On Fri, Oct 24, 2014 at 5:24 AM, Al Viro <v...@zeniv.linux.org.uk> wrote: > On Fri, Oct 24, 2014 at 03:20:55AM +0100, Al Viro wrote: >> Why the hell do you hold ->i_mutex across the entire opening of underlying >> directory? All you need is to serialize one assignment; the side that loses >> the race will simply fput() what it opened...
The reason I didn't do your "fix" is that it - adds more lines than it takes, - I wasn't sure at all if the lockless access is actually correct without the ACCESS_ONCE and all the memory barrier magic that might be necessary on weird architectures. The rest of the changes look OK. Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
