Reports enhanced partition statistics in sysfs.

Signed-off-by: Jerome Marchand
---
check.c | 26 +++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)
diff -urNp -X linux-2.6/Documentation/dontdiff linux-2.6.orig/fs/partitions/check.c linux-2.6/fs/partitions/check.c
--- linux-2.6.orig/fs/partitions/check.c 2007-12-05 13:43:49.000000000 +0100
+++ linux-2.6/fs/partitions/check.c 2007-12-05 13:51:03.000000000 +0100
@@ -254,11 +254,27 @@ static ssize_t part_size_read(struct hd_
{
return sprintf(page, "%llu\n",(unsigned long long)p->nr_sects);
}
-static ssize_t part_stat_read(struct hd_struct * p, char *page)
+static ssize_t part_stats_read(struct hd_struct * p, char *page)
{
- return sprintf(page, "%8u %8llu %8u %8llu\n",
- p->ios[0], (unsigned long long)p->sectors[0],
- p->ios[1], (unsigned long long)p->sectors[1]);
+ preempt_disable();
+ part_round_stats(p);
+ preempt_enable();
+ return sprintf(page,
+ "%8lu %8lu %8llu %8u "
+ "%8lu %8lu %8llu %8u "
+ "%8u %8u %8u"
+ "\n",
+ part_stat_read(p, ios[READ]),
+ part_stat_read(p, merges[READ]),
+ (unsigned long long)part_stat_read(p, sectors[READ]),
+ jiffies_to_msecs(part_stat_read(p, ticks[READ])),
+ part_stat_read(p, ios[WRITE]),
+ part_stat_read(p, merges[WRITE]),
+ (unsigned long long)part_stat_read(p, sectors[WRITE]),
+ jiffies_to_msecs(part_stat_read(p, ticks[WRITE])),
+ p->in_flight,
+ jiffies_to_msecs(part_stat_read(p, io_ticks)),
+ jiffies_to_msecs(part_stat_read(p, time_in_queue)));
}
static struct part_attribute part_attr_uevent = {
.attr = {.name = "uevent", .mode = S_IWUSR },
@@ -278,7 +294,7 @@ static struct part_attribute part_attr_s
};
static struct part_attribute part_attr_stat = {
.attr = {.name = "stat", .mode = S_IRUGO },
- .show = part_stat_read
+ .show = part_stats_read
};

#ifdef CONFIG_FAIL_MAKE_REQUEST

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