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authorHugh Dickins <hughd@google.com>2021-07-07 13:13:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-11 15:05:15 -0700
commit6c855fce2e62e5e9b796b23fe15be1d8b2c8bee2 (patch)
treee11059a1e02e73a6c78e5004596e08f66668340d /lib/usercopy.c
parent023e1a8dd502405ba378a7fbb1ce62beb0616708 (diff)
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mm/rmap: try_to_migrate() skip zone_device !device_private
I know nothing about zone_device pages and !device_private pages; but if try_to_migrate_one() will do nothing for them, then it's better that try_to_migrate() filter them first, than trawl through all their vmas. Signed-off-by: Hugh Dickins <hughd@google.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Reviewed-by: Alistair Popple <apopple@nvidia.com> Link: https://lore.kernel.org/lkml/1241d356-8ec9-f47b-a5ec-9b2bf66d242@google.com/ Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Yang Shi <shy828301@gmail.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/usercopy.c')
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