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author | Oleg Nesterov <oleg@redhat.com> | 2014-12-10 15:45:18 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-10 17:41:09 -0800 |
commit | abdba6e9ea6d3903c2b0618db720e17b3c1c705c (patch) | |
tree | e7abd260e00ff1efaabaf63e459a7a64858be887 /kernel/sched | |
parent | b0fafc11115938a3215723f37e8e9cc6a94b05b0 (diff) | |
download | op-kernel-dev-abdba6e9ea6d3903c2b0618db720e17b3c1c705c.zip op-kernel-dev-abdba6e9ea6d3903c2b0618db720e17b3c1c705c.tar.gz |
proc: task_state: ptrace_parent() doesn't need pid_alive() check
p->ptrace != 0 means that release_task(p) was not called, so pid_alive()
buys nothing and we can remove this check. Other callers already use it
directly without additional checks.
Note: with or without this patch ptrace_parent() can return the pointer to
the freed task, this will be explained/fixed later.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Cc: Sterling Alexander <stalexan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Roland McGrath <roland@hack.frob.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched')
0 files changed, 0 insertions, 0 deletions