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Diffstat (limited to 'fs/btrfs/ctree.h')
-rw-r--r--fs/btrfs/ctree.h163
1 files changed, 62 insertions, 101 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 7553e9dc5f93..b4a9b1c58d22 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -143,6 +143,8 @@ enum {
BTRFS_FS_STATE_DEV_REPLACING,
/* The btrfs_fs_info created for self-tests */
BTRFS_FS_STATE_DUMMY_FS_INFO,
+
+ BTRFS_FS_STATE_NO_CSUMS,
};
#define BTRFS_BACKREF_REV_MAX 256
@@ -511,11 +513,6 @@ struct btrfs_discard_ctl {
atomic64_t discard_bytes_saved;
};
-enum btrfs_orphan_cleanup_state {
- ORPHAN_CLEANUP_STARTED = 1,
- ORPHAN_CLEANUP_DONE = 2,
-};
-
void btrfs_init_async_reclaim_work(struct btrfs_fs_info *fs_info);
/* fs_info */
@@ -553,7 +550,6 @@ struct btrfs_swapfile_pin {
bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr);
enum {
- BTRFS_FS_BARRIER,
BTRFS_FS_CLOSING_START,
BTRFS_FS_CLOSING_DONE,
BTRFS_FS_LOG_RECOVERING,
@@ -576,7 +572,6 @@ enum {
/*
* Indicate that relocation of a chunk has started, it's set per chunk
* and is toggled between chunks.
- * Set, tested and cleared while holding fs_info::send_reloc_lock.
*/
BTRFS_FS_RELOC_RUNNING,
@@ -601,6 +596,9 @@ enum {
/* Indicate whether there are any tree modification log users */
BTRFS_FS_TREE_MOD_LOG_USERS,
+ /* Indicate that we want the transaction kthread to commit right now. */
+ BTRFS_FS_COMMIT_TRANS,
+
#if BITS_PER_LONG == 32
/* Indicate if we have error/warn message printed on 32bit systems */
BTRFS_FS_32BIT_ERROR,
@@ -613,6 +611,7 @@ enum {
*/
enum btrfs_exclusive_operation {
BTRFS_EXCLOP_NONE,
+ BTRFS_EXCLOP_BALANCE_PAUSED,
BTRFS_EXCLOP_BALANCE,
BTRFS_EXCLOP_DEV_ADD,
BTRFS_EXCLOP_DEV_REMOVE,
@@ -624,20 +623,21 @@ enum btrfs_exclusive_operation {
struct btrfs_fs_info {
u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
unsigned long flags;
- struct btrfs_root *extent_root;
struct btrfs_root *tree_root;
struct btrfs_root *chunk_root;
struct btrfs_root *dev_root;
struct btrfs_root *fs_root;
- struct btrfs_root *csum_root;
struct btrfs_root *quota_root;
struct btrfs_root *uuid_root;
- struct btrfs_root *free_space_root;
struct btrfs_root *data_reloc_root;
/* the log root tree is a directory of all the other log roots */
struct btrfs_root *log_root_tree;
+ /* The tree that holds the global roots (csum, extent, etc) */
+ rwlock_t global_root_lock;
+ struct rb_root global_root_tree;
+
spinlock_t fs_roots_radix_lock;
struct radix_tree_root fs_roots_radix;
@@ -673,6 +673,12 @@ struct btrfs_fs_info {
u64 generation;
u64 last_trans_committed;
+ /*
+ * Generation of the last transaction used for block group relocation
+ * since the filesystem was last mounted (or 0 if none happened yet).
+ * Must be written and read while holding btrfs_fs_info::commit_root_sem.
+ */
+ u64 last_reloc_trans;
u64 avg_delayed_ref_runtime;
/*
@@ -815,7 +821,6 @@ struct btrfs_fs_info {
struct btrfs_workqueue *endio_write_workers;
struct btrfs_workqueue *endio_freespace_worker;
struct btrfs_workqueue *caching_workers;
- struct btrfs_workqueue *readahead_workers;
/*
* fixup workers take dirty pages that didn't properly go through
@@ -952,13 +957,6 @@ struct btrfs_fs_info {
struct btrfs_delayed_root *delayed_root;
- /* readahead tree */
- spinlock_t reada_lock;
- struct radix_tree_root reada_tree;
-
- /* readahead works cnt */
- atomic_t reada_works_cnt;
-
/* Extent buffer radix tree */
spinlock_t buffer_lock;
/* Entries are eb->start / sectorsize */
@@ -1003,13 +1001,6 @@ struct btrfs_fs_info {
struct crypto_shash *csum_shash;
- spinlock_t send_reloc_lock;
- /*
- * Number of send operations in progress.
