signal: make do_sigpending() void
do_sigpending() returned 0 unconditionally so it doesn't make sense to have it return at all. This allows us to simplify a bunch of syscall callers. Link: http://lkml.kernel.org/r/20180602103653.18181-5-christian@brauner.ioSigned-off-by: NChristian Brauner <christian@brauner.io> Acked-by: NAl Viro <viro@zeniv.linux.org.uk> Acked-by: NOleg Nesterov <oleg@redhat.com> Reviewed-by: NAndrew Morton <akpm@linux-foundation.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: James Morris <james.morris@microsoft.com> Cc: Kees Cook <keescook@chromium.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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