lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Btrfs: Add per-root block accounting and sysfs entries

Browse Source 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Josef Bacik
2007-08-29 15:47:34 -04:00
committed by David Woodhouse
parent b888db2bd7
commit 58176a9604
9 changed files with 393 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
fs/btrfs/ctree.h
View File

@@ -22,6 +22,7 @@
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
#include "bit-radix.h"
struct btrfs_trans_handle;
@@ -313,6 +314,8 @@ struct btrfs_fs_info {
struct list_head trans_list;
struct list_head dead_roots;
struct delayed_work trans_work;
struct kobject super_kobj;
struct completion kobj_unregister;
int do_barriers;
int closing;
};
@@ -328,6 +331,8 @@ struct btrfs_root {
struct btrfs_key root_key;
struct btrfs_fs_info *fs_info;
struct inode *inode;
struct kobject root_kobj;
struct completion kobj_unregister;
u64 objectid;
u64 last_trans;
u32 blocksize;
@@ -338,6 +343,7 @@ struct btrfs_root {
struct btrfs_key defrag_progress;
int defrag_running;
int defrag_level;
char *name;
};
/* the lower bits in the key flags defines the item type */
@@ -814,6 +820,28 @@ static inline void btrfs_set_root_flags(struct btrfs_root_item *item, u32 val)
item->flags = cpu_to_le32(val);
}
static inline void btrfs_set_root_blocks_used(struct btrfs_root_item *item,
u64 val)
{
item->blocks_used = cpu_to_le64(val);
}
static inline u64 btrfs_root_blocks_used(struct btrfs_root_item *item)
{
return le64_to_cpu(item->blocks_used);
}
static inline void btrfs_set_root_block_limit(struct btrfs_root_item *item,
u64 val)
{
item->block_limit = cpu_to_le64(val);
}
static inline u64 btrfs_root_block_limit(struct btrfs_root_item *item)
{
return le64_to_cpu(item->block_limit);
}
static inline u64 btrfs_super_blocknr(struct btrfs_super_block *s)
{
return le64_to_cpu(s->blocknr);
@@ -1014,6 +1042,23 @@ static inline void btrfs_memmove(struct btrfs_root *root,
memmove(dst, src, nr);
}
static inline int btrfs_set_root_name(struct btrfs_root *root,
const char *name, int len)
{
/* if we already have a name just free it */
if (root->name)
kfree(root->name);
root->name = kmalloc(len+1, GFP_KERNEL);
if (!root->name)
return -ENOMEM;
memcpy(root->name, name, len);
root->name[len] ='\0';
return 0;
}
/* helper function to cast into the data area of the leaf. */
#define btrfs_item_ptr(leaf, slot, type) \
((type *)(btrfs_leaf_data(leaf) + \
@@ -1191,4 +1236,13 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans,
/* tree-defrag.c */
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int cache_only);
/* sysfs.c */
int btrfs_init_sysfs(void);
void btrfs_exit_sysfs(void);
int btrfs_sysfs_add_super(struct btrfs_fs_info *fs);
int btrfs_sysfs_add_root(struct btrfs_root *root);
void btrfs_sysfs_del_root(struct btrfs_root *root);
void btrfs_sysfs_del_super(struct btrfs_fs_info *root);
#endif