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-rw-r--r--fs/btrfs/ctree.h109
1 files changed, 77 insertions, 32 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9c7e466f27a9..aac3d6f4e35b 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -374,6 +374,7 @@ struct btrfs_path {
unsigned int search_commit_root:1;
unsigned int need_commit_sem:1;
unsigned int skip_release_on_error:1;
+ unsigned int recurse:1;
};
#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \
sizeof(struct btrfs_item))
@@ -494,7 +495,7 @@ enum btrfs_orphan_cleanup_state {
ORPHAN_CLEANUP_DONE = 2,
};
-void btrfs_init_async_reclaim_work(struct work_struct *work);
+void btrfs_init_async_reclaim_work(struct btrfs_fs_info *fs_info);
/* fs_info */
struct reloc_control;
@@ -541,11 +542,6 @@ enum {
/* Used to record internally whether fs has been frozen */
BTRFS_FS_FROZEN,
/*
- * Indicate that a whole-filesystem exclusive operation is running
- * (device replace, resize, device add/delete, balance)
- */
- BTRFS_FS_EXCL_OP,
- /*
* Indicate that balance has been set up from the ioctl and is in the
* main phase. The fs_info::balance_ctl is initialized.
* Set and cleared while holding fs_info::balance_mutex.
@@ -565,6 +561,19 @@ enum {
BTRFS_FS_DISCARD_RUNNING,
};
+/*
+ * Exclusive operations (device replace, resize, device add/remove, balance)
+ */
+enum btrfs_exclusive_operation {
+ BTRFS_EXCLOP_NONE,
+ BTRFS_EXCLOP_BALANCE,
+ BTRFS_EXCLOP_DEV_ADD,
+ BTRFS_EXCLOP_DEV_REMOVE,
+ BTRFS_EXCLOP_DEV_REPLACE,
+ BTRFS_EXCLOP_RESIZE,
+ BTRFS_EXCLOP_SWAP_ACTIVATE,
+};
+
struct btrfs_fs_info {
u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
unsigned long flags;
@@ -912,6 +921,7 @@ struct btrfs_fs_info {
/* Used to reclaim the metadata space in the background. */
struct work_struct async_reclaim_work;
+ struct work_struct async_data_reclaim_work;
spinlock_t unused_bgs_lock;
struct list_head unused_bgs;
@@ -935,6 +945,9 @@ struct btrfs_fs_info {
*/
int send_in_progress;
+ /* Type of exclusive operation running */
+ unsigned long exclusive_operation;
+
#ifdef CONFIG_BTRFS_FS_REF_VERIFY
spinlock_t ref_verify_lock;
struct rb_root block_tree;
@@ -1181,24 +1194,40 @@ struct btrfs_root {
#endif
};
-struct btrfs_clone_extent_info {
+/*
+ * Structure that conveys information about an extent that is going to replace
+ * all the extents in a file range.
+ */
+struct btrfs_replace_extent_info {
u64 disk_offset;
u64 disk_len;
u64 data_offset;
u64 data_len;
u64 file_offset;
+ /* Pointer to a file extent item of type regular or prealloc. */
char *extent_buf;
- u32 item_size;
+ /*
+ * Set to true when attempting to replace a file range with a new extent
+ * described by this structure, set to false when attempting to clone an
+ * existing extent into a file range.
+ */
+ bool is_new_extent;
+ /* Meaningful only if is_new_extent is true. */
+ int qgroup_reserved;
+ /*
+ * Meaningful only if is_new_extent is true.
+ * Used to track how many extent items we have already inserted in a
+ * subvolume tree that refer to the extent described by this structure,
+ * so that we know when to create a new delayed ref or update an existing
+ * one.
+ */
+ int insertions;
};
struct btrfs_file_private {
void *filldir_buf;
};
-static inline u32 btrfs_inode_sectorsize(const struct inode *inode)
-{
- return btrfs_sb(inode->i_sb)->sectorsize;
-}
static inline u32 BTRFS_LEAF_DATA_SIZE(const struct btrfs_fs_info *info)
{
@@ -1391,6 +1420,16 @@ static inline void btrfs_init_map_token(struct btrfs_map_token *token,
#define cpu_to_le8(v) (v)
#define __le8 u8
+static inline u8 get_unaligned_le8(const void *p)
+{
+ return *(u8 *)p;
+}
+
+static inline void put_unaligned_le8(u8 val, void *p)
+{
+ *(u8 *)p = val;
+}
+
#define read_eb_member(eb, ptr, type, member, result) (\
read_extent_buffer(eb, (char *)(result), \
((unsigned long)(ptr)) + \
@@ -1449,27 +1488,25 @@ static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\
static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
{ \
const type *p = page_address(eb->pages[0]); \
- u##bits res = le##bits##_to_cpu(p->member); \
- return res; \
+ return get_unaligned_le##bits(&p->member); \
} \
static inline void btrfs_set_##name(const struct extent_buffer *eb, \
u##bits val) \
{ \
type *p = page_address(eb->pages[0]); \
- p->member = cpu_to_le##bits(val); \
+ put_unaligned_le##bits(val, &p->member); \
}
#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
static inline u##bits btrfs_##name(const type *s) \
{ \
- return le##bits##_to_cpu(s->member); \
+ return get_unaligned_le##bits(&s->member); \
} \
static inline void btrfs_set_##name(type *s, u##bits val) \
{ \
- s->member = cpu_to_le##bits(val); \
+ put_unaligned_le##bits(val, &s->member); \
}
-
static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
struct btrfs_dev_item *s)
{
@@ -2262,7 +2299,7 @@ BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
int btrfs_super_csum_size(const struct btrfs_super_block *s);
const char *btrfs_super_csum_name(u16 csum_type);
const char *btrfs_super_csum_driver(u16 csum_type);
-size_t __const btrfs_get_num_csums(void);
+size_t __attribute_const__ btrfs_get_num_csums(void);
/*
@@ -2518,13 +2555,14 @@ int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans,
u64 bytenr, u64 num_bytes);
int btrfs_exclude_logged_extents(struct extent_buffer *eb);
int btrfs_cross_ref_exist(struct btrfs_root *root,
- u64 objectid, u64 offset, u64 bytenr);
+ u64 objectid, u64 offset, u64 bytenr, bool strict);
struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 parent, u64 root_objectid,
const struct btrfs_disk_key *key,
int level, u64 hint,
- u64 empty_size);
+ u64 empty_size,
+ enum btrfs_lock_nesting nest);
void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *buf,
@@ -2592,6 +2630,8 @@ enum btrfs_reserve_flush_enum {
*
* Can be interruped by fatal signal.
