From: Kirill Tkhai ktkhai@virtuozzo.com
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
--- fs/ext4/ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -918,7 +918,7 @@ group_add_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);