On Thu, Nov 15, 2018 at 09:09:54PM -0500, Radu Rendec wrote: > kernfs_notify() does two notifications: poll and fsnotify. Originally, > both notifications were done from scheduled work context and all that > kernfs_notify() did was schedule the work. > > This patch simply moves the poll notification from the scheduled work > handler to kernfs_notify(). The fsnotify notification still needs to be > done from scheduled work context because it can sleep (it needs to lock > a mutex). > > If the poll notification is time critical (the notified thread needs to > wake as quickly as possible), it's better to do it from kernfs_notify() > directly. One example is calling sysfs_notify_dirent() from a hardware > interrupt handler to wake up a thread and handle the interrupt in user > space. > > Signed-off-by: Radu Rendec <[email protected]>
Acked-by: Tejun Heo <[email protected]> Greg, can you please route this one? Thanks. -- tejun
