Re: [GIT PULL] 9p update for 5.7

[Dominique Martinet]

Matthew Wilcox wrote on Mon, Apr 06, 2020:
> POSIX may well "allow" short reads, but userspace programmers basically
> never check the return value from read().  Short reads aren't actually
> allowed.  That's why signals are only allowed to interrupt syscalls if
> they're fatal (and the application will never see the returned value
> because it's already dead).

I've seen tons of programs not check read return value yes but these
also have no idea what O_NONBLOCK is so I'm not sure how realistic a
use-case that is?

The alternative I see would be making pipes go through the server as I
said, but that would probably mean another mount option for this; pipes
work as local pipes like they do in nfs currently.

-- 
Dominique