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authorSukadev Bhattiprolu <sukadev@us.ibm.com>2006-12-08 02:38:01 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:28:52 -0800
commit84d737866e2babdeab0c6b18ea155c6a649663b8 (patch)
treee504da826174c2804d8c680828800aa680090686 /include/linux/pid.h
parent6cc1b22a4acef3816eaa5f8c227d93d749b23195 (diff)
downloadlwn-84d737866e2babdeab0c6b18ea155c6a649663b8.tar.gz
lwn-84d737866e2babdeab0c6b18ea155c6a649663b8.zip
[PATCH] add child reaper to pid_namespace
Add a per pid_namespace child-reaper. This is needed so processes are reaped within the same pid space and do not spill over to the parent pid space. Its also needed so containers preserve existing semantic that pid == 1 would reap orphaned children. This is based on Eric Biederman's patch: http://lkml.org/lkml/2006/2/6/285 Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Herbert Poetzl <herbert@13thfloor.at> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/pid.h')
-rw-r--r--include/linux/pid.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 2c0007d17218..4dec047b1837 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -35,8 +35,9 @@ enum pid_type
*
* Holding a reference to struct pid solves both of these problems.
* It is small so holding a reference does not consume a lot of
- * resources, and since a new struct pid is allocated when the numeric
- * pid value is reused we don't mistakenly refer to new processes.
+ * resources, and since a new struct pid is allocated when the numeric pid
+ * value is reused (when pids wrap around) we don't mistakenly refer to new
+ * processes.
*/
struct pid