Pekka Enberg wrote:
On 8/31/05, Machida, Hiroyuki <[EMAIL PROTECTED]> wrote:+inline +static int hint_index_body(const unsigned char *name, int name_len, int check_null) +{ + int i; + int val = 0; + unsigned char *p = (unsigned char *) name; + int id = current->pid; + + for (i=0; i<name_len; i++) { + if (check_null && !*p) break; + val = ((val << 1) & 0xfe) | ((val & 0x80) ? 1 : 0); + val ^= *p; + p ++; + } + id = ((id >> 8) & 0xf) ^ (id & 0xf); + val = (val << 1) | (id & 1); + return val & (FAT_SCAN_NWAY-1);Couldn't you use jhash() from <linux/jhash.h> here? Pekka
Thanks, I'll replace it with functions in jhash.h, then check performance again. -- Hiroyuki Machida [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
