lkml.org 
[lkml]   [2019]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v4 1/1] mm: introduce put_user_page*(), placeholder versions
From
Date


> On Mar 19, 2019, at 10:33 PM, Jerome Glisse <jglisse@redhat.com> wrote:
>
> So i believe best we could do is send a SIGBUS to the process that has
> GUPed a range of a file that is being truncated this would match what
> we do for CPU acces. There is no reason access through GUP should be
> handled any differently.

This should be done lazily, as there's no need to send the SIGBUS unless
the GUPed page is actually accessed post-truncate.

\
 
 \ /
  Last update: 2019-03-20 15:56    [W:0.071 / U:0.340 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site