pid namespaces: round up the API

The set of functions process_session, task_session, process_group and
task_pgrp is confusing, as the names can be mixed with each other when looking
at the code for a long time.

The proposals are to
* equip the functions that return the integer with _nr suffix to
  represent that fact,
* and to make all functions work with task (not process) by making
  the common prefix of the same name.

For monotony the routines signal_session() and set_signal_session() are
replaced with task_session_nr() and set_task_session(), especially since they
are only used with the explicit task->signal dereference.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index cd81f0836671..7f05d6ccdb13 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -226,7 +226,7 @@ static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
 
         *uid = current->uid;
         *gid = current->gid;
-        *pgrp = process_group(current);
+        *pgrp = task_pgrp_nr(current);
 
         *minproto = AUTOFS_MIN_PROTO_VERSION;
         *maxproto = AUTOFS_MAX_PROTO_VERSION;
@@ -323,7 +323,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
         sbi->pipe = NULL;
         sbi->catatonic = 1;
         sbi->exp_timeout = 0;
-        sbi->oz_pgrp = process_group(current);
+        sbi->oz_pgrp = task_pgrp_nr(current);
         sbi->sb = s;
         sbi->version = 0;
         sbi->sub_version = 0;