| commit | 69c907022a7d9325cdc5c9dd064571e445df9a47 | |
| author | Davidlohr Bueso <dave@stgolabs.net> | |
| Mon, 22 Jan 2018 17:21:37 +0000 (22 09:21 -0800) | ||
| committer | Tony Luck <tony.luck@intel.com> | |
| Mon, 5 Mar 2018 22:43:45 +0000 (5 14:43 -0800) | ||
| tree | 459e3c517dfe66d0058a41106092dbfd957d3abe | treesnapshot (tar.gz zip) |
| parent | 339d541a01f70b247f7e6266c1110aa3cef56b9f | commitdiff |
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>
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>
| arch/ia64/kernel/err_inject.c | diffblobblamehistory |