[PATCH 4.18 071/150] mm/gup_benchmark: fix unsigned comparison to zero in __gup_benchmark_ioctl

4.18-stable review patch. If anyone has any objections, please let me know. -- [ Upstream commit 51896864579d5a3349740847083f4db5c6487164 ] get_user_pages_fast() will return negative value if no pages were pinned, then be converted to a unsigned, which is compared to zero,

[PATCH 4.18 071/150] mm/gup_benchmark: fix unsigned comparison to zero in __gup_benchmark_ioctl

4.18-stable review patch. If anyone has any objections, please let me know. -- [ Upstream commit 51896864579d5a3349740847083f4db5c6487164 ] get_user_pages_fast() will return negative value if no pages were pinned, then be converted to a unsigned, which is compared to zero,