forked from Minki/linux
b95df5e3e4
ib_umem_get() uses gup_longterm() and relies on the lock to stabilze the vma_list, so we cannot really get rid of mmap_sem altogether, but now that the counter is atomic, we can get of some complexity that mmap_sem brings with only pinned_vm. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> |
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