From: Mike Lovell <mlovell@bluehost.com>
Date: Wed, 18 May 2016 18:23:14 +0000 (-0600)
Subject: Change behavior in find_free_devnm when wrapping around.
X-Git-Tag: mdadm-4.0~84
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e466cce45ac2397ea426a765c829c621901664b;p=thirdparty%2Fmdadm.git

Change behavior in find_free_devnm when wrapping around.

Newer kernels don't allow for specifying an array larger than 511. This
makes it so find_free_devnm wraps to 511 instead of 2^20 - 1.

Signed-off-by: Mike Lovell <mlovell@bluehost.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---

diff --git a/mdopen.c b/mdopen.c
index e71d7586..f818fdf3 100644
--- a/mdopen.c
+++ b/mdopen.c
@@ -439,7 +439,7 @@ char *find_free_devnm(int use_partitions)
 	static char devnm[32];
 	int devnum;
 	for (devnum = 127; devnum != 128;
-	     devnum = devnum ? devnum-1 : (1<<20)-1) {
+	     devnum = devnum ? devnum-1 : (1<<9)-1) {
 
 		if (use_partitions)
 			sprintf(devnm, "md_d%d", devnum);