On 21/12/2018 20:25, Matthew Wilcox wrote:
On Fri, Dec 21, 2018 at 08:14:12PM +0200, Igor Stoppa wrote:+unsigned long __memset_user(void __user *addr, int c, unsigned long size) +{ + long __d0; + unsigned long pattern = 0; + int i; + + for (i = 0; i < 8; i++) + pattern = (pattern << 8) | (0xFF & c);That's inefficient. pattern = (unsigned char)c; pattern |= pattern << 8; pattern |= pattern << 16; pattern |= pattern << 32;
ok, thank you -- igor
