diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 366 |
1 files changed, 236 insertions, 130 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 68ca41dbbef3..129d26226e70 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -35,6 +35,7 @@ struct btrfs_trans_handle; struct btrfs_transaction; struct btrfs_pending_snapshot; +struct btrfs_delayed_ref_root; extern struct kmem_cache *btrfs_trans_handle_cachep; extern struct kmem_cache *btrfs_bit_radix_cachep; extern struct kmem_cache *btrfs_path_cachep; @@ -109,13 +110,26 @@ static inline unsigned long btrfs_chunk_item_size(int num_stripes) } /* - * File system states + * Runtime (in-memory) states of filesystem */ -#define BTRFS_FS_STATE_ERROR 0 -#define BTRFS_FS_STATE_REMOUNTING 1 -#define BTRFS_FS_STATE_TRANS_ABORTED 2 -#define BTRFS_FS_STATE_DEV_REPLACING 3 -#define BTRFS_FS_STATE_DUMMY_FS_INFO 4 +enum { + /* Global indicator of serious filesystem errors */ + BTRFS_FS_STATE_ERROR, + /* + * Filesystem is being remounted, allow to skip some operations, like + * defrag + */ + BTRFS_FS_STATE_REMOUNTING, + /* Track if a transaction abort has been reported on this filesystem */ + BTRFS_FS_STATE_TRANS_ABORTED, + /* + * Bio operations should be blocked on this filesystem because a source + * or target device is being destroyed as part of a device replace + */ + BTRFS_FS_STATE_DEV_REPLACING, + /* The btrfs_fs_info created for self-tests */ + BTRFS_FS_STATE_DUMMY_FS_INFO, +}; #define BTRFS_BACKREF_REV_MAX 256 #define BTRFS_BACKREF_REV_SHIFT 56 @@ -195,9 +209,10 @@ struct btrfs_root_backup { * it currently lacks any block count etc etc */ struct btrfs_super_block { - u8 csum[BTRFS_CSUM_SIZE]; /* the first 4 fields must match struct btrfs_header */ - u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ + u8 csum[BTRFS_CSUM_SIZE]; + /* FS specific UUID, visible to user */ + u8 fsid[BTRFS_FSID_SIZE]; __le64 bytenr; /* this block number */ __le64 flags; @@ -234,8 +249,11 @@ struct btrfs_super_block { __le64 cache_generation; __le64 uuid_tree_generation; + /* the UUID written into btree blocks */ + u8 metadata_uuid[BTRFS_FSID_SIZE]; + /* future expansion */ - __le64 reserved[30]; + __le64 reserved[28]; u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; } __attribute__ ((__packed__)); @@ -265,7 +283,8 @@ struct btrfs_super_block { BTRFS_FEATURE_INCOMPAT_RAID56 | \ BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ - BTRFS_FEATURE_INCOMPAT_NO_HOLES) + BTRFS_FEATURE_INCOMPAT_NO_HOLES | \ + BTRFS_FEATURE_INCOMPAT_METADATA_UUID) #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) @@ -316,7 +335,7 @@ struct btrfs_node { * The slots array records the index of the item or block pointer * used while walking the tree. */ -enum { READA_NONE = 0, READA_BACK, READA_FORWARD }; +enum { READA_NONE, READA_BACK, READA_FORWARD }; struct btrfs_path { struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; int slots[BTRFS_MAX_LEVEL]; @@ -360,9 +379,7 @@ struct btrfs_dev_replace { struct btrfs_device *tgtdev; struct mutex lock_finishing_cancel_unmount; - rwlock_t lock; - atomic_t blocking_readers; - wait_queue_head_t read_lock_wq; + struct rw_semaphore rwsem; struct btrfs_scrub_progress scrub_progress; @@ -443,13 +460,19 @@ struct btrfs_space_info { struct kobject *block_group_kobjs[BTRFS_NR_RAID_TYPES]; }; -#define BTRFS_BLOCK_RSV_GLOBAL 