From: Lukas Czerner <lczerner@redhat.com>
Date: Thu, 11 Apr 2013 14:54:46 +0000 (-0400)
Subject: ext4: do not convert to indirect with bigalloc enabled
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=43e50f50866513144026f2ac1a1c5cc20c7a8428;p=linux-beck.git

ext4: do not convert to indirect with bigalloc enabled

With bigalloc feature enabled we do not support indirect addressing at all
so we have to prevent extent addressing to indirect addressing
conversion in this case. The problem has been introduced with the commit
"ext4: support simple conversion of extent-mapped inodes to use i_blocks"

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index d129a4dc16a7..49e8bdff9163 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -625,6 +625,10 @@ int ext4_ind_migrate(struct inode *inode)
 	    (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
 		return -EINVAL;
 
+	if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
+				       EXT4_FEATURE_RO_COMPAT_BIGALLOC))
+		return -EOPNOTSUPP;
+
 	handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
 	if (IS_ERR(handle))
 		return PTR_ERR(handle);