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charset=us-ascii Content-Disposition: inline Hi Linus, Locking fix for nouveau's use of HMM This small series was posted by Christoph before the merge window, but didn't make it in time for the PR. It fixes various locking errors in the nouveau driver's use of the hmm_range_* functions. The diffstat is a bit big as Christoph did a comprehensive job to move the obsolete API from the core header and into the driver before fixing its flow, but the risk of regression from this code motion is low. I don't intend to often send -rc patches for hmm, but this is entangled with other changes already, so it is simpler to keep it on the hmm git branch. Thanks, Jason The following changes since commit 5f9e832c137075045d15cd6899ab0505cfb2ca4b: Linus 5.3-rc1 (2019-07-21 14:05:38 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git tags/for-linus-hmm for you to fetch changes up to de4ee728465f7c0c29241550e083139b2ce9159c: nouveau: unlock mmap_sem on all errors from nouveau_range_fault (2019-07-25 16:14:40 -0300) ---------------------------------------------------------------- HMM patches for 5.3-rc Fix the locking around nouveau's use of the hmm_range_* APIs. It works correctly in the success case, but many of the the edge cases have missing unlocks or double unlocks. ---------------------------------------------------------------- Christoph Hellwig (4): mm/hmm: always return EBUSY for invalid ranges in hmm_range_{fault,snapshot} mm/hmm: move hmm_vma_range_done and hmm_vma_fault to nouveau nouveau: remove the block parameter to nouveau_range_fault nouveau: unlock mmap_sem on all errors from nouveau_range_fault Documentation/vm/hmm.rst | 2 +- drivers/gpu/drm/nouveau/nouveau_svm.c | 47 ++++++++++++++++++++++++++++-- include/linux/hmm.h | 54 ----------------------------------- mm/hmm.c | 10 +++---- 4 files changed, 49 insertions(+), 64 deletions(-) --pWyiEgJYm5f9v55/ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfB7FMLh+8QxL+6i3OG33FX4gmxoFAl1AMOIACgkQOG33FX4g mxoQ2g//RnLjfumNrH3tMwS8UkYgAoWVh6NGyQ7EjUPT2fvHlfo3dMqzUNK9h+wN k2MKDTSZbFVhJQ5scU9KbhzGBXih4+DLnW1bpN1k/6nfZ6EXxRJakmcEz+LE53Pn ylcuBXU9SLf733j+uwy42BQhkL7/Ykk+vt/aToWEyuTIXsR7zkTPVd7XH4JcHKi6 Lsf+zGtBCsIsh27T7uyyyOI52XwcY8Zm6LvfIKdOLczPRB8SzQ3yyMHjG42L7/ui VGDvoU+4pMGQmBg2anE49/xsxDrGWeVYgkcsQcw2PhlthXw3VwmWBj83chLU9+qt Vc1jofLj4Srgv+mXgFjmu0j1yJ84qoJaBb1YPzxDWoJGHpXyhLWKc7U55lvvotDD EJCOV6nE+VMGo/Zu96O+LI4IW05afPxJstNj3XQg72lF4WaRGOS8q3OhmGqntaNh ajQNYrcUDODmwepiOpDPf28K2cybwdINqrNKFw2e9eybnBxE4VEoF5vjUIlQmYoj BNZAORxOyrnNHr8w3q46pK5OPinjXhNnKXJFrcqldZKKonhRCTIb+vu22CLD0QCC DjmflIaGbHx8Q8yB+9B5pFt3j/a9lMzYgfN61Kh1qCOAiDWDXBjJ/c/mA6++iwgL 08F+Xltp9NoE46VUbpij+5xq6eaXrHWb7v8QyRZJt04KHziebmM= =6E82 -----END PGP SIGNATURE----- --pWyiEgJYm5f9v55/--