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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-30 22:54:44 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-30 22:54:44 +0300 |
| commit | 515f12b9eeed35250d793b7c874707c33f7f6e05 (patch) | |
| tree | d01ac06c36327910a5ce0b4a0ee3a145736c072c /Documentation/vm | |
| parent | 2a11c76e5301dddefcb618dac04f74e6314df6bc (diff) | |
| parent | de4ee728465f7c0c29241550e083139b2ce9159c (diff) | |
| download | linux-515f12b9eeed35250d793b7c874707c33f7f6e05.tar.xz | |
Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull HMM fixes from Jason Gunthorpe:
"Fix the locking around nouveau's use of the hmm_range_* APIs. It works
correctly in the success case, but many of the the edge cases have
missing unlocks or double unlocks.
The diffstat is a bit big as Christoph did a comprehensive job to move
the obsolete API from the core header and into the driver before
fixing its flow, but the risk of regression from this code motion is
low"
* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
nouveau: unlock mmap_sem on all errors from nouveau_range_fault
nouveau: remove the block parameter to nouveau_range_fault
mm/hmm: move hmm_vma_range_done and hmm_vma_fault to nouveau
mm/hmm: always return EBUSY for invalid ranges in hmm_range_{fault,snapshot}
Diffstat (limited to 'Documentation/vm')
| -rw-r--r-- | Documentation/vm/hmm.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/vm/hmm.rst b/Documentation/vm/hmm.rst index 7d90964abbb0..710ce1c701bf 100644 --- a/Documentation/vm/hmm.rst +++ b/Documentation/vm/hmm.rst @@ -237,7 +237,7 @@ The usage pattern is:: ret = hmm_range_snapshot(&range); if (ret) { up_read(&mm->mmap_sem); - if (ret == -EAGAIN) { + if (ret == -EBUSY) { /* * No need to check hmm_range_wait_until_valid() return value * on retry we will get proper error with hmm_range_snapshot() |