/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * ocfs2.h * * Defines macros and structures used in OCFS2 * * Copyright (C) 2002, 2004 Oracle. All rights reserved. */ #ifndef OCFS2_H #define OCFS2_H #include <linux/spinlock.h> #include <linux/sched.h> #include <linux/wait.h> #include <linux/list.h> #include <linux/llist.h> #include <linux/rbtree.h> #include <linux/workqueue.h> #include <linux/kref.h> #include <linux/mutex.h> #include <linux/lockdep.h> #include <linux/jbd2.h> /* For union ocfs2_dlm_lksb */ #include "stackglue.h" #include "ocfs2_fs.h" #include "ocfs2_lockid.h" #include "ocfs2_ioctl.h" /* For struct ocfs2_blockcheck_stats */ #include "blockcheck.h" #include "reservations.h" #include "filecheck.h" /* Caching of metadata buffers */ /* Most user visible OCFS2 inodes will have very few pieces of * metadata, but larger files (including bitmaps, etc) must be taken * into account when designing an access scheme. We allow a small * amount of inlined blocks to be stored on an array and grow the * structure into a rb tree when necessary. */ #define OCFS2_CACHE_INFO_MAX_ARRAY … /* Flags for ocfs2_caching_info */ enum ocfs2_caching_info_flags { … }; struct ocfs2_caching_operations; struct ocfs2_caching_info { … }; /* * Need this prototype here instead of in uptodate.h because journal.h * uses it. */ struct super_block *ocfs2_metadata_cache_get_super(struct ocfs2_caching_info *ci); /* this limits us to 256 nodes * if we need more, we can do a kmalloc for the map */ #define OCFS2_NODE_MAP_MAX_NODES … struct ocfs2_node_map { … }; enum ocfs2_ast_action { … }; /* actions for an unlockast function to take. */ enum ocfs2_unlock_action { … }; /* ocfs2_lock_res->l_flags flags. */ #define OCFS2_LOCK_ATTACHED … #define OCFS2_LOCK_BUSY … #define OCFS2_LOCK_BLOCKED … #define OCFS2_LOCK_LOCAL … #define OCFS2_LOCK_NEEDS_REFRESH … #define OCFS2_LOCK_REFRESHING … #define OCFS2_LOCK_INITIALIZED … #define OCFS2_LOCK_FREEING … #define OCFS2_LOCK_QUEUED … #define OCFS2_LOCK_NOCACHE … #define OCFS2_LOCK_PENDING … #define OCFS2_LOCK_UPCONVERT_FINISHING … #define OCFS2_LOCK_NONBLOCK_FINISHED … struct ocfs2_lock_res_ops; ocfs2_lock_callback; #ifdef CONFIG_OCFS2_FS_STATS struct ocfs2_lock_stats { … }; #endif struct ocfs2_lock_res { … }; enum ocfs2_orphan_reco_type { … }; enum ocfs2_orphan_scan_state { … }; struct ocfs2_orphan_scan { … }; struct ocfs2_dlm_debug { … }; enum ocfs2_vol_state { … }; struct ocfs2_alloc_stats { … }; enum ocfs2_local_alloc_state { … }; enum ocfs2_mount_options { … }; #define OCFS2_OSB_SOFT_RO … #define OCFS2_OSB_HARD_RO … #define OCFS2_OSB_ERROR_FS … #define OCFS2_DEFAULT_ATIME_QUANTUM … struct ocfs2_triggers { … }; enum ocfs2_journal_trigger_type { … }; #define OCFS2_JOURNAL_TRIGGER_COUNT … void ocfs2_initialize_journal_triggers(struct super_block *sb, struct ocfs2_triggers triggers[]); struct ocfs2_journal; struct ocfs2_slot_info; struct ocfs2_recovery_map; struct ocfs2_replay_map; struct ocfs2_quota_recovery; struct ocfs2_super { … }; #define OCFS2_SB(sb) … /* Useful typedef for passing around journal access functions */ ocfs2_journal_access_func; static inline int ocfs2_should_order_data(struct inode *inode) { … } static inline int ocfs2_sparse_alloc(struct ocfs2_super *osb) { … } static inline int ocfs2_writes_unwritten_extents(struct ocfs2_super *osb) { … } static inline int ocfs2_supports_append_dio(struct ocfs2_super *osb) { … } static inline int ocfs2_supports_inline_data(struct ocfs2_super *osb) { … } static inline int ocfs2_supports_xattr(struct ocfs2_super *osb) { … } static inline int ocfs2_meta_ecc(struct ocfs2_super *osb) { … } static inline int ocfs2_supports_indexed_dirs(struct ocfs2_super *osb) { … } static inline int ocfs2_supports_discontig_bg(struct ocfs2_super *osb) { … } static inline unsigned int ocfs2_link_max(struct ocfs2_super *osb) { … } static inline unsigned int ocfs2_read_links_count(struct