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authorStefan Behrens <sbehrens@giantdisaster.de>2013-06-26 17:17:58 +0200
committerDavid Sterba <dsterba@suse.cz>2013-08-09 14:32:31 +0200
commit1ff26009b310cd26df3667b58b8fed27f7891669 (patch)
tree8119122ff8ed2ad9166a98c9886aba1da784d271
parent5f9c5a23e5ff0c5949480ad24a9818c50f5a8dc6 (diff)
Btrfs-progs: add uuid_tree_gen field to btrfs-show-super
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
-rw-r--r--btrfs-show-super.c2
-rw-r--r--ctree.h5
2 files changed, 6 insertions, 1 deletions
diff --git a/btrfs-show-super.c b/btrfs-show-super.c
index f587f106..c815469a 100644
--- a/btrfs-show-super.c
+++ b/btrfs-show-super.c
@@ -247,6 +247,8 @@ static void dump_superblock(struct btrfs_super_block *sb)
(unsigned long long)btrfs_super_csum_size(sb));
printf("cache_generation\t%llu\n",
(unsigned long long)btrfs_super_cache_generation(sb));
+ printf("uuid_tree_generation\t%llu\n",
+ (unsigned long long)btrfs_super_uuid_tree_generation(sb));
uuid_unparse(sb->dev_item.uuid, buf);
printf("dev_item.uuid\t\t%s\n", buf);
diff --git a/ctree.h b/ctree.h
index a7143d9e..704e9900 100644
--- a/ctree.h
+++ b/ctree.h
@@ -437,9 +437,10 @@ struct btrfs_super_block {
char label[BTRFS_LABEL_SIZE];
__le64 cache_generation;
+ __le64 uuid_tree_generation;
/* future expansion */
- __le64 reserved[31];
+ __le64 reserved[30];
u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS];
} __attribute__ ((__packed__));
@@ -1934,6 +1935,8 @@ 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);
+BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
+ uuid_tree_generation, 64);
static inline int btrfs_super_csum_size(struct btrfs_super_block *s)
{