linux-ext4 - [PATCH 24/47] resize2fs: don't exit if shrinking sparse

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Message-ID: <20141107215323.883.85339.stgit@birch.djwong.org>
Date:	Fri, 07 Nov 2014 13:53:23 -0800
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	tytso@....edu, darrick.wong@...cle.com
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH 24/47] resize2fs: don't exit if shrinking sparse_super2 fs
 to one bg

If we're shrinking a sparse_super2 filesystem to a single block group,
the superblock will be in block 0.  This is perfectly valid (for block
group 0 with a blocksize > 1024) so don't exit.

Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
 resize/resize2fs.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index 8c5db86..4861719 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -2126,7 +2126,7 @@ static errcode_t reserve_sparse_super2_last_group(ext2_resize_t rfs,
 	if (retval)
 		return retval;

-	if (!sb) {
+	if (last_bg && !sb) {
 		fputs(_("Should never happen!  No sb in last super_sparse bg?\n"),
 		      stderr);
 		exit(1);

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