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sched/wait: Fix the signal handling fix
Jan Stancek reported that I wrecked things for him by fixing things for Vladimir :/ His report was due to an UNINTERRUPTIBLE wait getting -EINTR, which should not be possible, however my previous patch made this possible by unconditionally checking signal_pending(). We cannot use current->state as was done previously, because the instruction after the store to that variable it can be changed. We must instead pass the initial state along and use that. Fixes: 6898563 ("sched/wait: Fix signal handling in bit wait helpers") Reported-by: Jan Stancek <[email protected]> Reported-by: Chris Mason <[email protected]> Tested-by: Jan Stancek <[email protected]> Tested-by: Vladimir Murzin <[email protected]> Tested-by: Chris Mason <[email protected]> Reviewed-by: Paul Turner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: [email protected] Cc: Oleg Nesterov <[email protected]> Cc: [email protected] Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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