This patch updates the super field to add the cache_generation member. It also
makes us set it to -1 on mkfs so any new filesystem will get the space cache
stuff turned on. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
char label[BTRFS_LABEL_SIZE];
+ __le64 cache_generation;
+
/* future expansion */
- __le64 reserved[32];
+ __le64 reserved[31];
u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
} __attribute__ ((__packed__));
incompat_flags, 64);
BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
csum_type, 16);
+BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
+ cache_generation, 64);
static inline int btrfs_super_csum_size(struct btrfs_super_block *s)
{
btrfs_set_super_stripesize(&super, stripesize);
btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32);
btrfs_set_super_chunk_root_generation(&super, 1);
+ btrfs_set_super_cache_generation(&super, -1);
if (label)
strncpy(super.label, label, BTRFS_LABEL_SIZE - 1);