Commit c5739bba authored by Chris Mason's avatar Chris Mason Committed by David Woodhouse
Browse files

Btrfs: snapshot progress 



Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 0f7d52f4

fs/btrfs/ctree.h

+14 −1
Original line number Diff line number Diff line
@@ -227,7 +227,7 @@ struct btrfs_csum_item { 
} __attribute__ ((__packed__));



struct btrfs_inode_map_item {

	struct btrfs_disk_key key;

	u32 refs;

} __attribute__ ((__packed__));



struct crypto_hash;
@@ -883,6 +883,17 @@ static inline void btrfs_set_file_extent_num_blocks(struct 
	e->num_blocks = cpu_to_le64(val);

}



static inline u32 btrfs_inode_map_refs(struct btrfs_inode_map_item *m)

{

	return le32_to_cpu(m->refs);

}



static inline void btrfs_set_inode_map_refs(struct btrfs_inode_map_item *m,

					    u32 val)

{

	m->refs = cpu_to_le32(val);

}



static inline struct btrfs_root *btrfs_sb(struct super_block *sb)

{

	return sb->s_fs_info;
@@ -925,6 +936,8 @@ static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh) 
	btrfs_item_offset((leaf)->items + (slot))))



/* extent-item.c */

int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,

		       struct btrfs_root *root);

struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,

					    struct btrfs_root *root);

int btrfs_alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root

fs/btrfs/dir-item.c

+4 −2
Original line number Diff line number Diff line
@@ -55,12 +55,14 @@ int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root 
	btrfs_set_dir_flags(dir_item, 0);

	btrfs_set_dir_name_len(dir_item, name_len);

	name_ptr = (char *)(dir_item + 1);



	btrfs_memcpy(root, path->nodes[0]->b_data, name_ptr, name, name_len);

	btrfs_mark_buffer_dirty(path->nodes[0]);



	/* FIXME, use some real flag for selecting the extra index */

	if (root == root->fs_info->tree_root)

		goto out;



	btrfs_memcpy(root, path->nodes[0]->b_data, name_ptr, name, name_len);

	btrfs_mark_buffer_dirty(path->nodes[0]);

	btrfs_release_path(root, path);



	btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);

fs/btrfs/disk-io.c

+0 −4
Original line number Diff line number Diff line
@@ -16,10 +16,6 @@ static int check_tree_block(struct btrfs_root *root, struct buffer_head *buf) 
	if (buf->b_blocknr != btrfs_header_blocknr(&node->header)) {

		BUG();

	}

	if (root->node && btrfs_header_parentid(&node->header) !=

	    btrfs_header_parentid(btrfs_buffer_header(root->node))) {

		BUG();

	}

	return 0;

}

fs/btrfs/extent-tree.c

+6 −0
Original line number Diff line number Diff line
@@ -77,6 +77,12 @@ static int lookup_block_ref(struct btrfs_trans_handle *trans, struct btrfs_root 
	return 0;

}



int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,

		       struct btrfs_root *root)

{

	return inc_block_ref(trans, root, root->node->b_blocknr, 1);

}



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

		  struct buffer_head *buf)

{

fs/btrfs/ioctl.h

0 → 100644
+13 −0
Original line number Diff line number Diff line 
#ifndef __IOCTL_

#define __IOCTL_

#include <linux/ioctl.h>



#define BTRFS_IOCTL_MAGIC 0x94

#define BTRFS_VOL_NAME_MAX 255

struct btrfs_ioctl_vol_args {

	char name[BTRFS_VOL_NAME_MAX + 1];

};



#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \

				   struct btrfs_ioctl_vol_args)

#endif