Commit e089f05c authored by Chris Mason's avatar Chris Mason Committed by David Woodhouse
Browse files

Btrfs: transaction handles everywhere 



Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 88fd146c

fs/btrfs/Makefile

+2 −2
Original line number Diff line number Diff line 
CC=gcc

CFLAGS = -g -Wall

CFLAGS = -g -Wall -Werror

headers = radix-tree.h ctree.h disk-io.h kerncompat.h print-tree.h list.h

objects = ctree.o disk-io.o radix-tree.o mkfs.o extent-tree.o print-tree.o \

	  root-tree.o dir-item.o hash.o file-item.o inode-item.o
@@ -14,7 +14,7 @@ check=sparse $(CHECKFLAGS) 
	$(check) $<

	$(CC) $(CFLAGS) -c $<



all: tester debug-tree quick-test dir-test

all: tester debug-tree quick-test dir-test tags



debug-tree: $(objects) debug-tree.o

	gcc $(CFLAGS) -o debug-tree $(objects) debug-tree.o

fs/btrfs/TODO

+2 −0
Original line number Diff line number Diff line
@@ -8,6 +8,8 @@ 
* Add block mapping tree (simple dm layer)

* Add simple tree locking (semaphore per tree)

* Make allocator smarter

* Only pin blocks allocated in this transaction

* Add transaction handles

* Do actual block accounting

* Check compat and incompat flags on the inode

* Port into the kernel

fs/btrfs/ctree.c

+106 −98

File changed.

Preview size limit exceeded, changes collapsed.

fs/btrfs/ctree.h

+39 −24
Original line number Diff line number Diff line
@@ -4,6 +4,8 @@ 
#include "list.h"

#include "kerncompat.h"



struct btrfs_trans_handle;



#define BTRFS_MAGIC "_BtRfS_M"



#define BTRFS_ROOT_TREE_OBJECTID 1
@@ -200,6 +202,7 @@ struct btrfs_root { 
	struct btrfs_root_item root_item;

	struct btrfs_key root_key;

	u32 blocksize;

	struct btrfs_trans_handle *running_transaction;

};



/* the lower bits in the key flags defines the item type */
@@ -656,34 +659,46 @@ static inline u8 *btrfs_leaf_data(struct btrfs_leaf *l) 
	((type *)(btrfs_leaf_data(leaf) + \

	btrfs_item_offset((leaf)->items + (slot))))



struct btrfs_buffer *btrfs_alloc_free_block(struct btrfs_root *root);

int btrfs_inc_ref(struct btrfs_root *root, struct btrfs_buffer *buf);

int btrfs_free_extent(struct btrfs_root *root, u64 blocknr, u64 num_blocks,

		      int pin);

int btrfs_search_slot(struct btrfs_root *root, struct btrfs_key *key,

		struct btrfs_path *p, int ins_len, int cow);

struct btrfs_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,

					    struct btrfs_root *root);

int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,

		  struct btrfs_buffer *buf);

int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root

		      *root, u64 blocknr, u64 num_blocks, int pin);

int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root

		      *root, struct btrfs_key *key, struct btrfs_path *p, int

		      ins_len, int cow);

void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);

void btrfs_init_path(struct btrfs_path *p);

int btrfs_del_item(struct btrfs_root *root, struct btrfs_path *path);

int btrfs_insert_item(struct btrfs_root *root, struct btrfs_key *key,

		void *data, u32 data_size);

int btrfs_insert_empty_item(struct btrfs_root *root, struct btrfs_path *path,

			    struct btrfs_key *cpu_key, u32 data_size);

int btrfs_del_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,

		   struct btrfs_path *path);

int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root

		      *root, struct btrfs_key *key, void *data, u32 data_size);

int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, struct btrfs_root

			    *root, struct btrfs_path *path, struct btrfs_key

			    *cpu_key, u32 data_size);

int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);

int btrfs_leaf_free_space(struct btrfs_root *root, struct btrfs_leaf *leaf);

int btrfs_drop_snapshot(struct btrfs_root *root, struct btrfs_buffer *snap);

int btrfs_finish_extent_commit(struct btrfs_root *root);

int btrfs_del_root(struct btrfs_root *root, struct btrfs_key *key);

int btrfs_insert_root(struct btrfs_root *root, struct btrfs_key *key,

		      struct btrfs_root_item *item);

int btrfs_update_root(struct btrfs_root *root, struct btrfs_key *key,

		      struct btrfs_root_item *item);

int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,

			struct btrfs_root_item *item, struct btrfs_key *key);

int btrfs_insert_dir_item(struct btrfs_root *root, char *name, int name_len,

			  u64 dir, u64 objectid, u8 type);

int btrfs_lookup_dir_item(struct btrfs_root *root, struct btrfs_path *path,

			  u64 dir, char *name, int name_len, int mod);

int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root

			*root, struct btrfs_buffer *snap);

int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, struct

			       btrfs_root *root);

int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,

		   struct btrfs_key *key);

int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root

		      *root, struct btrfs_key *key, struct btrfs_root_item

		      *item);

int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root

		      *root, struct btrfs_key *key, struct btrfs_root_item

		      *item);

int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct

			 btrfs_root_item *item, struct btrfs_key *key);

int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root

			  *root, char *name, int name_len, u64 dir, u64

			  objectid, u8 type);

int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root

			  *root, struct btrfs_path *path, u64 dir, char *name,

			  int name_len, int mod);

int btrfs_match_dir_item_name(struct btrfs_root *root, struct btrfs_path *path,

			      char *name, int name_len);

#endif

fs/btrfs/debug-tree.c

+1 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
#include "ctree.h"

#include "disk-io.h"

#include "print-tree.h"

#include "transaction.h"



int main(int ac, char **av) {

	struct btrfs_super_block super;

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