Searched hist:"47 f245985a4f3e270b1e4f28aa49f4c939527981" (Results 1 – 2 of 2) sorted by relevance
| /linux/include/linux/ |
| H A D | hmm.h | diff 47f245985a4f3e270b1e4f28aa49f4c939527981 Thu May 23 16:08:28 CEST 2019 Jason Gunthorpe <jgg@mellanox.com> mm/hmm: Hold on to the mmget for the lifetime of the range
Range functions like hmm_range_snapshot() and hmm_range_fault() call
find_vma, which requires hodling the mmget() and the mmap_sem for the mm.
Make this simpler for the callers by holding the mmget() inside the range
for the lifetime of the range. Other functions that accept a range should
only be called if the range is registered.
This has the side effect of directly preventing hmm_release() from
happening while a range is registered. That means range->dead cannot be
false during the lifetime of the range, so remove dead and
hmm_mirror_mm_is_alive() entirely.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Philip Yang <Philip.Yang@amd.com>
|
| /linux/mm/ |
| H A D | hmm.c | diff 47f245985a4f3e270b1e4f28aa49f4c939527981 Thu May 23 16:08:28 CEST 2019 Jason Gunthorpe <jgg@mellanox.com> mm/hmm: Hold on to the mmget for the lifetime of the range
Range functions like hmm_range_snapshot() and hmm_range_fault() call
find_vma, which requires hodling the mmget() and the mmap_sem for the mm.
Make this simpler for the callers by holding the mmget() inside the range
for the lifetime of the range. Other functions that accept a range should
only be called if the range is registered.
This has the side effect of directly preventing hmm_release() from
happening while a range is registered. That means range->dead cannot be
false during the lifetime of the range, so remove dead and
hmm_mirror_mm_is_alive() entirely.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Philip Yang <Philip.Yang@amd.com>
|