17 Oct
2018
17 Oct
'18
4:19 p.m.
On Wed, Oct 17, 2018 at 08:44:01AM -0700, Daniel Colascione wrote:
Even if no one changes these specific flags we still need a lock due to rmw cycles on the field. For example fadvise can set or clear FMODE_RANDOM. It seems to use file->f_lock for synchronization.
Compare-and-exchange will suffice, right?
Only if all users use the compare and exchange, and right now they don't.