s_user_ns for an mqueue super block needs to be set to the user
ns which owns the ipc ns, otherwise it will not be mountable in
that user ns. This is not currently the case for an
unshare(CLONE_NEWIPC|CLONE_NEWUSER) as the internal mount of the
super block for the new ipc ns is done before the new user
namespace is installed.
Since s_user_ns = ipc_ns->user_ns is the only arrangement that
makes sense for mqueue, the initial kernel mount can simply pass
that namespace to sget_userns(). In addition we should do the
same for userspace mounts to preserve the behavior that allows
a user privileged towards ipc_ns->user_ns to mount mqueue from a
different user ns. The existing checks already ensure that the
user has sufficient privileges for the mount.
Signed-off-by: Seth Forshee <email address hidden>
Acked-by: Tim Gardner <email address hidden>
Signed-off-by: Kamal Mostafa <email address hidden>
1. Page table bo allocated in vram and linked to man->lru.
tbo->list_kref.refcount=2
2. Page table bo is swapped out and removed from man->lru.
tbo->list_kref.refcount=1
3. Command submission from userspace. Page table bo is moved
to vram. ttm_bo_move_to_lru_tail() link it to man->lru and
don't increase the kref count.
Reviewed-by: Thomas Hellstrom <email address hidden>
Signed-off-by: Flora Cui <email address hidden>
Reviewed-by: Christian König <email address hidden>
Signed-off-by: Alex Deucher <email address hidden>
Signed-off-by: Greg Kroah-Hartman <email address hidden>
Signed-off-by: Alberto Milone <email address hidden>
Acked-by: Tim Gardner <email address hidden>
Signed-off-by: Kamal Mostafa <email address hidden>
The function this used changed in
092c96a8ab9d1bd60ada2ed385cc364ce084180e
drm/radeon: fix dp link rate selection (v2)
However for MST we should just always train to the
max link/rate. Though we probably need to limit this
for future hw, in theory radeon won't support it.
This fixes my 30" monitor with MST enabled.
Signed-off-by: Dave Airlie <email address hidden>
Signed-off-by: Alex Deucher <email address hidden>
Signed-off-by: Greg Kroah-Hartman <email address hidden>
Signed-off-by: Alberto Milone <email address hidden>
Acked-by: Tim Gardner <email address hidden>
Signed-off-by: Kamal Mostafa <email address hidden>
We should validate the port setting that we got from the user and check
if it's what we've set it to (PORT_OTHER), also add explanation that
ignoring advertising is good as long as we don't have autonegotiation.
Signed-off-by: Nikolay Aleksandrov <email address hidden>
Acked-by: Michael S. Tsirkin <email address hidden>
Signed-off-by: David S. Miller <email address hidden>
(cherry picked from commit 0cf3ace9e7cb47e3173561a8fb2601a12d8f75d2)
Signed-off-by: Andy Gospodarek <email address hidden>
Acked-by: Tim Gardner <email address hidden>
Acked-by: Brad Figg <email address hidden>
Signed-off-by: Kamal Mostafa <email address hidden>
