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    Subject[PATCH 5/6] nouveau: return -EBUSY when hmm_range_wait_until_valid fails
    Date
    -EAGAIN has a magic meaning for non-blocking faults, so don't overload
    it. Given that the caller doesn't check for specific error codes this
    change is purely cosmetic.

    Signed-off-by: Christoph Hellwig <hch@lst.de>
    ---
    drivers/gpu/drm/nouveau/nouveau_svm.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
    index 5de2d54b9782..a9c5c58d425b 100644
    --- a/drivers/gpu/drm/nouveau/nouveau_svm.c
    +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
    @@ -501,7 +501,7 @@ nouveau_range_fault(struct hmm_mirror *mirror, struct hmm_range *range)

    if (!hmm_range_wait_until_valid(range, HMM_RANGE_DEFAULT_TIMEOUT)) {
    up_read(&range->vma->vm_mm->mmap_sem);
    - return -EAGAIN;
    + return -EBUSY;
    }

    ret = hmm_range_fault(range, true);
    --
    2.20.1
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