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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-30 12:54:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-30 12:54:44 -0700
commit515f12b9eeed35250d793b7c874707c33f7f6e05 (patch)
treed01ac06c36327910a5ce0b4a0ee3a145736c072c /Documentation/vm
parent2a11c76e5301dddefcb618dac04f74e6314df6bc (diff)
parentde4ee728465f7c0c29241550e083139b2ce9159c (diff)
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.rst2
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()