1 -#define BTRFS_BLOCK_RSV_DELALLOC 2 -#define BTRFS_BLOCK_RSV_TRANS 3 -#define BTRFS_BLOCK_RSV_CHUNK 4 -#define BTRFS_BLOCK_RSV_DELOPS 5 -#define BTRFS_BLOCK_RSV_EMPTY 6 -#define BTRFS_BLOCK_RSV_TEMP 7 +/* + * Types of block reserves + */ +enum { + BTRFS_BLOCK_RSV_GLOBAL, + BTRFS_BLOCK_RSV_DELALLOC, + BTRFS_BLOCK_RSV_TRANS, + BTRFS_BLOCK_RSV_CHUNK, + BTRFS_BLOCK_RSV_DELOPS, + BTRFS_BLOCK_RSV_DELREFS, + BTRFS_BLOCK_RSV_EMPTY, + BTRFS_BLOCK_RSV_TEMP, +}; struct btrfs_block_rsv { u64 size; @@ -509,18 +532,18 @@ struct btrfs_free_cluster { }; enum btrfs_caching_type { - BTRFS_CACHE_NO = 0, - BTRFS_CACHE_STARTED = 1, - BTRFS_CACHE_FAST = 2, - BTRFS_CACHE_FINISHED = 3, - BTRFS_CACHE_ERROR = 4, + BTRFS_CACHE_NO, + BTRFS_CACHE_STARTED, + BTRFS_CACHE_FAST, + BTRFS_CACHE_FINISHED, + BTRFS_CACHE_ERROR, }; enum btrfs_disk_cache_state { - BTRFS_DC_WRITTEN = 0, - BTRFS_DC_ERROR = 1, - BTRFS_DC_CLEAR = 2, - BTRFS_DC_SETUP = 3, + BTRFS_DC_WRITTEN, + BTRFS_DC_ERROR, + BTRFS_DC_CLEAR, + BTRFS_DC_SETUP, }; struct btrfs_caching_control { @@ -712,41 +735,64 @@ struct btrfs_fs_devices; struct btrfs_balance_control; struct btrfs_delayed_root; -#define BTRFS_FS_BARRIER 1 -#define BTRFS_FS_CLOSING_START 2 -#define BTRFS_FS_CLOSING_DONE 3 -#define BTRFS_FS_LOG_RECOVERING 4 -#define BTRFS_FS_OPEN 5 -#define BTRFS_FS_QUOTA_ENABLED 6 -#define BTRFS_FS_UPDATE_UUID_TREE_GEN 9 -#define BTRFS_FS_CREATING_FREE_SPACE_TREE 10 -#define BTRFS_FS_BTREE_ERR 11 -#define BTRFS_FS_LOG1_ERR 12 -#define BTRFS_FS_LOG2_ERR 13 -#define BTRFS_FS_QUOTA_OVERRIDE 14 -/* Used to record internally whether fs has been frozen */ -#define BTRFS_FS_FROZEN 15 - /* - * Indicate that a whole-filesystem exclusive operation is running - * (device replace, resize, device add/delete, balance) + * Block group or device which contains an active swapfile. Used for preventing + * unsafe operations while a swapfile is active. + * + * These are sorted on (ptr, inode) (note that a block group or device can + * contain more than one swapfile). We compare the pointer values because we + * don't actually care what the object is, we just need a quick check whether + * the object exists in the rbtree. */ -#define BTRFS_FS_EXCL_OP 16 +struct btrfs_swapfile_pin { + struct rb_node node; + void *ptr; + struct inode *inode; + /* + * If true, ptr points to a struct btrfs_block_group_cache. Otherwise, + * ptr points to a struct btrfs_device. + */ + bool is_block_group; +}; -/* - * To info transaction_kthread we need an immediate commit so it doesn't - * need to wait for commit_interval - */ -#define BTRFS_FS_NEED_ASYNC_COMMIT 17 +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, + BTRFS_FS_OPEN, + BTRFS_FS_QUOTA_ENABLED, + BTRFS_FS_UPDATE_UUID_TREE_GEN, + BTRFS_FS_CREATING_FREE_SPACE_TREE, + BTRFS_FS_BTREE_ERR, + BTRFS_FS_LOG1_ERR, + BTRFS_FS_LOG2_ERR, + BTRFS_FS_QUOTA_OVERRIDE, + /* 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, + /* + * To info transaction_kthread we need an immediate commit so it + * doesn't need to wait for commit_interval + */ + BTRFS_FS_NEED_ASYNC_COMMIT, + /* + * Indicate that balance has been set up from the ioctl and is in the + * main phase. The fs_info::balance_ctl is initialized. + */ + BTRFS_FS_BALANCE_RUNNING, -/* - * Indicate that balance has been set up from the ioctl and is in the main - * phase. The