#ifndef __BTRFS__
#define __BTRFS__
+#include <linux/mm.h>
+#include <linux/highmem.h>
#include <linux/fs.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
struct extent_buffer *sb_buffer;
struct super_block *sb;
struct inode *btree_inode;
+ spinlock_t hash_lock;
struct mutex trans_mutex;
struct mutex fs_mutex;
struct list_head trans_list;
+ struct list_head hashers;
struct list_head dead_roots;
struct delayed_work trans_work;
struct kobject super_kobj;
offsetof(type, member), \
sizeof(((type *)0)->member)))
+#ifndef BTRFS_SETGET_FUNCS
#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
-static inline u##bits btrfs_##name(struct extent_buffer *eb, \
- type *s) \
-{ \
- int err; \
- char *map_token; \
- char *kaddr; \
- int unmap_on_exit = (eb->map_token == NULL); \
- unsigned long map_start; \
- unsigned long map_len; \
- unsigned long offset = (unsigned long)s + \
- offsetof(type, member); \
- if (eb->map_token && offset >= eb->map_start && \
- offset + sizeof(((type *)0)->member) <= eb->map_start + \
- eb->map_len) { \
- kaddr = eb->kaddr; \
- map_start = eb->map_start; \
- err = 0; \
- } else { \
- err = map_extent_buffer(eb, offset, \
- sizeof(((type *)0)->member), \
- &map_token, &kaddr, \
- &map_start, &map_len, KM_USER1); \
- } \
- if (!err) { \
- __le##bits *tmp = (__le##bits *)(kaddr + offset - \
- map_start); \
- u##bits res = le##bits##_to_cpu(*tmp); \
- if (unmap_on_exit) \
- unmap_extent_buffer(eb, map_token, KM_USER1); \
- return res; \
- } else { \
- __le##bits res; \
- read_eb_member(eb, s, type, member, &res); \
- return le##bits##_to_cpu(res); \
- } \
-} \
-static inline void btrfs_set_##name(struct extent_buffer *eb, \
- type *s, u##bits val) \
-{ \
- int err; \
- char *map_token; \
- char *kaddr; \
- unsigned long map_start; \
- unsigned long map_len; \
- int unmap_on_exit = (eb->map_token == NULL); \
- unsigned long offset = (unsigned long)s + \
- offsetof(type, member); \
- if (eb->map_token && offset >= eb->map_start && \
- offset + sizeof(((type *)0)->member) <= eb->map_start + \
- eb->map_len) { \
- kaddr = eb->kaddr; \
- map_start = eb->map_start; \
- err = 0; \
- } else { \
- err = map_extent_buffer(eb, offset, \
- sizeof(((type *)0)->member), \
- &map_token, &kaddr, \
- &map_start, &map_len, KM_USER1); \
- } \
- if (!err) { \
- __le##bits *tmp = (__le##bits *)(kaddr + offset - \
- map_start); \
- *tmp = cpu_to_le##bits(val); \
- if (unmap_on_exit) \
- unmap_extent_buffer(eb, map_token, KM_USER1); \
- } else { \
- val = cpu_to_le##bits(val); \
- write_eb_member(eb, s, type, member, &val); \
- } \
-}
+u##bits btrfs_##name(struct extent_buffer *eb, type *s); \
+void btrfs_set_##name(struct extent_buffer *eb, type *s, u##bits val);
+#endif
#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
static inline u##bits btrfs_##name(struct extent_buffer *eb) \
{ \
- int err; \
- char *map_token; \
- char *kaddr; \
- unsigned long map_start; \
- unsigned long map_len; \
+ char *kaddr = kmap_atomic(eb->first_page, KM_USER0); \
unsigned long offset = offsetof(type, member); \
- int unmap_on_exit = (eb->map_token == NULL); \
- if (eb->map_token && offset >= eb->map_start && \
- offset + sizeof(((type *)0)->member) <= eb->map_start + \
- eb->map_len) { \
- kaddr = eb->kaddr; \
- map_start = eb->map_start; \
- err = 0; \
- } else { \
- err = map_extent_buffer(eb, offset, \
- sizeof(((type *)0)->member), \
- &map_token, &kaddr, \
- &map_start, &map_len, KM_USER1); \
