Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

This is a major rework of the nouveau driver core, to reflect more closely
how the hw is used and to make it easier to implement newer features now
that the GPUs are more clearly understood than when nouveau started.

It also contains a few other bits:
thermal patches
nv41/44 pcie gart fixes
i2c unregistering fixes.

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (191 commits)
  drm/nv98/crypt: fix fuc build with latest envyas
  drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
  drm/nv41/vm: fix and enable use of "real" pciegart
  drm/nv44/vm: fix and enable use of "real" pciegart
  drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
  drm/nouveau: store supported dma mask in vmmgr
  drm/nvc0/ibus: initial implementation of subdev
  drm/nouveau/therm: add support for fan-control modes
  drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
  drm/nouveau/therm: calculate the pwm divisor on nv50+
  drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
  drm/nouveau/therm: move thermal-related functions to the therm subdev
  drm/nouveau/bios: parse the pwm divisor from the perf table
  drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
  drm/nouveau/therm: rework thermal table parsing
  drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
  drm/nouveau: fix pm initialization order
  drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
  drm/nouveau: log channel debug/error messages from client object rather than drm client
  drm/nouveau: have drm debugging macros build on top of core macros
  ...

Conflicts:
	drivers/gpu/drm/nouveau/nouveau_dp.c

3 files changed, 16 insertions, 5 deletions

diff --git a/fs/dcache.c b/fs/dcache.c
index 16521a9f2038..693f95bf1cae 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1134,6 +1134,8 @@ positive:
         return 1;
 
 rename_retry:
+        if (locked)
+                goto again;
         locked = 1;
         write_seqlock(&rename_lock);
         goto again;
@@ -1141,7 +1143,7 @@ rename_retry:
 EXPORT_SYMBOL(have_submounts);
 
 /*
- * Search the dentry child list for the specified parent,
+ * Search the dentry child list of the specified parent,
  * and move any unused dentries to the end of the unused
  * list for prune_dcache(). We descend to the next level
  * whenever the d_subdirs list is non-empty and continue
@@ -1236,6 +1238,8 @@ out:
 rename_retry:
         if (found)
                 return found;
+        if (locked)
+                goto again;
         locked = 1;
         write_seqlock(&rename_lock);
         goto again;
@@ -3035,6 +3039,8 @@ resume:
         return;
 
 rename_retry:
+        if (locked)
+                goto again;
         locked = 1;
         write_seqlock(&rename_lock);
         goto again;
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index fb1a2bedbe97..8d80c990dffd 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -289,7 +289,6 @@ static void nlmsvc_free_block(struct kref *kref)
         dprintk("lockd: freeing block %p...\n", block);
 
         /* Remove block from file's list of blocks */
-        mutex_lock(&file->f_mutex);
         list_del_init(&block->b_flist);
         mutex_unlock(&file->f_mutex);
 
@@ -303,7 +302,7 @@ static void nlmsvc_free_block(struct kref *kref)
 static void nlmsvc_release_block(struct nlm_block *block)
 {
         if (block != NULL)
-                kref_put(&block->b_count, nlmsvc_free_block);
+                kref_put_mutex(&block->b_count, nlmsvc_free_block, &block->b_file->f_mutex);
 }
 
 /*
diff --git a/fs/namespace.c b/fs/namespace.c
index 4d31f73e2561..7bdf7907413f 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1886,8 +1886,14 @@ static int do_add_mount(struct mount *newmnt, struct path *path, int mnt_flags)
                 return err;
 
         err = -EINVAL;
-        if (!(mnt_flags & MNT_SHRINKABLE) && !check_mnt(real_mount(path->mnt)))
-                goto unlock;
+        if (unlikely(!check_mnt(real_mount(path->mnt)))) {
+                /* that's acceptable only for automounts done in private ns */
+                if (!(mnt_flags & MNT_SHRINKABLE))
+                        goto unlock;
+                /* ... and for those we'd better have mountpoint still alive */
+                if (!real_mount(path->mnt)->mnt_ns)
+                        goto unlock;
+        }
 
         /* Refuse the same filesystem on the same mount point */
         err = -EBUSY;