#include "kerncompat.h"
#include "ctree.h"
+#include "sizes.h"
-#define BTRFS_SUPER_INFO_OFFSET (64 * 1024)
+#define BTRFS_SUPER_INFO_OFFSET SZ_64K
#define BTRFS_SUPER_INFO_SIZE 4096
#define BTRFS_SUPER_MIRROR_MAX 3
/* Allow to open a partially created filesystem */
OPEN_CTREE_FS_PARTIAL = (1U << 12),
+
+ /*
+ * Invalidate the free space tree (i.e., clear the FREE_SPACE_TREE_VALID
+ * compat_ro bit).
+ */
+ OPEN_CTREE_INVALIDATE_FST = (1U << 13),
};
/*
SBREAD_PARTIAL = (1 << 1),
};
+/*
+ * Use macro to define mirror super block position,
+ * so we can use it in static array initialization
+ */
+#define BTRFS_SB_MIRROR_OFFSET(mirror) ((u64)(SZ_16K) << \
+ (BTRFS_SUPER_MIRROR_SHIFT * (mirror)))
+
static inline u64 btrfs_sb_offset(int mirror)
{
- u64 start = 16 * 1024;
if (mirror)
- return start << (BTRFS_SUPER_MIRROR_SHIFT * mirror);
+ return BTRFS_SB_MIRROR_OFFSET(mirror);
return BTRFS_SUPER_INFO_OFFSET;
}
void btrfs_free_fs_info(struct btrfs_fs_info *fs_info);
struct btrfs_fs_info *btrfs_new_fs_info(int writable, u64 sb_bytenr);
-int btrfs_check_fs_compatibility(struct btrfs_super_block *sb, int writable);
+int btrfs_check_fs_compatibility(struct btrfs_super_block *sb,
+ unsigned int flags);
int btrfs_setup_all_roots(struct btrfs_fs_info *fs_info, u64 root_tree_bytenr,
unsigned flags);
void btrfs_release_all_roots(struct btrfs_fs_info *fs_info);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid);
int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
-int wait_on_tree_block_writeback(struct btrfs_root *root,
- struct extent_buffer *buf);
-u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len);
+u32 btrfs_csum_data(char *data, u32 seed, size_t len);
void btrfs_csum_final(u32 crc, u8 *result);
int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
int write_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *eb);
-int write_and_map_eb(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *eb);
+int write_and_map_eb(struct btrfs_root *root, struct extent_buffer *eb);
/* raid56.c */
void raid6_gen_syndrome(int disks, size_t bytes, void **ptrs);
+int raid5_gen_result(int nr_devs, size_t stripe_len, int dest, void **data);
#endif