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| author |   Jérôme Glisse <jglisse@redhat.com> | 2019-05-13 17:19:52 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 09:47:48 -0700 |
| commit | 9f454612f602d02204b1f6e86b6bec2bfb368c4b (patch) | |
| tree | 5ffd615b4ed473f76e411e59f6e3e24ca07f4c37 /include | |
| parent | mm/hmm: use reference counting for HMM struct (diff) | |
| download | linux-dev-9f454612f602d02204b1f6e86b6bec2bfb368c4b.tar.xz linux-dev-9f454612f602d02204b1f6e86b6bec2bfb368c4b.zip | |
mm/hmm: do not erase snapshot when a range is invalidated
Users of HMM might be using the snapshot information to do preparatory
step like dma mapping pages to a device before checking for invalidation
through hmm_vma_range_done() so do not erase that information and assume
users will do the right thing.
Link: http://lkml.kernel.org/r/20190403193318.16478-4-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions