On 3/9/07, Eric Dumazet <[EMAIL PROTECTED]> wrote:
Cannot we use a flag in 'struct files_struct', set to one when the task is mono-thread (at task creation in fact), and set to 0 when it creates a new thread (or when someone remotely access to this "struct files_struct" in /proc/pid/fd/... )
How does that work? fget_light() has a built-in assumption that as long as you don't share files_struct, it's okay not to take an extra reference as current is only one doing close(2) and revoke(2) changes that. So it's not really about being single-threaded or not. On 3/9/07, Eric Dumazet <[EMAIL PROTECTED]> wrote:
Also, the thing is racy.
Aah, fget_light() indeed has a race window between fcheck_files() and set_f_light(). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
