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| author | John Hubbard <jhubbard@nvidia.com> | 2020-06-04 00:56:40 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-04 05:09:42 +0200 |
| commit | f81cd178ecfd0806c1d2859cfe0a162d80c81a69 (patch) | |
| tree | 7abc36f482d48e1add0a8a9a573be4bebd167417 /mm/truncate.c | |
| parent | drm/i915: convert get_user_pages() --> pin_user_pages() (diff) | |
| download | linux-f81cd178ecfd0806c1d2859cfe0a162d80c81a69.tar.xz linux-f81cd178ecfd0806c1d2859cfe0a162d80c81a69.zip | |
mm/gup: might_lock_read(mmap_sem) in get_user_pages_fast()
Instead of scattering these assertions across the drivers, do this
assertion inside the core of get_user_pages_fast*() functions. That also
includes pin_user_pages_fast*() routines.
Add a might_lock_read(mmap_sem) call to internal_get_user_pages_fast().
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
Cc: Michel Lespinasse <walken@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Link: http://lkml.kernel.org/r/20200522010443.1290485-1-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/truncate.c')
0 files changed, 0 insertions, 0 deletions