- } \
- if (!err) { \
- __le##bits *tmp = (__le##bits *)(kaddr + offset - \
- map_start); \
- u##bits res = le##bits##_to_cpu(*tmp); \
- if (unmap_on_exit) \
- unmap_extent_buffer(eb, map_token, KM_USER1); \
- return res; \
- } else { \
- __le##bits res; \
- read_eb_member(eb, NULL, type, member, &res); \
- return le##bits##_to_cpu(res); \
- } \
+ u##bits res; \
+ __le##bits *tmp = (__le##bits *)(kaddr + offset); \
+ res = le##bits##_to_cpu(*tmp); \
+ kunmap_atomic(kaddr, KM_USER0); \
+ return res; \
} \
static inline void btrfs_set_##name(struct extent_buffer *eb, \
u##bits val) \
{ \
- int err; \
- char *map_token; \
- char *kaddr; \
- unsigned long map_start; \
- unsigned long map_len; \
+ char *kaddr = kmap_atomic(eb->first_page, KM_USER0); \
unsigned long offset = offsetof(type, member); \
- int unmap_on_exit = (eb->map_token == NULL); \
- if (eb->map_token && offset >= eb->map_start && \
- offset + sizeof(((type *)0)->member) <= eb->map_start + \
- eb->map_len) { \
- kaddr = eb->kaddr; \
- map_start = eb->map_start; \
- err = 0; \
- } else { \
- err = map_extent_buffer(eb, offset, \
- sizeof(((type *)0)->member), \
- &map_token, &kaddr, \
- &map_start, &map_len, KM_USER1); \
- } \
- if (!err) { \
- __le##bits *tmp = (__le##bits *)(kaddr + offset - \
- map_start); \
- *tmp = cpu_to_le##bits(val); \
- if (unmap_on_exit) \
- unmap_extent_buffer(eb, map_token, KM_USER1); \
- } else { \
- val = cpu_to_le##bits(val); \
- write_eb_member(eb, NULL, type, member, &val); \
- } \
+ __le##bits *tmp = (__le##bits *)(kaddr + offset); \
+ *tmp = cpu_to_le##bits(val); \
+ kunmap_atomic(kaddr, KM_USER0); \
}
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
/* struct btrfs_extent_item */
BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
-BTRFS_SETGET_FUNCS(extent_owner, struct btrfs_extent_item, owner, 32);
+BTRFS_SETGET_FUNCS(extent_owner, struct btrfs_extent_item, owner, 64);
BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item,
refs, 32);
BTRFS_SETGET_STACK_FUNCS(stack_extent_owner, struct btrfs_extent_item,
- owner, 32);
+ owner, 64);
/* struct btrfs_node */
BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
}
-static unsigned long btrfs_node_key_ptr_offset(int nr)
+static inline unsigned long btrfs_node_key_ptr_offset(int nr)
{
return offsetof(struct btrfs_node, ptrs) +
sizeof(struct btrfs_key_ptr) * nr;
}
-static void btrfs_node_key(struct extent_buffer *eb,
+static inline void btrfs_node_key(struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr)
{
unsigned long ptr;
ins_len, int cow);
int btrfs_realloc_node(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *parent,
- int cache_only, u64 *last_ret);
+ int start_slot, int cache_only, u64 *last_ret,
+ struct btrfs_key *progress);
void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);
struct btrfs_path *btrfs_alloc_path(void);
void btrfs_free_path(struct btrfs_path *p);
u64 bytenr, int mod);
int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
+ struct inode *inode,
u64 objectid, u64 offset,
char *data, size_t len);
struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
extern struct file_operations btrfs_file_operations;
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
- u64 start, u64 end, u64 *hint_block);
+ u64 start, u64 end, u64 inline_end, u64 *hint_block);
/* tree-defrag.c */
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root, int cache_only);
projects / linux-2.6-block.git / blobdiff