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ocfs2: Return -EINVAL when a device is not ocfs2. 

In case of non-modular kernels the root filesystem is mounted by trying
several filesystems. If ocfs2 was tried before the actual filesystem
type, the mount would fail because ocfs2_sb_probe() returns -EAGAIN
instead of -EINVAL.  ocfs2 will now return -EINVAL properly.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Reported-by: Laszlo Attila Toth <panther@balabit.hu>
This commit is contained in:
Joel Becker 2009-10-28 22:28:24 -07:00
parent 964fe080d9
commit fb5cbe9efd
1 changed files with 9 additions and 7 deletions
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16
fs/ocfs2/super.c
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@ -773,18 +773,20 @@ static int ocfs2_sb_probe(struct super_block *sb,
if (tmpstat < 0) {
status = tmpstat;
mlog_errno(status);
goto bail;
break;
}
di = (struct ocfs2_dinode *) (*bh)->b_data;
memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats));
spin_lock_init(&stats->b_lock);
status = ocfs2_verify_volume(di, *bh, blksize, stats);
if (status >= 0)
goto bail;
brelse(*bh);
*bh = NULL;
if (status != -EAGAIN)
tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats);
if (tmpstat < 0) {
brelse(*bh);
*bh = NULL;
}
if (tmpstat != -EAGAIN) {
status = tmpstat;
break;
}
}
bail: