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    SubjectRe: RFC: Fix f_flags races without the BKL
    On Fri, Jan 02, 2009 at 08:09:03PM +0100, Oleg Nesterov wrote:
    > On 01/02, Al Viro wrote:
    > >
    > > Bloating with mutex is over the top, indeed, but why can't we simply keep
    > > a pointer to fasync_struct in there? Do we ever have a struct file with
    > > several fasync_struct?
    >
    > pipe_rdwr_fasync() ?

    Ho-hum... Right you are ;-/

    FWIW, it's still bloody tempting to try. How about hlist from struct file
    through fasync_struct? Possibly with reference from fasync_struct back
    to the queue it's on, while we are at it - would make fasync_helper simpler...


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