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drm/i915: drop unneeded make_unshrinkable in free_object

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The comment here is no longer accurate, since the current shrinker code
requires a full ref before touching any objects. Also unset_pages()
should already do the required make_unshrinkable() for us, if needed,
which is also nicely balanced with set_pages().

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211018091055.1998191-4-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2021-10-18 10:10:51 +01:00
parent 5926ff80c9
commit 893f11f0c7
1 changed files with 0 additions and 9 deletions
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9
drivers/gpu/drm/i915/gem/i915_gem_object.c
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@ -363,15 +363,6 @@ static void i915_gem_free_object(struct drm_gem_object *gem_obj)
*/
atomic_inc(&i915->mm.free_count);
/*
* This serializes freeing with the shrinker. Since the free
* is delayed, first by RCU then by the workqueue, we want the
* shrinker to be able to free pages of unreferenced objects,
* or else we may oom whilst there are plenty of deferred
* freed objects.
*/
i915_gem_object_make_unshrinkable(obj);
/*
* Since we require blocking on struct_mutex to unbind the freed
* object from the GPU before releasing resources back to the