From: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx> Subject: bitops: simplify get_count_order_long() These two cases could be unified into one. Link: https://lkml.kernel.org/r/20200807085837.11697-2-richard.weiyang@xxxxxxxxxxxxxxxxx Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx> Cc: Christian Brauner <christian.brauner@xxxxxxxxxx> Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/bitops.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) --- a/include/linux/bitops.h~bitops-simplify-get_count_order_long +++ a/include/linux/bitops.h @@ -206,10 +206,7 @@ static inline int get_count_order_long(u { if (l == 0UL) return -1; - else if (l & (l - 1UL)) - return (int)fls_long(l); - else - return (int)fls_long(l) - 1; + return (int)fls_long(--l); } /** _
