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authorEric W. Biederman <ebiederm@xmission.com>2006-10-02 02:17:12 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-02 07:57:13 -0700
commit5feb8f5f8403d8874a04aac443692dfe83bd63d2 (patch)
tree8dc23051350f9a4bd22c3172dc570e96e73f3e50
parentbbf73147e2d46611fbdcbc126f887c614c32350b (diff)
[PATCH] pid: implement pid_nr
As we stop storing pid_t's and move to storing struct pid *. We need a way to get the pid_t from the struct pid to report to user space what we have stored. Having a clean well defined way to do this is especially important as we move to multiple pid spaces as may need to report a different value to the caller depending on which pid space the caller is in. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/linux/pid.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 8cf9b11ed264..dba1b2d677a3 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -94,6 +94,14 @@ extern struct pid *find_ge_pid(int nr);
extern struct pid *alloc_pid(void);
extern void FASTCALL(free_pid(struct pid *pid));
+static inline pid_t pid_nr(struct pid *pid)
+{
+ pid_t nr = 0;
+ if (pid)
+ nr = pid->nr;
+ return nr;
+}
+
#define pid_next(task, type) \
((task)->pids[(type)].node.next)

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