commit 2b69c83924396ad1eda36fdd267c9d2f360f5555
author NeilBrown <neilb@suse.de> Tue May 26 09:41:17 2009 +1000
committer NeilBrown <neilb@suse.de> Tue May 26 09:41:17 2009 +1000
tree 14c01b6dd6b596859835b3f0d176bf02129d2c45
parent 62e1e389f87a8839ad83b08c44691d1df8320846

md: improve errno return when setting array_size

Instead of always returns EINVAL if anything goes wrong
when setting the array size, add the option of
  E2BIG
if the size requested is too large.  This makes it easier
for user-space to be sure what went wrong.

Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/md.c

diff --git a/drivers/md/md.c b/drivers/md/md.c
index aa79d55..58e0b02 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3683,7 +3683,7 @@
 		if (strict_blocks_to_sectors(buf, &sectors) < 0)
 			return -EINVAL;
 		if (mddev->pers && mddev->pers->size(mddev, 0, 0) < sectors)
-			return -EINVAL;
+			return -E2BIG;
 
 		mddev->external_size = 1;
 	}