[PATCH] md: raid0: Remove hash table.

Andre Noll
2009-05-14T10:43:49Z

The raid0 hash table has become unused due to the changes in the
previous patch. This patch removes the hash table allocation and
setup code and kills the hash_table field of struct raid0_private_data.

Signed-off-by: Andre Noll <maan@systemlinux.org>
---
drivers/md/raid0.c | 12 ------------
drivers/md/raid0.h | 1 -
2 files changed, 0 insertions(+), 13 deletions(-)

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 9fd3c3c..6bae90c 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -330,22 +330,14 @@ static int raid0_run (mddev_t *mddev)
nb_zone = s + round;
}
printk(KERN_INFO "raid0 : nb_zone is %d.\n", nb_zone);
-
- printk(KERN_INFO "raid0 : Allocating %zu bytes for hash.\n",
- nb_zone*sizeof(struct strip_zone*));
- conf->hash_table = kmalloc (sizeof (struct strip_zone *)*nb_zone, GFP_KERNEL);
- if (!conf->hash_table)
- goto out_free_conf;
sectors = conf->strip_zone[cur].sectors;

- conf->hash_table[0] = conf->strip_zone + cur;
for (i=1; i< nb_zone; i++) {
while (sectors <= conf->spacing) {
cur++;
sectors += conf->strip_zone[cur].sectors;
}
sectors -= conf->spacing;
- conf->hash_table[i] = conf->strip_zone + cur;
}
if (conf->sector_shift) {
conf->spacing >>= conf->sector_shift;
@@ -388,8 +380,6 @@ static int raid0_stop (mddev_t *mddev)
raid0_conf_t *conf = mddev_to_conf(mddev);

blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
- kfree(conf->hash_table);
- conf->hash_table = NULL;
kfree(conf->strip_zone);
conf->strip_zone = NULL;
kfree(conf);
@@ -502,8 +492,6 @@ static void raid0_status (struct seq_file *seq, mddev_t *mddev)
h = 0;
for (j = 0; j < conf->nr_strip_zones; j++) {
seq_printf(seq, " z%d", j);
- if (conf->hash_table[h] == conf->strip_zone+j)
- seq_printf(seq, "(h%d)", h++);
seq_printf(seq, "=[");
for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
seq_printf(seq, "%s/", bdevname(
diff --git a/drivers/md/raid0.h b/drivers/md/raid0.h
index 824b12e..aac3613 100644
--- a/drivers/md/raid0.h
+++ b/drivers/md/raid0.h
@@ -12,7 +12,6 @@ struct strip_zone

struct raid0_private_data
{
- struct strip_zone **hash_table; /* Table of indexes into strip_zone */
struct strip_zone *strip_zone;
mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
int nr_strip_zones;
--
1.5.4.3