Re: [PATCH] tty: hold lock across tty buffer finding and bufferfilling

[Alan Cox]

> Or maybe even removing that interface completely...

We should be able to fix that interface fairly simply. If you have a
completed call then you can mark the buffer not to be freed and only
reap it post flush on the completed call.

Once the BKL remnants are gone we can hold tty->ldisc_mutex over ldisc
receive paths at which point this can be turned into a sane API.

Alan
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