fs_info::balance_ctl is initialized. - */ -#define BTRFS_FS_BALANCE_RUNNING 18 + /* Indicate that the cleaner thread is awake and doing something. */ + BTRFS_FS_CLEANER_RUNNING, +}; struct btrfs_fs_info { - u8 fsid[BTRFS_FSID_SIZE]; u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; unsigned long flags; struct btrfs_root *extent_root; @@ -790,6 +836,8 @@ struct btrfs_fs_info { struct btrfs_block_rsv chunk_block_rsv; /* block reservation for delayed operations */ struct btrfs_block_rsv delayed_block_rsv; + /* block reservation for delayed refs */ + struct btrfs_block_rsv delayed_refs_rsv; struct btrfs_block_rsv empty_block_rsv; @@ -886,7 +934,8 @@ struct btrfs_fs_info { spinlock_t delayed_iput_lock; struct list_head delayed_iputs; - struct mutex cleaner_delayed_iput_mutex; + atomic_t nr_delayed_iputs; + wait_queue_head_t delayed_iputs_wait; /* this protects tree_mod_seq_list */ spinlock_t tree_mod_seq_lock; @@ -1026,10 +1075,13 @@ struct btrfs_fs_info { atomic_t scrubs_paused; atomic_t scrub_cancel_req; wait_queue_head_t scrub_pause_wait; - int scrub_workers_refcnt; + /* + * The worker pointers are NULL iff the refcount is 0, ie. scrub is not + * running. + */ + refcount_t scrub_workers_refcnt; struct btrfs_workqueue *scrub_workers; struct btrfs_workqueue *scrub_wr_completion_workers; - struct btrfs_workqueue *scrub_nocow_workers; struct btrfs_workqueue *scrub_parity_workers; #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY @@ -1100,9 +1152,6 @@ struct btrfs_fs_info { struct mutex unused_bg_unpin_mutex; struct mutex delete_unused_bgs_mutex; - /* For btrfs to record security options */ - struct security_mnt_opts security_opts; - /* * Chunks that can't be freed yet (under a trim/discard operation) * and will be latter freed. Protected by fs_info->chunk_mutex. @@ -1114,6 +1163,10 @@ struct btrfs_fs_info { u32 sectorsize; u32 stripesize; + /* Block groups and devices containing active swapfiles. */ + spinlock_t swapfile_pins_lock; + struct rb_root swapfile_pins; + #ifdef CONFIG_BTRFS_FS_REF_VERIFY spinlock_t ref_verify_lock; struct rb_root block_tree; @@ -1133,22 +1186,42 @@ struct btrfs_subvolume_writers { /* * The state of btrfs root */ +enum { + /* + * btrfs_record_root_in_trans is a multi-step process, and it can race + * with the balancing code. But the race is very small, and only the + * first time the root is added to each transaction. So IN_TRANS_SETUP + * is used to tell us when more checks are required + */ + BTRFS_ROOT_IN_TRANS_SETUP, + BTRFS_ROOT_REF_COWS, + BTRFS_ROOT_TRACK_DIRTY, + BTRFS_ROOT_IN_RADIX, + BTRFS_ROOT_ORPHAN_ITEM_INSERTED, + BTRFS_ROOT_DEFRAG_RUNNING, + BTRFS_ROOT_FORCE_COW, + BTRFS_ROOT_MULTI_LOG_TASKS, + BTRFS_ROOT_DIRTY, + BTRFS_ROOT_DELETING, + + /* + * Reloc tree is orphan, only kept here for qgroup delayed subtree scan + * + * Set for the subvolume tree owning the reloc tree. + */ + BTRFS_ROOT_DEAD_RELOC_TREE, +}; + /* - * btrfs_record_root_in_trans is a multi-step process, - * and it can race with the balancing code. But the - * race is very small, and only the first time the root - * is added to each transaction. So IN_TRANS_SETUP - * is used to tell us when more checks are required + * Record swapped tree blocks of a subvolume tree for delayed subtree trace + * code. For detail check comment in fs/btrfs/qgroup.c. */ -#define