diff options
| -rw-r--r-- | include/linux/hmm.h | 5 | ||||
| -rw-r--r-- | mm/hmm.c | 7 |
2 files changed, 0 insertions, 12 deletions
diff --git a/include/linux/hmm.h b/include/linux/hmm.h index c102e359b59d..4bf8d6997b12 100644 --- a/include/linux/hmm.h +++ b/include/linux/hmm.h @@ -217,11 +217,6 @@ static inline uint64_t hmm_device_entry_from_pfn(const struct hmm_range *range, range->flags[HMM_PFN_VALID]; } -/* - * Retry fault if non-blocking, drop mmap_sem and return -EAGAIN in that case. - */ -#define HMM_FAULT_ALLOW_RETRY (1 << 0) - /* Don't fault in missing PTEs, just snapshot the current state. */ #define HMM_FAULT_SNAPSHOT (1 << 1) @@ -45,16 +45,10 @@ static int hmm_vma_do_fault(struct mm_walk *walk, unsigned long addr, if (!vma) goto err; - if (hmm_vma_walk->flags & HMM_FAULT_ALLOW_RETRY) - flags |= FAULT_FLAG_ALLOW_RETRY; if (write_fault) flags |= FAULT_FLAG_WRITE; ret = handle_mm_fault(vma, addr, flags); - if (ret & VM_FAULT_RETRY) { - /* Note, handle_mm_fault did up_read(&mm->mmap_sem)) */ - return -EAGAIN; - } if (ret & VM_FAULT_ERROR) goto err; @@ -662,7 +656,6 @@ static const struct mm_walk_ops hmm_walk_ops = { * -ENOMEM: Out of memory. * -EPERM: Invalid permission (e.g., asking for write and range is read * only). - * -EAGAIN: A page fault needs to be retried and mmap_sem was dropped. * -EBUSY: The range has been invalidated and the caller needs to wait for * the invalidation to finish. * -EFAULT: Invalid (i.e., either no valid vma or it is illegal to access |