Merge tag 'v5.3-rc3' into drm-next-5.4

[linux.git] / mm / hmm.c

diff --git a/mm/hmm.c b/mm/hmm.c
index e1eedef129cf5c3425cb5d709b42910cb5409e43..16b6731a34db79b46516ac74da8ec5c59a03e99c 100644 (file)
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -946,7 +946,7 @@ EXPORT_SYMBOL(hmm_range_unregister);
  * @range: range
  * Return: -EINVAL if invalid argument, -ENOMEM out of memory, -EPERM invalid
  *          permission (for instance asking for write and range is read only),
- *          -EAGAIN if you need to retry, -EFAULT invalid (ie either no valid
+ *          -EBUSY if you need to retry, -EFAULT invalid (ie either no valid
  *          vma or it is illegal to access that range), number of valid pages
  *          in range->pfns[] (from range start address).
  *
@@ -967,7 +967,7 @@ long hmm_range_snapshot(struct hmm_range *range)
        do {
                /* If range is no longer valid force retry. */
                if (!range->valid)
-                       return -EAGAIN;
+                       return -EBUSY;
 
                vma = find_vma(hmm->mm, start);
                if (vma == NULL || (vma->vm_flags & device_vma))
@@ -1062,10 +1062,8 @@ long hmm_range_fault(struct hmm_range *range, bool block)
 
        do {
                /* If range is no longer valid force retry. */
-               if (!range->valid) {
-                       up_read(&hmm->mm->mmap_sem);
-                       return -EAGAIN;
-               }
+               if (!range->valid)
+                       return -EBUSY;
 
                vma = find_vma(hmm->mm, start);
                if (vma == NULL || (vma->vm_flags & device_vma))