav Kinsbursky <skinsbursky@parallels.com>
Mon, 26 Dec 2011 12:39:39 +0000 (15:39 +0300)
committerTrond Myklebust <Trond.Myklebust@netapp.com>
Tue, 31 Jan 2012 23:20:24 +0000 (18:20 -0500)
commitc21a588f35b1c50304e505fad542b3aab0814266
tree2dda83e8d5f62eb9892c425941265aeeb278e952
parent90c4e82999c517e0cd00d0782c68d186cb18b784
SUNRPC: pipefs per-net operations helper introduced

During per-net pipes creation and destruction we have to make sure, that pipefs
sb exists for the whole creation/destruction cycle. This is done by using
special mutex which controls pipefs sb reference on network namespace context.
Helper consists of two parts: first of them (rpc_get_dentry_net) searches for
dentry with specified name and returns with mutex taken on success. When pipe
creation or destructions is completed, caller should release this mutex by
rpc_put_dentry_net call.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
include/linux/sunrpc/rpc_pipe_fs.h
net/sunrpc/netns.h
net/sunrpc/rpc_pipe.c
net/sunrpc/sunrpc_syms.c