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authorYan, Zheng <zheng.yan@oracle.com>2010-05-16 18:48:46 +0400
committerChris Mason <chris.mason@oracle.com>2010-05-25 18:34:50 +0400
commita22285a6a32390195235171b89d157ed1a1fe932 (patch)
tree3fabc88a029e1af4f2fdcc708e7b62ef3cf3703a /fs/btrfs/transaction.h
parentf0486c68e4bd9a06a5904d3eeb3a0d73a83befb8 (diff)
downloadlinux-a22285a6a32390195235171b89d157ed1a1fe932.tar.xz
Btrfs: Integrate metadata reservation with start_transaction
Besides simplify the code, this change makes sure all metadata reservation for normal metadata operations are released after committing transaction. Changes since V1: Add code that check if unlink and rmdir will free space. Add ENOSPC handling for clone ioctl. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.h')
-rw-r--r--fs/btrfs/transaction.h13
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index 56e728d70e39..14b3841b75d5 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -57,8 +57,11 @@ struct btrfs_trans_handle {
struct btrfs_pending_snapshot {
struct dentry *dentry;
struct btrfs_root *root;
- char *name;
- struct btrfs_key root_key;
+ struct btrfs_root *snap;
+ /* block reservation for the operation */
+ struct btrfs_block_rsv block_rsv;
+ /* extra metadata reseration for relocation */
+ int error;
struct list_head list;
};
@@ -85,11 +88,11 @@ static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
int btrfs_end_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
- int num_blocks);
+ int num_items);
struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
- int num_blocks);
+ int num_blocks);
struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
- int num_blocks);
+ int num_blocks);
int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,