BTRFS_ROOT_IN_TRANS_SETUP 0 -#define BTRFS_ROOT_REF_COWS 1 -#define BTRFS_ROOT_TRACK_DIRTY 2 -#define BTRFS_ROOT_IN_RADIX 3 -#define BTRFS_ROOT_ORPHAN_ITEM_INSERTED 4 -#define BTRFS_ROOT_DEFRAG_RUNNING 5 -#define BTRFS_ROOT_FORCE_COW 6 -#define BTRFS_ROOT_MULTI_LOG_TASKS 7 -#define BTRFS_ROOT_DIRTY 8 +struct btrfs_qgroup_swapped_blocks { + spinlock_t lock; + /* RM_EMPTY_ROOT() of above blocks[] */ + bool swapped; + struct rb_root blocks[BTRFS_MAX_LEVEL]; +}; /* * in ram representation of the tree. extent_root is used for all allocations @@ -1261,6 +1334,14 @@ struct btrfs_root { u64 nr_ordered_extents; /* + * Not empty if this subvolume root has gone through tree block swap + * (relocation) + * + * Will be used by reloc_control::dirty_subvol_roots. + */ + struct list_head reloc_dirty_list; + + /* * Number of currently running SEND ioctls to prevent * manipulation with the read-only status via SUBVOL_SETFLAGS */ @@ -1274,6 +1355,12 @@ struct btrfs_root { u64 qgroup_meta_rsv_pertrans; u64 qgroup_meta_rsv_prealloc; + /* Number of active swapfiles */ + atomic_t nr_swapfiles; + + /* Record pairs of swapped blocks for qgroup */ + struct btrfs_qgroup_swapped_blocks swapped_blocks; + #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS u64 alloc_bytenr; #endif @@ -2570,10 +2657,10 @@ static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) /* extent-tree.c */ enum btrfs_inline_ref_type { - BTRFS_REF_TYPE_INVALID = 0, - BTRFS_REF_TYPE_BLOCK = 1, - BTRFS_REF_TYPE_DATA = 2, - BTRFS_REF_TYPE_ANY = 3, + BTRFS_REF_TYPE_INVALID, + BTRFS_REF_TYPE_BLOCK, + BTRFS_REF_TYPE_DATA, + BTRFS_REF_TYPE_ANY, }; int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, @@ -2599,7 +2686,7 @@ static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, } int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans); -int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans); +bool btrfs_check_space_for_delayed_refs(struct btrfs_fs_info *fs_info); void btrfs_dec_block_group_reservations(struct btrfs_fs_info *fs_info, const u64 start); void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg); @@ -2611,6 +2698,9 @@ int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, unsigned long count); int btrfs_async_run_delayed_refs(struct btrfs_fs_info *fs_info, unsigned long count, u64 transid, int wait); +void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info, + struct btrfs_delayed_ref_root *delayed_refs, + struct btrfs_delayed_ref_head *head); int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len); int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, u64 bytenr, @@ -2713,10 +2803,13 @@ enum btrfs_reserve_flush_enum { enum btrfs_flush_state { FLUSH_DELAYED_ITEMS_NR = 1, FLUSH_DELAYED_ITEMS = 2, - FLUSH_DELALLOC = 3, - FLUSH_DELALLOC_WAIT = 4, - ALLOC_CHUNK = 5, - COMMIT_TRANS = 6, + FLUSH_DELAYED_REFS_NR = 3, + FLUSH_DELAYED_REFS = 4, + FLUSH_DELALLOC = 5, + FLUSH_DELALLOC_WAIT = 6, + ALLOC_CHUNK = 7, + ALLOC_CHUNK_FORCE = 8, + COMMIT_TRANS = 9, }; int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes); @@ -2767,6 +2860,13 @@ int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, void btrfs_block_rsv_release(struct btrfs_fs_info *fs_info, struct btrfs_block_rsv *block_rsv, u64 num_bytes); +void btrfs_delayed_refs_rsv_release(struct btrfs_fs_info *fs_info, int nr); +void