]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm/hugetlb.c: fix virtual address handling in hugetlb fault
authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Tue, 10 Jan 2012 23:07:22 +0000 (15:07 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Jan 2012 00:30:42 +0000 (16:30 -0800)
commit1e16a539ac16e7b3a8c2cee188897d4bdb88e6e8
tree12ee5589d6a04d54fc89c7970b6b8e5012d5e74f
parentef009b25f4f8a77d2b32067d424d5ac757dcdc5b
mm/hugetlb.c: fix virtual address handling in hugetlb fault

handle_mm_fault() passes 'faulted' address to hugetlb_fault().  This
address is not aligned to a hugepage boundary.

Most of the functions for hugetlb pages are aware of that and calculate an
alignment themselves.  However some functions such as
copy_user_huge_page() and clear_huge_page() don't handle alignment by
themselves.

This patch make hugeltb_fault() fix the alignment and pass an aligned
addresss (to address of a faulted hugepage) to functions.

[akpm@linux-foundation.org: use &=]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/hugetlb.c