- * Updated while holding fs_info::send_reloc_lock.
- */
- int send_in_progress;
-
/* Type of exclusive operation running, protected by super_lock */
enum btrfs_exclusive_operation exclusive_operation;
@@ -1110,6 +1101,8 @@ enum {
BTRFS_ROOT_HAS_LOG_TREE,
/* Qgroup flushing is in progress */
BTRFS_ROOT_QGROUP_FLUSHING,
+ /* We started the orphan cleanup for this root. */
+ BTRFS_ROOT_ORPHAN_CLEANUP,
};
/*
@@ -1128,6 +1121,8 @@ struct btrfs_qgroup_swapped_blocks {
* and for the extent tree extent_root root.
*/
struct btrfs_root {
+ struct rb_node rb_node;
+
struct extent_buffer *node;
struct extent_buffer *commit_root;
@@ -1178,8 +1173,6 @@ struct btrfs_root {
spinlock_t log_extents_lock[2];
struct list_head logged_list[2];
- int orphan_cleanup_state;
-
spinlock_t inode_lock;
/* red-black tree that keeps track of in-memory inodes */
struct rb_root inode_tree;
@@ -1960,8 +1953,8 @@ static inline void btrfs_set_node_key(const struct extent_buffer *eb,
}
/* struct btrfs_item */
-BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
-BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
+BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32);
+BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32);
BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
@@ -1976,25 +1969,36 @@ static inline struct btrfs_item *btrfs_item_nr(int nr)
return (struct btrfs_item *)btrfs_item_nr_offset(nr);
}
-static inline u32 btrfs_item_end(const struct extent_buffer *eb,
- struct btrfs_item *item)
-{
- return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
+#define BTRFS_ITEM_SETGET_FUNCS(member) \
+static inline u32 btrfs_item_##member(const struct extent_buffer *eb, \
+ int slot) \
+{ \
+ return btrfs_raw_item_##member(eb, btrfs_item_nr(slot)); \
+} \
+static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \
+ int slot, u32 val) \
+{ \
+ btrfs_set_raw_item_##member(eb, btrfs_item_nr(slot), val); \
+} \
+static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \
+ int slot) \
+{ \
+ struct btrfs_item *item = btrfs_item_nr(slot); \
+ return btrfs_token_raw_item_##member(token, item); \
+} \
+static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \
+ int slot, u32 val) \
+{ \
+ struct btrfs_item *item = btrfs_item_nr(slot); \
+ btrfs_set_token_raw_item_##member(token, item, val); \
}
-static inline u32 btrfs_item_end_nr(const struct extent_buffer *eb, int nr)
-{
- return btrfs_item_end(eb, btrfs_item_nr(nr));
-}
-
-static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
-{
- return btrfs_item_offset(eb, btrfs_item_nr(nr));
-}
+BTRFS_ITEM_SETGET_FUNCS(offset)
+BTRFS_ITEM_SETGET_FUNCS(size);
-static inline u32 btrfs_item_size_nr(const struct extent_buffer *eb, int nr)
+static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr)
{
- return btrfs_item_size(eb, btrfs_item_nr(nr));
+ return btrfs_item_offset(eb, nr) + btrfs_item_size(eb, nr);
}
static inline void btrfs_item_key(const struct extent_buffer *eb,
@@ -2257,6 +2261,11 @@ static inline bool btrfs_root_dead(const struct btrfs_root *root)
return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0;
}
+static inline u64 btrfs_root_id(const struct btrfs_root *root)
+{
+ return root->root_key.objectid;
+}
+
/* struct btrfs_root_backup */
BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
tree_root, 64);
@@ -2458,7 +2467,7 @@ static inline unsigned int leaf_data_end(const struct extent_buffer *leaf)
if (nr == 0)
return BTRFS_LEAF_DATA_SIZE(leaf->fs_info);
- return btrfs_item_offset_nr(leaf, nr - 1);
+ return btrfs_item_offset(leaf, nr - 1);
}
/* struct btrfs_file_extent_item */
@@ -2517,9 +2526,9 @@ BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
*/
static inline u32 btrfs_file_extent_inline_item_len(
const struct extent_buffer *eb,
- struct btrfs_item *e)
+ int nr)
{
- return btrfs_item_size(eb, e) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
