diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2010-05-26 14:43:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 09:12:47 -0700 |
| commit | dd98acf74762764fbc4382a1d9a244f11a2658cc (patch) | |
| tree | e194cc516ccc8812a0424dfd2ca1c32bf1052cd4 /security/keys/keyctl.c | |
| parent | 5089a9768041206c76fac299ccd82a528c24c254 (diff) | |
| download | lwn-dd98acf74762764fbc4382a1d9a244f11a2658cc.tar.gz lwn-dd98acf74762764fbc4382a1d9a244f11a2658cc.zip | |
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: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/keys/keyctl.c')
| -rw-r--r-- | security/keys/keyctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c index 8f4dce1987c4..13074b454743 100644 --- a/security/keys/keyctl.c +++ b/security/keys/keyctl.c @@ -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 |