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| author | Konstantin Khlebnikov <khlebnikov@openvz.org> | 2012-07-11 14:02:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-11 16:04:43 -0700 |
| commit | 4229fb1dc6843c49a14bb098719f8a696cdc44f8 (patch) | |
| tree | b4c8bd028870c42487a168842f43a15d09d4a4d0 /mm/mlock.c | |
| parent | a4e08d001f2e50bb8b3c4eebadcf08e5535f02ee (diff) | |
| download | linux-4229fb1dc6843c49a14bb098719f8a696cdc44f8.tar.gz linux-4229fb1dc6843c49a14bb098719f8a696cdc44f8.tar.bz2 linux-4229fb1dc6843c49a14bb098719f8a696cdc44f8.zip | |
c/r: prctl: less paranoid prctl_set_mm_exe_file()
"no other files mapped" requirement from my previous patch (c/r: prctl:
update prctl_set_mm_exe_file() after mm->num_exe_file_vmas removal) is too
paranoid, it forbids operation even if there mapped one shared-anon vma.
Let's check that current mm->exe_file already unmapped, in this case
exe_file symlink already outdated and its changing is reasonable.
Plus, this patch fixes exit code in case operation success.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Reported-by: Cyrill Gorcunov <gorcunov@openvz.org>
Tested-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mlock.c')
0 files changed, 0 insertions, 0 deletions