lkml.org 
[lkml]   [2021]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [PATCH v2 0/2] kdump: simplify code
Date
From: Tiezhu Yang
> Sent: 11 December 2021 03:33
>
> v2:
> -- add copy_to_user_or_kernel() in lib/usercopy.c
> -- define userbuf as bool type

Instead of having a flag to indicate whether the buffer is user or kernel,
would it be better to have two separate buffer pointers.
One for a user space buffer, the other for a kernel space buffer.
Exactly one of the buffers should always be NULL.

That way the flag is never incorrectly set.

David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)

\
 
 \ /
  Last update: 2021-12-11 18:54    [W:0.093 / U:0.240 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site