| commit | a585042f7b933539a0b6bc63650c2d49ffb2e55d | [log] [tgz] |
|---|---|---|
| author | Tejun Heo <tj@kernel.org> | Mon Nov 21 12:32:23 2011 -0800 |
| committer | Tejun Heo <tj@kernel.org> | Mon Nov 21 12:32:23 2011 -0800 |
| tree | bb93d05050e04c4bcd53fdf535239e6312fb62e2 | |
| parent | a5be2d0d1a8746e7be5210e3d6b904455000443c [diff] |
freezer: remove racy clear_freeze_flag() and set PF_NOFREEZE on dead tasks clear_freeze_flag() in exit_mm() is racy. Freezing can start afterwards. Remove it. Skipping freezer for exiting task will be properly implemented later. Also, freezable() was testing exit_state directly to make system freezer ignore dead tasks. Let the exiting task set PF_NOFREEZE after entering TASK_DEAD instead. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com>