| From | David Hildenbrand <> | Subject | [PATCH mm-unstable v1 19/20] habanalabs: remove FOLL_FORCE usage | Date | Wed, 16 Nov 2022 11:26:58 +0100 |
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FOLL_FORCE is really only for ptrace access. As we unpin the pinned pages using unpin_user_pages_dirty_lock(true), the assumption is that all these pages are writable.
FOLL_FORCE in this case seems to be due to copy-and-past from other drivers. Let's just remove it.
Acked-by: Oded Gabbay <ogabbay@kernel.org> Cc: Oded Gabbay <ogabbay@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David Hildenbrand <david@redhat.com> --- drivers/misc/habanalabs/common/memory.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/habanalabs/common/memory.c index ef28f3b37b93..e35cca96bbef 100644 --- a/drivers/misc/habanalabs/common/memory.c +++ b/drivers/misc/habanalabs/common/memory.c @@ -2312,8 +2312,7 @@ static int get_user_memory(struct hl_device *hdev, u64 addr, u64 size, if (!userptr->pages) return -ENOMEM; - rc = pin_user_pages_fast(start, npages, - FOLL_FORCE | FOLL_WRITE | FOLL_LONGTERM, + rc = pin_user_pages_fast(start, npages, FOLL_WRITE | FOLL_LONGTERM, userptr->pages); if (rc != npages) { -- 2.38.1
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