Re: [PATCH 0/3] UserfaultFD: Extension for non cooperative uffd usage

2015-04-22 Thread Pavel Emelyanov
On 04/21/2015 03:02 PM, Andrea Arcangeli wrote: > Hi Pavel, > > On Wed, Mar 18, 2015 at 10:34:26PM +0300, Pavel Emelyanov wrote: >> Hi, >> >> On the recent LSF Andrea presented his userfault-fd patches and >> I had shown some issues that appear in usage scenarios when the >> monitor task and mm ta

Re: [PATCH 0/3] UserfaultFD: Extension for non cooperative uffd usage

2015-04-21 Thread Andrea Arcangeli
Hi Pavel, On Wed, Mar 18, 2015 at 10:34:26PM +0300, Pavel Emelyanov wrote: > Hi, > > On the recent LSF Andrea presented his userfault-fd patches and > I had shown some issues that appear in usage scenarios when the > monitor task and mm task do not cooperate to each other on VM > changes (and for

[PATCH 0/3] UserfaultFD: Extension for non cooperative uffd usage

2015-03-18 Thread Pavel Emelyanov
Hi, On the recent LSF Andrea presented his userfault-fd patches and I had shown some issues that appear in usage scenarios when the monitor task and mm task do not cooperate to each other on VM changes (and fork()-s). Here's the implementation of the extended uffd API that would help us to addre