[PATCH] uml: SIGIO locking comment
Comment the use of a mysterious-looking lock. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -42,6 +42,7 @@ int write_sigio_irq(int fd)
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return(0);
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}
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/* These are called from os-Linux/sigio.c to protect its pollfds arrays. */
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static DEFINE_SPINLOCK(sigio_spinlock);
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void sigio_lock(void)
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