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[v4,4/5] Btrfs-progs: add uuid_tree_gen field to btrfs-show-super

Message ID 4c91a2534fe03dfc49921ea01cda3efb52fc25da.1372252739.git.sbehrens@giantdisaster.de (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Stefan Behrens June 26, 2013, 3:17 p.m. UTC 
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
---
 btrfs-show-super.c | 2 ++
 ctree.h            | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/btrfs-show-super.c b/btrfs-show-super.c
index f587f10..c815469 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 e4bca8f..1ae8715 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__));
@@ -1933,6 +1934,8 @@  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)
 {