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authorraz ben yehuda <raziebe@gmail.com>2009-06-16 17:00:57 +1000
committerNeilBrown <neilb@suse.de>2009-06-16 17:00:57 +1000
commit92e59b6ba21845fadd2cce725010a9351740b76e (patch)
tree01ae5dcf151a8e9e3f578acfac976f59638474ee /drivers/md/raid0.c
parent46994191ae8fdf1cbcc1f29282576b269a638c69 (diff)
md: raid0: chunk size check in raid0_run
have raid0 check chunk size in run method instead of in md. This is part of a series moving the checks from common code to the personalities where they belong. hardsect is short and chunksize is an int, so it is safe to use %. Signed-off-by: raziebe@gmail.com Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid0.c')
-rw-r--r--drivers/md/raid0.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 62fde23bf28..39936a217f9 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -234,6 +234,16 @@ static int create_strip_zones(mddev_t *mddev)
mddev->queue->backing_dev_info.congested_fn = raid0_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
+ /*
+ * now since we have the hard sector sizes, we can make sure
+ * chunk size is a multiple of that sector size
+ */
+ if (mddev->chunk_size % queue_logical_block_size(mddev->queue)) {
+ printk(KERN_ERR "%s chunk_size of %d not valid\n",
+ mdname(mddev),
+ mddev->chunk_size);
+ goto abort;
+ }
printk(KERN_INFO "raid0: done.\n");
mddev->private = conf;
return 0;
@@ -289,8 +299,9 @@ static int raid0_run(mddev_t *mddev)
{
int ret;
- if (mddev->chunk_size == 0) {
- printk(KERN_ERR "md/raid0: non-zero chunk size required.\n");
+ if (mddev->chunk_size == 0 ||
+ !is_power_of_2(mddev->chunk_size)) {
+ printk(KERN_ERR "md/raid0: chunk size must be a power of 2.\n");
return -EINVAL;
}
blk_queue_max_sectors(mddev->queue, mddev->chunk_size >> 9);