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Message-ID: <7353.1224682770@jrobl> Date: Wed, 22 Oct 2008 22:39:30 +0900 From: hooanon05@...oo.co.jp To: ttb@...tacle.dhs.org, rml@...ell.com cc: linux-kernel@...r.kernel.org Subject: lock free inotify_ioctl()? Hello John McCutchan and Robert Love, I have a question about inotify_ioctl(). I am investigating if a user process misses the inotify event or gets wrong event by ioctl(fd, FIONREAD, &pending) in linux-2.6.27, and found it doesn't acquire dev->ev_mutex lock before accessing dev->queue_size. In SMP system, is it safe and sure too? Is the mutex lock unnecessary? Junjiro R. Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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