43592c4637
Since looking up any zone file inode requires looking up first the inode for the directory representing the zone group of the file, ensuring that the zone group inodes are always cached is desired. To do so, take an extra reference on the zone groups directory inodes on mount, thus avoiding the eviction of these inodes from the inode cache until the volume is unmounted. Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>