*/
+ BTRFS_RESERVE_FLUSH_DATA,
+ BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE,
BTRFS_RESERVE_FLUSH_ALL,
/*
@@ -2619,7 +2659,7 @@ enum btrfs_flush_state {
int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
struct btrfs_block_rsv *rsv,
int nitems, bool use_global_rsv);
-void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info,
+void btrfs_subvolume_release_metadata(struct btrfs_root *root,
struct btrfs_block_rsv *rsv);
void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes);
@@ -2651,8 +2691,6 @@ void btrfs_set_item_key_safe(struct btrfs_fs_info *fs_info,
struct btrfs_path *path,
const struct btrfs_key *new_key);
struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
-struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
-struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root);
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *key, int lowest_level,
u64 min_trans);
@@ -2665,7 +2703,8 @@ struct extent_buffer *btrfs_read_node_slot(struct extent_buffer *parent,
int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf,
struct extent_buffer *parent, int parent_slot,
- struct extent_buffer **cow_ret);
+ struct extent_buffer **cow_ret,
+ enum btrfs_lock_nesting nest);
int btrfs_copy_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *buf,
@@ -2713,7 +2752,7 @@ static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path,
const struct btrfs_key *cpu_key, u32 *data_size,
- u32 total_data, u32 total_size, int nr);
+ int nr);
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,
const struct btrfs_key *key, void *data, u32 data_size);
int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
@@ -2930,11 +2969,15 @@ void btrfs_inode_safe_disk_i_size_write(struct inode *inode, u64 new_i_size);
u64 btrfs_file_extent_end(const struct btrfs_path *path);
/* inode.c */
+blk_status_t btrfs_submit_data_bio(struct inode *inode, struct bio *bio,
+ int mirror_num, unsigned long bio_flags);
+int btrfs_verify_data_csum(struct btrfs_io_bio *io_bio, u64 phy_offset,
+ struct page *page, u64 start, u64 end, int mirror);
struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
u64 start, u64 len);
noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
u64 *orig_start, u64 *orig_block_len,
- u64 *ram_bytes);
+ u64 *ram_bytes, bool strict);
void __btrfs_del_delalloc_inode(struct btrfs_root *root,
struct btrfs_inode *inode);
@@ -2956,7 +2999,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
u32 min_type);
int btrfs_start_delalloc_snapshot(struct btrfs_root *root);
-int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr);
+int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, u64 nr);
int btrfs_set_extent_delalloc(struct btrfs_inode *inode, u64 start, u64 end,
unsigned int extra_bits,
struct extent_state **cached_state);
@@ -3017,6 +3060,7 @@ int btrfs_writepage_cow_fixup(struct page *page, u64 start, u64 end);
void btrfs_writepage_endio_finish_ordered(struct page *page, u64 start,
u64 end, int uptodate);
extern const struct dentry_operations btrfs_dentry_operations;
+ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter);
/* ioctl.c */
long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
@@ -3031,6 +3075,9 @@ void btrfs_get_block_group_info(struct list_head *groups_list,
struct btrfs_ioctl_space_info *space);
void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info,
struct btrfs_ioctl_balance_args *bargs);
+bool btrfs_exclop_start(struct btrfs_fs_info *fs_info,
+ enum btrfs_exclusive_operation type);
+void btrfs_exclop_finish(struct btrfs_fs_info *fs_info);
/* file.c */
int __init btrfs_auto_defrag_init(void);
@@ -3053,9 +3100,9 @@ int __btrfs_drop_extents(struct btrfs_trans_handle *trans,
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode, u64 start,
u64 end, int drop_cache);
-int btrfs_punch_hole_range(struct inode *inode, struct btrfs_path *path,
+int btrfs_replace_file_extents(struct inode *inode, struct btrfs_path *path,
const u64 start, const u64 end,
- struct btrfs_clone_extent_info *clone_info,
+ struct btrfs_replace_extent_info *extent_info,
struct btrfs_trans_handle **trans_out);
int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode, u64 start, u64 end);
@@ -3536,9 +3583,7 @@ static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
/* Sanity test specific functions */
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
-void btrfs_test_inode_set_ops(struct inode *inode);
void btrfs_test_destroy_inode(struct inode *inode);
-
static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
{
return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.