/*
* the key defines the order in the tree, and so it also defines (optimal)
- * block layout. objectid corresonds to the inode number. The flags
+ * block layout. objectid corresponds to the inode number. The flags
* tells us things about the object, and is a kind of stream selector.
* so for a given inode, keys with flags of 1 might refer to the inode
* data, flags of 2 may point to file data in the btree and flags == 3
/*
* starting byte of this partition on the device,
- * to allowr for stripe alignment in the future
+ * to allow for stripe alignment in the future
*/
__le64 start_offset;
sizeof(struct btrfs_header)) / \
sizeof(struct btrfs_key_ptr))
#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
-#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize))
+#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize))
#define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
sizeof(struct btrfs_item) - \
sizeof(struct btrfs_file_extent_item))
__le64 num_devices;
__le32 sectorsize;
__le32 nodesize;
+ /* Unused and must be equal to nodesize */
__le32 leafsize;
__le32 stripesize;
__le32 sys_chunk_array_size;
#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \
sizeof(struct btrfs_item))
+#define BTRFS_MAX_EXTENT_SIZE (128 * 1024 * 1024)
#define BTRFS_EXTENT_FLAG_DATA (1ULL << 0)
#define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1)
/*
* This generation number is used to test if the new fields are valid
- * and up to date while reading the root item. Everytime the root item
+ * and up to date while reading the root item. Every time the root item
* is written out, the "generation" field is copied into this field. If
* anyone ever mounted the fs with an older kernel, we will have
* mismatching generation values here and thus must invalidate the
__le64 version;
__le64 generation;
__le64 flags;
- __le64 scan; /* progress during scanning */
+ __le64 rescan; /* progress during scanning */
} __attribute__ ((__packed__));
struct btrfs_block_group_item {
int ro;
};
-struct btrfs_extent_ops {
- int (*alloc_extent)(struct btrfs_root *root, u64 num_bytes,
- u64 hint_byte, struct btrfs_key *ins, int metadata);
- int (*free_extent)(struct btrfs_root *root, u64 bytenr,
- u64 num_bytes);
-};
-
struct btrfs_device;
struct btrfs_fs_devices;
struct btrfs_fs_info {
u64 super_bytenr;
u64 total_pinned;
- struct btrfs_extent_ops *extent_ops;
struct list_head dirty_cowonly_roots;
struct list_head recow_ebs;
unsigned int quota_enabled:1;
unsigned int suppress_check_block_errors:1;
unsigned int ignore_fsid_mismatch:1;
+ unsigned int ignore_chunk_tree_error:1;
+ unsigned int avoid_meta_chunk_alloc:1;
+ unsigned int avoid_sys_chunk_alloc:1;
int (*free_extent_hook)(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
/* node allocations are done in nodesize units */
u32 nodesize;
- /* leaf allocations are done in leafsize units */
+ /* Unused, equal to nodesize */
u32 leafsize;
- /* leaf allocations are done in leafsize units */
+ /* leaf allocations are done in nodesize units */
u32 stripesize;
int ref_cows;
generation, 64);
BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
flags, 64);
-BTRFS_SETGET_FUNCS(qgroup_status_scan, struct btrfs_qgroup_status_item,
- scan, 64);
+BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
+ rescan, 64);
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_version,
struct btrfs_qgroup_status_item, version, 64);
struct btrfs_qgroup_status_item, generation, 64);
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_flags,
struct btrfs_qgroup_status_item, flags, 64);
-BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_scan,
- struct btrfs_qgroup_status_item, scan, 64);
+BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_rescan,
+ struct btrfs_qgroup_status_item, rescan, 64);
/* btrfs_qgroup_info_item */
BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
return btrfs_item_size(eb, e) - offset;
}
+/* struct btrfs_ioctl_search_header */
+static inline u64 btrfs_search_header_transid(struct btrfs_ioctl_search_header *sh)
+{
+ return get_unaligned_64(&sh->transid);
+}
+
+static inline u64 btrfs_search_header_objectid(struct btrfs_ioctl_search_header *sh)
+{
+ return get_unaligned_64(&sh->objectid);
+}
+
+static inline u64 btrfs_search_header_offset(struct btrfs_ioctl_search_header *sh)
+{
+ return get_unaligned_64(&sh->offset);
+}
+
+static inline u32 btrfs_search_header_type(struct btrfs_ioctl_search_header *sh)
+{
+ return get_unaligned_32(&sh->type);
+}
+
+static inline u32 btrfs_search_header_len(struct btrfs_ioctl_search_header *sh)
+{
+ return get_unaligned_32(&sh->len);
+}
+
/* this returns the number of file bytes represented by the inline item.
* If an item is compressed, this is the uncompressed size
*/
return btrfs_file_extent_ram_bytes(eb, fi);
}
+/*
+ * NOTE: Backward compatibility, do not use.
+ * Replacement: read nodesize directly
+ */
+__attribute__((deprecated))
static inline u32 btrfs_level_size(struct btrfs_root *root, int level) {
if (level == 0)
return root->leafsize;
int type);
int btrfs_previous_extent_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid);
+int btrfs_next_extent_item(struct btrfs_root *root,
+ struct btrfs_path *path, u64 max_objectid);
int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf,
struct extent_buffer *parent, int parent_slot,
projects / platform / upstream / btrfs-progs.git / blobdiff