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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-09-12 13:56:34 +0100 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-12 14:55:03 +0100 |
| commit | 505a8ec7e11ae5236c4a154a1e24ef49a8349600 (patch) | |
| tree | 9d1fac93a7f0a94710763bc2ef19ff4e623ca262 /tools/testing/selftests/cgroup | |
| parent | Merge tag 'for-linus-20190912' of gitolite.kernel.org:pub/scm/linux/kernel/git/brauner/linux (diff) | |
| download | linux-dev-505a8ec7e11ae5236c4a154a1e24ef49a8349600.tar.xz linux-dev-505a8ec7e11ae5236c4a154a1e24ef49a8349600.zip | |
Revert "drm/i915/userptr: Acquire the page lock around set_page_dirty()"
The userptr put_pages can be called from inside try_to_unmap, and so
enters with the page lock held on one of the object's backing pages. We
cannot take the page lock ourselves for fear of recursion.
Reported-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reported-by: Martin Wilck <Martin.Wilck@suse.com>
Reported-by: Leo Kraav <leho@kraav.com>
Fixes: aa56a292ce62 ("drm/i915/userptr: Acquire the page lock around set_page_dirty()")
References: https://bugzilla.kernel.org/show_bug.cgi?id=203317
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/cgroup')
0 files changed, 0 insertions, 0 deletions