From: Mikulas Patocka <mpatocka@redhat.com>
Date: Fri, 27 Jul 2012 14:08:01 +0000 (+0100)
Subject: dm stripe: remove minimum stripe size
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8f069b41bce79b0c4b6076acd0f3d15df0a232ed;p=deliverable%2Flinux.git

dm stripe: remove minimum stripe size

There is no technical limitation in device mapper that would prevent the
dm-stripe target from using a stripe size smaller than page size.

This patch removes the limit and makes stripe volumes portable across
architectures with different page size.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 9690daa11c83..6a20e9ea0bfb 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -109,8 +109,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 		return -EINVAL;
 	}
 
-	if (kstrtouint(argv[1], 10, &chunk_size) ||
-	    (chunk_size < (PAGE_SIZE >> SECTOR_SHIFT))) {
+	if (kstrtouint(argv[1], 10, &chunk_size) || !chunk_size) {
 		ti->error = "Invalid chunk_size";
 		return -EINVAL;
 	}