[CRIU] [PATCH 0/3] signalfd: a kernel interface for dumping pending signals

[Andrey Vagin]

This patch set adds ability to choose a signal queue and
to read signals without dequeuing them.

Three new flags are added:
SFD_SHARED_QUEUE     -- reads will be from process-wide shared signal queue
SFD_PER_THREAD_QUEUE -- reads will be from per-thread signal queue
SFD_PEEK	     -- don't dequeue signals

Cc: Serge Hallyn <serge.hallyn at canonical.com>
Cc: Oleg Nesterov <oleg at redhat.com>
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm at xmission.com>
Cc: Al Viro <viro at zeniv.linux.org.uk>
Cc: Pavel Emelyanov <xemul at parallels.com>
CC: Cyrill Gorcunov <gorcunov at openvz.org>
Cc: Michael Kerrisk <mtk.manpages at gmail.com>

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