From: Kirill Tkhai <ktkhai@virtuozzo.com>
Date: Thu, 25 Apr 2019 17:06:18 +0000 (-0400)
Subject: ext4: actually request zeroing of inode table after grow
X-Git-Tag: v4.19.45~33
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f795247578aaf398d2af4de902264d194c12222f;p=platform%2Fkernel%2Flinux-rpi.git

ext4: actually request zeroing of inode table after grow

commit 310a997fd74de778b9a4848a64be9cda9f18764a upstream.

It is never possible, that number of block groups decreases,
since only online grow is supported.

But after a growing occured, we have to zero inode tables
for just created new block groups.

Fixes: 19c5246d2516 ("ext4: add new online resize interface")
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 5f24fdc..53d57cd 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -977,7 +977,7 @@ mext_out:
 		if (err == 0)
 			err = err2;
 		mnt_drop_write_file(filp);
-		if (!err && (o_group > EXT4_SB(sb)->s_groups_count) &&
+		if (!err && (o_group < EXT4_SB(sb)->s_groups_count) &&
 		    ext4_has_group_desc_csum(sb) &&
 		    test_opt(sb, INIT_INODE_TABLE))
 			err = ext4_register_li_request(sb, o_group);