From 1654b25737d2a4538964b290a75e251131fbf3c0 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Tue, 19 Jun 2018 10:45:16 -0400
Subject: [PATCH 04/16] libext2fs: don't create filesystems with meta_bg and
 resize_inode

commit 42e77d5db53e3ec09b5dc507169d15de219799e3

ext2fs_initialize() may end up enabling meta_bg feature for filesystem
which have resize_inode. Such combination is invalid to make sure we
disable resize_inode when enabling meta_bg.

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---
 lib/ext2fs/initialize.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/ext2fs/initialize.c b/lib/ext2fs/initialize.c
index 0b8355d8..8f0af1fb 100644
--- a/lib/ext2fs/initialize.c
+++ b/lib/ext2fs/initialize.c
@@ -369,6 +369,13 @@ ipg_retry:
 		retval = EXT2_ET_RES_GDT_BLOCKS;
 		goto cleanup;
 	}
+	/* Enable meta_bg if we'd lose more than 3/4 of a BG to GDT blocks. */
+	if (super->s_reserved_gdt_blocks + fs->desc_blocks >
+	    super->s_blocks_per_group * 3 / 4) {
+		fs->super->s_feature_incompat |= EXT2_FEATURE_INCOMPAT_META_BG;
+		fs->super->s_feature_compat &= ~EXT2_FEATURE_COMPAT_RESIZE_INODE;
+		set_field(s_reserved_gdt_blocks, 0);
+	}
 
 	/*
 	 * Calculate the maximum number of bookkeeping blocks per
@@ -379,11 +386,6 @@ ipg_retry:
 	overhead = (int) (3 + fs->inode_blocks_per_group +
 			  super->s_reserved_gdt_blocks);
 
-	/* Enable meta_bg if we'd lose more than 3/4 of a BG to GDT blocks. */
-	if (super->s_reserved_gdt_blocks + fs->desc_blocks >
-	    super->s_blocks_per_group * 3 / 4)
-		fs->super->s_feature_incompat |= EXT2_FEATURE_INCOMPAT_META_BG;
-
 	if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
 		overhead++;
 	else
-- 
2.20.1