[lkml]   [2019]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [GIT PULL] dlm updates for 5.3
On Tue, Jul 9, 2019 at 9:57 AM David Teigland <> wrote:
> Apart from a couple trivial fixes, the more notable fix makes the dlm
> continuing waiting for a user space result if a signal interrupts the
> wait event.

What? No.

That's not sensible at all.

If wait_event_interruptible() returns -ERESTARTSYS, it means that we
have a signal pending.

And if we have a signal pending, then you can't go back and call
wait_event_interruptible() in a loop, because the signal will
*continue* to be pending, so now your "wait event" becomes a kernel
busy loop.

If you don't want to react to signals, then you shouldn't use the
"interruptible()" version of wait-event.

I'm not pulling this. Because the code looks completely and utterly wrong to me.

Am I missing something? Feel free to educate me and re-submit.


 \ /
  Last update: 2019-07-11 06:06    [W:0.032 / U:1.632 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site