btrfs_update_delayed_refs_rsv(struct btrfs_trans_handle *trans); +int btrfs_delayed_refs_rsv_refill(struct btrfs_fs_info *fs_info, + enum btrfs_reserve_flush_enum flush); +void btrfs_migrate_to_delayed_refs_rsv(struct btrfs_fs_info *fs_info, + struct btrfs_block_rsv *src, + u64 num_bytes); int btrfs_inc_block_group_ro(struct btrfs_block_group_cache *cache); void btrfs_dec_block_group_ro(struct btrfs_block_group_cache *cache); void btrfs_put_block_group_cache(struct btrfs_fs_info *info); @@ -2959,7 +3059,6 @@ static inline void free_fs_info(struct btrfs_fs_info *fs_info) kfree(fs_info->free_space_root); kfree(fs_info->super_copy); kfree(fs_info->super_for_commit); - security_free_mnt_opts(&fs_info->security_opts); kvfree(fs_info); } @@ -3116,8 +3215,7 @@ void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, /* inode.c */ struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, - struct page *page, size_t pg_offset, u64 start, - u64 len, int create); + 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); @@ -3141,7 +3239,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, struct inode *inode, u64 new_size, u32 min_type); -int btrfs_start_delalloc_inodes(struct btrfs_root *root); +int btrfs_start_delalloc_snapshot(struct btrfs_root *root); int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int nr); int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, unsigned int extra_bits, @@ -3150,9 +3248,16 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, struct btrfs_root *new_root, struct btrfs_root *parent_root, u64 new_dirid); -int btrfs_merge_bio_hook(struct page *page, unsigned long offset, - size_t size, struct bio *bio, - unsigned long bio_flags); + void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state, + unsigned *bits); +void btrfs_clear_delalloc_extent(struct inode *inode, + struct extent_state *state, unsigned *bits); +void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new, + struct extent_state *other); +void btrfs_split_delalloc_extent(struct inode *inode, + struct extent_state *orig, u64 split); +int btrfs_bio_fits_in_stripe(struct page *page, size_t size, struct bio *bio, + unsigned long bio_flags); void btrfs_set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end); vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf); int btrfs_readpage(struct file *file, struct page *page); @@ -3163,6 +3268,9 @@ void btrfs_destroy_inode(struct inode *inode); int btrfs_drop_inode(struct inode *inode); int __init btrfs_init_cachep(void); void __cold btrfs_destroy_cachep(void); +struct inode *btrfs_iget_path(struct super_block *s, struct btrfs_key *location, + struct btrfs_root *root, int *new, + struct btrfs_path *path); 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, @@ -3179,6 +3287,7 @@ int btrfs_orphan_cleanup(struct btrfs_root *root); int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); void btrfs_add_delayed_iput(struct inode *inode); void btrfs_run_delayed_iputs(struct btrfs_fs_info *fs_info); +int btrfs_wait_on_delayed_iputs(struct btrfs_fs_info *fs_info); int btrfs_prealloc_file_range(struct inode *inode, int mode, u64 start, u64 num_bytes, u64 min_size, loff_t actual_len, u64 *alloc_hint); @@ -3186,6 +3295,12 @@ int btrfs_prealloc_file_range_trans(struct inode *inode, struct btrfs_trans_handle *trans, int mode, u64 start, u64 