+ return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
}
/* btrfs_qgroup_status_item */
@@ -2611,11 +2620,11 @@ BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
/* helper function to cast into the data area of the leaf. */
#define btrfs_item_ptr(leaf, slot, type) \
((type *)(BTRFS_LEAF_DATA_OFFSET + \
- btrfs_item_offset_nr(leaf, slot)))
+ btrfs_item_offset(leaf, slot)))
#define btrfs_item_ptr_offset(leaf, slot) \
((unsigned long)(BTRFS_LEAF_DATA_OFFSET + \
- btrfs_item_offset_nr(leaf, slot)))
+ btrfs_item_offset(leaf, slot)))
static inline u32 btrfs_crc32c(u32 crc, const void *address, unsigned length)
{
@@ -2719,7 +2728,7 @@ struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
u64 empty_size,
enum btrfs_lock_nesting nest);
void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
+ u64 root_id,
struct extent_buffer *buf,
u64 parent, int last_ref);
int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
@@ -3114,36 +3123,6 @@ int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 offset);
int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset);
-/* inode-item.c */
-int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- const char *name, int name_len,
- u64 inode_objectid, u64 ref_objectid, u64 index);
-int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- const char *name, int name_len,
- u64 inode_objectid, u64 ref_objectid, u64 *index);
-int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 objectid);
-int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, struct btrfs_path *path,
- struct btrfs_key *location, int mod);
-
-struct btrfs_inode_extref *
-btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- const char *name, int name_len,
- u64 inode_objectid, u64 ref_objectid, int ins_len,
- int cow);
-
-struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
- int slot, const char *name,
- int name_len);
-struct btrfs_inode_extref *btrfs_find_name_in_ext_backref(
- struct extent_buffer *leaf, int slot, u64 ref_objectid,
- const char *name, int name_len);
/* file-item.c */
struct btrfs_dio_private;
int btrfs_del_csums(struct btrfs_trans_handle *trans,
@@ -3203,10 +3182,6 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
int btrfs_delete_subvolume(struct inode *dir, struct dentry *dentry);
int btrfs_truncate_block(struct btrfs_inode *inode, loff_t from, loff_t len,
int front);
-int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_inode *inode, u64 new_size,
- u32 min_type, u64 *extents_found);
int btrfs_start_delalloc_snapshot(struct btrfs_root *root, bool in_reclaim_context);
int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, long nr,
@@ -3305,6 +3280,9 @@ bool btrfs_exclop_start_try_lock(struct btrfs_fs_info *fs_info,
enum btrfs_exclusive_operation type);
void btrfs_exclop_start_unlock(struct btrfs_fs_info *fs_info);
void btrfs_exclop_finish(struct btrfs_fs_info *fs_info);
+void btrfs_exclop_balance(struct btrfs_fs_info *fs_info,
+ enum btrfs_exclusive_operation op);
+
/* file.c */
int __init btrfs_auto_defrag_init(void);
@@ -3821,23 +3799,6 @@ static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info)
btrfs_bio_counter_sub(fs_info, 1);
}
-/* reada.c */
-struct reada_control {
- struct btrfs_fs_info *fs_info; /* tree to prefetch */
- struct btrfs_key key_start;
- struct btrfs_key key_end; /* exclusive */
- atomic_t elems;
- struct kref refcnt;
- wait_queue_head_t wait;
-};
-struct reada_control *btrfs_reada_add(struct btrfs_root *root,
- struct btrfs_key *start, struct btrfs_key *end);
-int btrfs_reada_wait(void *handle);
-void btrfs_reada_detach(void *handle);
-int btree_readahead_hook(struct extent_buffer *eb, int err);
-void btrfs_reada_remove_dev(struct btrfs_device *dev);
-void btrfs_reada_undo_remove_dev(struct btrfs_device *dev);
-
static inline int is_fstree(u64 rootid)
{
if (rootid == BTRFS_FS_TREE_OBJECTID ||
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