]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
mm: use READ_ONCE() for non-scalar types
authorJason Low <jason.low2@hp.com>
Wed, 15 Apr 2015 23:14:05 +0000 (16:14 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 15 Apr 2015 23:35:18 +0000 (16:35 -0700)
commit9d8c47e4bb1c20dbceee437f9fa7d76dafee80a2
treece84c2d3b5f1cff2f1dc583f653f6c9d0f121a46
parent6cd576130b7152d8f225bab9d21a3f6f96c84b47
mm: use READ_ONCE() for non-scalar types

Commit 38c5ce936a08 ("mm/gup: Replace ACCESS_ONCE with READ_ONCE")
converted ACCESS_ONCE usage in gup_pmd_range() to READ_ONCE, since
ACCESS_ONCE doesn't work reliably on non-scalar types.

This patch also fixes the other ACCESS_ONCE usages in gup_pte_range()
and __get_user_pages_fast() in mm/gup.c

Signed-off-by: Jason Low <jason.low2@hp.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/gup.c