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author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2010-04-02 09:11:29 +0900 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-04 12:06:02 -0700 |
commit | d82ef020cf31504c816803b1def94eb5ff173363 (patch) | |
tree | 1aac1f2260b602d28804a809783076d68a06bb33 /security/commoncap.c | |
parent | 5e11611a5d22252f3f9c169a3c9377eac0c32033 (diff) | |
download | talos-obmc-linux-d82ef020cf31504c816803b1def94eb5ff173363.tar.gz talos-obmc-linux-d82ef020cf31504c816803b1def94eb5ff173363.zip |
proc: pagemap: Hold mmap_sem during page walk
In initial design, walk_page_range() was designed just for walking page
table and it didn't require mmap_sem. Now, find_vma() etc.. are used
in walk_page_range() and we need mmap_sem around it.
This patch adds mmap_sem around walk_page_range().
Because /proc/<pid>/pagemap's callback routine use put_user(), we have
to get rid of it to do sane fix.
Changelog: 2010/Apr/2
- fixed start_vaddr and end overflow
Changelog: 2010/Apr/1
- fixed start_vaddr calculation
- removed unnecessary cast.
- removed unnecessary change in smaps.
- use GFP_TEMPORARY instead of GFP_KERNEL
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: San Mehat <san@google.com>
Cc: Brian Swetland <swetland@google.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
[ Fixed kmalloc failure return code as per Matt ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security/commoncap.c')
0 files changed, 0 insertions, 0 deletions