num_bytes, u64 min_size, loff_t actual_len, u64 *alloc_hint); +int btrfs_run_delalloc_range(struct inode *inode, struct page *locked_page, + u64 start, u64 end, int *page_started, unsigned long *nr_written, + struct writeback_control *wbc); +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; /* ioctl.c */ @@ -3201,9 +3316,6 @@ 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); -int btrfs_dedupe_file_range(struct file *src_file, loff_t src_loff, - struct file *dst_file, loff_t dst_loff, - u64 olen); /* file.c */ int __init btrfs_auto_defrag_init(void); @@ -3233,8 +3345,9 @@ int btrfs_dirty_pages(struct inode *inode, struct page **pages, size_t num_pages, loff_t pos, size_t write_bytes, struct extent_state **cached); int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); -int btrfs_clone_file_range(struct file *file_in, loff_t pos_in, - struct file *file_out, loff_t pos_out, u64 len); +loff_t btrfs_remap_file_range(struct file *file_in, loff_t pos_in, + struct file *file_out, loff_t pos_out, + loff_t len, unsigned int remap_flags); /* tree-defrag.c */ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, @@ -3336,31 +3449,17 @@ void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); #if defined(CONFIG_DYNAMIC_DEBUG) #define btrfs_debug(fs_info, fmt, args...) \ -do { \ - DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ - btrfs_printk(fs_info, KERN_DEBUG fmt, ##args); \ -} while (0) -#define btrfs_debug_in_rcu(fs_info, fmt, args...) \ -do { \ - DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ - btrfs_printk_in_rcu(fs_info, KERN_DEBUG fmt, ##args); \ -} while (0) + _dynamic_func_call_no_desc(fmt, btrfs_printk, \ + fs_info, KERN_DEBUG fmt, ##args) +#define btrfs_debug_in_rcu(fs_info, fmt, args...) \ + _dynamic_func_call_no_desc(fmt, btrfs_printk_in_rcu, \ + fs_info, KERN_DEBUG fmt, ##args) #define btrfs_debug_rl_in_rcu(fs_info, fmt, args...) \ -do { \ - DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ - btrfs_printk_rl_in_rcu(fs_info, KERN_DEBUG fmt, \ - ##args);\ -} while (0) -#define btrfs_debug_rl(fs_info, fmt, args...) \ -do { \ - DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ - btrfs_printk_ratelimited(fs_info, KERN_DEBUG fmt, \ - ##args); \ -} while (0) + _dynamic_func_call_no_desc(fmt, btrfs_printk_rl_in_rcu, \ + fs_info, KERN_DEBUG fmt, ##args) +#define btrfs_debug_rl(fs_info, fmt, args...) \ + _dynamic_func_call_no_desc(fmt, btrfs_printk_ratelimited, \ + fs_info, KERN_DEBUG fmt, ##args) #elif defined(DEBUG) #define btrfs_debug(fs_info, fmt, args...) \ btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) @@ -3411,20 +3510,27 @@ do { \ rcu_read_unlock(); \ } while (0) -#ifdef CONFIG_BTRFS_ASSERT - __cold static inline void assfail(const char *expr, const char *file, int line) { - pr_err("assertion failed: %s, file: %s, line: %d\n", - expr, file, line); - BUG(); + if (IS_ENABLED(CONFIG_BTRFS_ASSERT)) { + pr_err("assertion failed: %s, file: %s, line: %d\n", + expr, file, line); + BUG(); + } } #define ASSERT(expr) \ (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) + +/* + * Use that for functions that are conditionally exported for sanity tests but + * otherwise static + */ +#ifndef CONFIG_BTRFS_FS_RUN_SANITY_TESTS +#define EXPORT_FOR_TESTS static #else -#define ASSERT(expr) ((void)0) +#define EXPORT_FOR_TESTS #endif __cold |