提交 c9b3ad67 编写于 作者: J Jens Axboe 提交者: Linus Torvalds

[PATCH] as-iosched tunable encoding fix

AS is doing internal msec<->jiffies conversions twice, so the sysfs tunables
which represent time are coming out wrong.  The switch from HZ=1000 exposed
this.

Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 ef2a701d
......@@ -1935,23 +1935,15 @@ struct as_fs_entry {
static ssize_t
as_var_show(unsigned int var, char *page)
{
var = (var * 1000) / HZ;
return sprintf(page, "%d\n", var);
}
static ssize_t
as_var_store(unsigned long *var, const char *page, size_t count)
{
unsigned long tmp;
char *p = (char *) page;
tmp = simple_strtoul(p, &p, 10);
if (tmp != 0) {
tmp = (tmp * HZ) / 1000;
if (tmp == 0)
tmp = 1;
}
*var = tmp;
*var = simple_strtoul(p, &p, 10);
return count;
}
......
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