diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-03-16 16:53:07 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-26 20:33:37 +0300 |
| commit | 96268163f9c9443e7f73a202253f68566f93dc79 (patch) | |
| tree | bb4b5213de5449e2e8803393f26d60ec7a577020 /mm/hmm.c | |
| parent | ddfaed17a779ddb728e5534a87596950842d6b04 (diff) | |
| download | linux-96268163f9c9443e7f73a202253f68566f93dc79.tar.xz | |
mm/hmm: remove the unused HMM_FAULT_ALLOW_RETRY flag
The HMM_FAULT_ALLOW_RETRY isn't used anywhere in the tree. Remove it and
the weird -EAGAIN handling where handle_mm_fault() drops the mmap_sem.
Link: https://lore.kernel.org/r/20200316135310.899364-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'mm/hmm.c')
| -rw-r--r-- | mm/hmm.c | 7 |
1 files changed, 0 insertions, 7 deletions
@@ -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 |