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authorChris Mason <chris.mason@oracle.com>2007-09-11 11:15:39 -0400
committerDavid Woodhouse <dwmw2@hera.kernel.org>2007-09-11 11:15:39 -0400
commit5ce14bbcdd1b5d9233d26a1e89faf3a26c820c58 (patch)
tree6e2a2964e9b01c03dd1b4d58c976d76664747b64 /fs/btrfs/transaction.h
parent0e2752a72cb37075b24899f01e9bc6a589de3b6c (diff)
Btrfs: Find and remove dead roots the first time a root is loaded.
Dead roots are trees left over after a crash, and they were either in the process of being removed or were waiting to be removed when the box crashed. Before, a search of the entire tree of root pointers was done on mount looking for dead roots. Now, the search is done the first time we load a root. This makes mount faster when there are a large number of snapshots, and it enables the block accounting code to properly update the block counts on the latest root as old versions of the root are reaped after a crash. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.h')
-rw-r--r--fs/btrfs/transaction.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index e451783a1a4..4bc328cbb24 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -78,7 +78,8 @@ void btrfs_transaction_flush_work(struct btrfs_root *root);
void btrfs_transaction_queue_work(struct btrfs_root *root, int delay);
void btrfs_init_transaction_sys(void);
void btrfs_exit_transaction_sys(void);
-int btrfs_add_dead_root(struct btrfs_root *root, struct list_head *dead_list);
+int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest,
+ struct list_head *dead_list);
int btrfs_defrag_dirty_roots(struct btrfs_fs_info *info);
int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
int btrfs_clean_old_snapshots(struct btrfs_root *root);