Commit dd98acf7 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
Browse files

keyctl_session_to_parent(): use thread_group_empty() to check singlethreadness

No functional changes.

keyctl_session_to_parent() is the only user of signal->count which needs
the correct value.  Change it to use thread_group_empty() instead, this
must be strictly equivalent under tasklist, and imho looks better.
Signed-off-by: default avatarOleg Nesterov <>
Acked-by: default avatarDavid Howells <>
Cc: Peter Zijlstra <>
Acked-by: default avatarRoland McGrath <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 5089a976
......@@ -1269,7 +1269,7 @@ long keyctl_session_to_parent(void)
goto not_permitted;
/* the parent must be single threaded */
if (atomic_read(&parent->signal->count) != 1)
if (!thread_group_empty(parent))
goto not_permitted;
/* the parent and the child must have different session keyrings or
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