tree 459e3c517dfe66d0058a41106092dbfd957d3abe
parent 339d541a01f70b247f7e6266c1110aa3cef56b9f
author Davidlohr Bueso <dave@stgolabs.net> 1516641697 -0800
committer Tony Luck <tony.luck@intel.com> 1520289825 -0800

ia64/err-inject: Use get_user_pages_fast()

At the point of sysfs callback, the call to gup is
done without mmap_sem (or any lock for that matter).
This is racy. As such, use the get_user_pages_fast()
alternative and safely avoid taking the lock, if possible.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>