nouveau/svm: fix missing folio unlock + put after make_device_exclusive_range()

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[ Upstream commit b3fefbb30a ]

In case we have to retry the loop, we are missing to unlock+put the
folio. In that case, we will keep failing make_device_exclusive_range()
because we cannot grab the folio lock, and even return from the function
with the folio locked and referenced, effectively never succeeding the
make_device_exclusive_range().

While at it, convert the other unlock+put to use a folio as well.

This was found by code inspection.

Fixes: 8f187163eb ("nouveau/svm: implement atomic SVM access")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Tested-by: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250124181524.3584236-2-david@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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David Hildenbrand 2025-01-24 19:15:23 +01:00 • committed by Greg Kroah-Hartman

parent 179831a606

commit f5d5e8165a

1 changed files with 7 additions and 2 deletions

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drivers/gpu/drm/nouveau/nouveau_svm.c

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