#include <linux/sizes.h>
#include <linux/dynamic_debug.h>
#include <linux/refcount.h>
+#include <linux/crc32c.h>
#include "extent_io.h"
#include "extent_map.h"
#include "async-thread.h"
#define BTRFS_MAX_LEVEL 8
+#define BTRFS_OLDEST_GENERATION 0ULL
+
#define BTRFS_COMPAT_EXTENT_TREE_V0
/*
*/
#define BTRFS_LINK_MAX 65535U
+/* four bytes for CRC32 */
static const int btrfs_csum_sizes[] = { 4 };
-/* four bytes for CRC32 */
#define BTRFS_EMPTY_DIR_SIZE 0
/* ioprio of readahead is set to idle */
#define BTRFS_MAX_EXTENT_SIZE SZ_128M
+
/*
* Count how many BTRFS_MAX_EXTENT_SIZE cover the @size
*/
/* For raid type sysfs entries */
struct raid_kobject {
- int raid_type;
+ u64 flags;
struct kobject kobj;
+ struct list_head list;
};
struct btrfs_space_info {
#define BTRFS_FS_LOG_RECOVERING 4
#define BTRFS_FS_OPEN 5
#define BTRFS_FS_QUOTA_ENABLED 6
-#define BTRFS_FS_QUOTA_ENABLING 7
#define BTRFS_FS_UPDATE_UUID_TREE_GEN 9
#define BTRFS_FS_CREATING_FREE_SPACE_TREE 10
#define BTRFS_FS_BTREE_ERR 11
unsigned long pending_changes;
unsigned long compress_type:4;
unsigned int compress_level;
- int commit_interval;
+ u32 commit_interval;
/*
* It is a suggestive number, the read side is safe even it gets a
* wrong number because we will write out the data into a regular
struct rb_root tree_mod_log;
atomic_t async_delalloc_pages;
- atomic_t open_ioctl_trans;
/*
* this is used to protect the following list -- ordered_roots.
struct btrfs_workqueue *extent_workers;
struct task_struct *transaction_kthread;
struct task_struct *cleaner_kthread;
- int thread_pool_size;
+ u32 thread_pool_size;
struct kobject *space_info_kobj;
+ struct list_head pending_raid_kobjs;
+ spinlock_t pending_raid_kobjs_lock; /* uncontended */
u64 total_pinned;
struct btrfs_fs_devices *fs_devices;
/*
- * the space_info list is almost entirely read only. It only changes
- * when we add a new raid type to the FS, and that happens
- * very rarely. RCU is used to protect it.
+ * The space_info list is effectively read only after initial
+ * setup. It is populated at mount time and cleaned up after
+ * all block groups are removed. RCU is used to protect it.
*/
struct list_head space_info;
struct btrfs_balance_control *balance_ctl;
wait_queue_head_t balance_wait_q;
- unsigned data_chunk_allocations;
- unsigned metadata_ratio;
+ u32 data_chunk_allocations;
+ u32 metadata_ratio;
void *bdev_holder;
};
struct btrfs_file_private {
- struct btrfs_trans_handle *trans;
void *filldir_buf;
};
((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \
btrfs_item_offset_nr(leaf, slot)))
+static inline u64 btrfs_name_hash(const char *name, int len)
+{
+ return crc32c((u32)~1, name, len);
+}
+
+/*
+ * Figure the key offset of an extended inode ref
+ */
+static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
+ int len)
+{
+ return (u64) crc32c(parent_objectid, name, len);
+}
+
static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
{
return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) &&
void btrfs_wait_nocow_writers(struct btrfs_block_group_cache *bg);
void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
- struct btrfs_fs_info *fs_info, unsigned long count);
+ unsigned long count);
int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info,
unsigned long count, u64 transid, int wait);
int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len);
u64 bytenr);
void btrfs_get_block_group(struct btrfs_block_group_cache *cache);
void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
-int get_block_group_index(struct btrfs_block_group_cache *cache);
struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 parent, u64 root_objectid,
int btrfs_free_and_pin_reserved_extent(struct btrfs_fs_info *fs_info,
u64 start, u64 len);
void btrfs_prepare_extent_commit(struct btrfs_fs_info *fs_info);
-int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
- struct btrfs_fs_info *fs_info);
+int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans);
int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u64 num_bytes, u64 parent,
u64 root_objectid, u64 owner, u64 offset);
-int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans,
- struct btrfs_fs_info *fs_info);
+int btrfs_start_dirty_block_groups(struct btrfs_trans_handle *trans);
int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int btrfs_setup_space_cache(struct btrfs_trans_handle *trans,
int btrfs_make_block_group(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytes_used,
u64 type, u64 chunk_offset, u64 size);
+void btrfs_add_raid_kobjects(struct btrfs_fs_info *fs_info);
struct btrfs_trans_handle *btrfs_start_trans_remove_block_group(
struct btrfs_fs_info *fs_info,
const u64 chunk_offset);
void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info);
void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache);
void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *cache);
-void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans,
- struct btrfs_fs_info *fs_info);
+void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans);
u64 btrfs_data_alloc_profile(struct btrfs_fs_info *fs_info);
u64 btrfs_metadata_alloc_profile(struct btrfs_fs_info *fs_info);
u64 btrfs_system_alloc_profile(struct btrfs_fs_info *fs_info);
struct extent_changeset *reserved, u64 start, u64 len);
void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start,
u64 len);
-void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans,
- struct btrfs_fs_info *fs_info);
void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans);
int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode);
int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
-int __get_raid_index(u64 flags);
int btrfs_start_write_no_snapshotting(struct btrfs_root *root);
void btrfs_end_write_no_snapshotting(struct btrfs_root *root);
void btrfs_wait_for_snapshot_creation(struct btrfs_root *root);
void btrfs_destroy_inode(struct inode *inode);
int btrfs_drop_inode(struct inode *inode);
int __init btrfs_init_cachep(void);
-void btrfs_destroy_cachep(void);
-long btrfs_ioctl_trans_end(struct file *file);
+void __cold btrfs_destroy_cachep(void);
struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
struct btrfs_root *root, int *was_new);
struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
/* file.c */
int __init btrfs_auto_defrag_init(void);
-void btrfs_auto_defrag_exit(void);
+void __cold btrfs_auto_defrag_exit(void);
int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode);
int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info);
/* sysfs.c */
int __init btrfs_init_sysfs(void);
-void btrfs_exit_sysfs(void);
+void __cold btrfs_exit_sysfs(void);
int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info);
void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info);
-/* xattr.c */
-ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
-
/* super.c */
int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
unsigned long new_flags);
int btrfs_sync_fs(struct super_block *sb, int wait);
-static inline __printf(2, 3)
+static inline __printf(2, 3) __cold
void btrfs_no_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...)
{
}
#ifdef CONFIG_PRINTK
__printf(2, 3)
+__cold
void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
#else
#define btrfs_printk(fs_info, fmt, args...) \
git.samba.org / sfrench / cifs-2.6.git / blobdiff