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Peter Zijlstra
dfd01f0260
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: 68985633bc ("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]>