0746a0bc6e
Gcc doesn't know that "len" is guaranteed to be >=1 by dcache and generates standard while-loop prologue duplicating loop condition. add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-27 (-27) function old new delta name_to_int 104 77 -27 Link: http://lkml.kernel.org/r/20170912195213.GB17730@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
24 lines
361 B
C
24 lines
361 B
C
#include <linux/dcache.h>
|
|
|
|
unsigned name_to_int(const struct qstr *qstr)
|
|
{
|
|
const char *name = qstr->name;
|
|
int len = qstr->len;
|
|
unsigned n = 0;
|
|
|
|
if (len > 1 && *name == '0')
|
|
goto out;
|
|
do {
|
|
unsigned c = *name++ - '0';
|
|
if (c > 9)
|
|
goto out;
|
|
if (n >= (~0U-9)/10)
|
|
goto out;
|
|
n *= 10;
|
|
n += c;
|
|
} while (--len > 0);
|
|
return n;
|
|
out:
|
|
return ~0U;
|
|
}
|