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This playing with signals to allow only fatal signals appears to predate the introduction of wait_event_killable(), and I'm fairly sure that wait_event_killable is what was meant to happen here. [avagin@openvz.org: use wake_up() instead of wake_up_interruptible] Link: http://lkml.kernel.org/r/20180331022839.21277-1-avagin@openvz.org Link: http://lkml.kernel.org/r/20180319191609.23880-1-willy@infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Ian Kent <raven@themaw.net> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>