ocfs2_dinode *di) { … } static inline void ocfs2_set_links_count(struct ocfs2_dinode *di, u32 nlink) { … } static inline void ocfs2_add_links_count(struct ocfs2_dinode *di, int n) { … } static inline int ocfs2_refcount_tree(struct ocfs2_super *osb) { … } /* set / clear functions because cluster events can make these happen * in parallel so we want the transitions to be atomic. this also * means that any future flags osb_flags must be protected by spinlock * too! */ static inline void ocfs2_set_osb_flag(struct ocfs2_super *osb, unsigned long flag) { … } static inline void ocfs2_set_ro_flag(struct ocfs2_super *osb, int hard) { … } static inline int ocfs2_is_hard_readonly(struct ocfs2_super *osb) { … } static inline int ocfs2_is_soft_readonly(struct ocfs2_super *osb) { … } static inline int ocfs2_clusterinfo_valid(struct ocfs2_super *osb) { … } static inline int ocfs2_userspace_stack(struct ocfs2_super *osb) { … } static inline int ocfs2_o2cb_stack(struct ocfs2_super *osb) { … } static inline int ocfs2_cluster_o2cb_global_heartbeat(struct ocfs2_super *osb) { … } static inline int ocfs2_mount_local(struct ocfs2_super *osb) { … } static inline int ocfs2_uses_extended_slot_map(struct ocfs2_super *osb) { … } #define OCFS2_IS_VALID_DINODE(ptr) … #define OCFS2_IS_VALID_EXTENT_BLOCK(ptr) … #define OCFS2_IS_VALID_GROUP_DESC(ptr) … #define OCFS2_IS_VALID_XATTR_BLOCK(ptr) … #define OCFS2_IS_VALID_DIR_TRAILER(ptr) … #define OCFS2_IS_VALID_DX_ROOT(ptr) … #define OCFS2_IS_VALID_DX_LEAF(ptr) … #define OCFS2_IS_VALID_REFCOUNT_BLOCK(ptr) … static inline unsigned long ino_from_blkno(struct super_block *sb, u64 blkno) { … } static inline u64 ocfs2_clusters_to_blocks(struct super_block *sb, u32 clusters) { … } static inline u32 ocfs2_clusters_for_blocks(struct super_block *sb, u64 blocks) { … } static inline u32 ocfs2_blocks_to_clusters(struct super_block *sb, u64 blocks) { … } static inline unsigned int ocfs2_clusters_for_bytes(struct super_block *sb, u64 bytes) { … } static inline unsigned int ocfs2_bytes_to_clusters(struct super_block *sb, u64 bytes) { … } static inline u64 ocfs2_blocks_for_bytes(struct super_block *sb, u64 bytes) { … } static inline u64 ocfs2_clusters_to_bytes(struct super_block *sb, u32 clusters) { … } static inline u64 ocfs2_block_to_cluster_start(struct super_block *sb, u64 blocks) { … } static inline u64 ocfs2_align_bytes_to_clusters(struct super_block *sb, u64 bytes) { … } static inline u64 ocfs2_align_bytes_to_blocks(struct super_block *sb, u64 bytes) { … } static inline unsigned long ocfs2_align_bytes_to_sectors(u64 bytes) { … } static inline unsigned int ocfs2_page_index_to_clusters(struct super_block *sb, unsigned long pg_index) { … } /* * Find the 1st page index which covers the given clusters. */ static inline pgoff_t ocfs2_align_clusters_to_page_index(struct super_block *sb, u32 clusters) { … } static inline unsigned int ocfs2_pages_per_cluster(struct super_block *sb) { … } static inline unsigned int ocfs2_megabytes_to_clusters(struct super_block *sb, unsigned int megs) { … } static inline unsigned int ocfs2_clusters_to_megabytes(struct super_block *sb, unsigned int clusters) { … } static inline void _ocfs2_set_bit(unsigned int bit, unsigned long *bitmap) { … } #define ocfs2_set_bit(bit, addr) … static inline void _ocfs2_clear_bit(unsigned int bit, unsigned long *bitmap) { … } #define ocfs2_clear_bit(bit, addr) … #define ocfs2_test_bit … #define ocfs2_find_next_zero_bit … #define ocfs2_find_next_bit … static inline void *correct_addr_and_bit_unaligned(int *bit, void *addr) { … } static inline void ocfs2_set_bit_unaligned(int bit, void *bitmap) { … } static inline void ocfs2_clear_bit_unaligned(int bit, void *bitmap) { … } static inline int ocfs2_test_bit_unaligned(int bit, void *bitmap) { … } static inline int ocfs2_find_next_zero_bit_unaligned(void *bitmap, int max, int start) { … } #endif /* OCFS2_H */
Codebase Browser
linux