| /* |
| * fs/f2fs/f2fs.h |
| * |
| * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com/ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #ifndef _LINUX_F2FS_H |
| #define _LINUX_F2FS_H |
| |
| #include <linux/types.h> |
| #include <linux/page-flags.h> |
| #include <linux/buffer_head.h> |
| #include <linux/slab.h> |
| #include <linux/crc32.h> |
| #include <linux/magic.h> |
| #include <linux/kobject.h> |
| #include <linux/sched.h> |
| #include <linux/vmalloc.h> |
| #include <linux/bio.h> |
| #include <linux/blkdev.h> |
| #include <linux/fscrypto.h> |
| #include <crypto/hash.h> |
| |
| #ifdef CONFIG_F2FS_CHECK_FS |
| #define f2fs_bug_on(sbi, condition) BUG_ON(condition) |
| #else |
| #define f2fs_bug_on(sbi, condition) \ |
| do { \ |
| if (unlikely(condition)) { \ |
| WARN_ON(1); \ |
| set_sbi_flag(sbi, SBI_NEED_FSCK); \ |
| } \ |
| } while (0) |
| #endif |
| |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| enum { |
| FAULT_KMALLOC, |
| FAULT_PAGE_ALLOC, |
| FAULT_ALLOC_NID, |
| FAULT_ORPHAN, |
| FAULT_BLOCK, |
| FAULT_DIR_DEPTH, |
| FAULT_EVICT_INODE, |
| FAULT_IO, |
| FAULT_CHECKPOINT, |
| FAULT_MAX, |
| }; |
| |
| struct f2fs_fault_info { |
| atomic_t inject_ops; |
| unsigned int inject_rate; |
| unsigned int inject_type; |
| }; |
| |
| extern char *fault_name[FAULT_MAX]; |
| #define IS_FAULT_SET(fi, type) (fi->inject_type & (1 << (type))) |
| #endif |
| |
| /* |
| * For mount options |
| */ |
| #define F2FS_MOUNT_BG_GC 0x00000001 |
| #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 |
| #define F2FS_MOUNT_DISCARD 0x00000004 |
| #define F2FS_MOUNT_NOHEAP 0x00000008 |
| #define F2FS_MOUNT_XATTR_USER 0x00000010 |
| #define F2FS_MOUNT_POSIX_ACL 0x00000020 |
| #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 |
| #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
| #define F2FS_MOUNT_INLINE_DATA 0x00000100 |
| #define F2FS_MOUNT_INLINE_DENTRY 0x00000200 |
| #define F2FS_MOUNT_FLUSH_MERGE 0x00000400 |
| #define F2FS_MOUNT_NOBARRIER 0x00000800 |
| #define F2FS_MOUNT_FASTBOOT 0x00001000 |
| #define F2FS_MOUNT_EXTENT_CACHE 0x00002000 |
| #define F2FS_MOUNT_FORCE_FG_GC 0x00004000 |
| #define F2FS_MOUNT_DATA_FLUSH 0x00008000 |
| #define F2FS_MOUNT_FAULT_INJECTION 0x00010000 |
| #define F2FS_MOUNT_ADAPTIVE 0x00020000 |
| #define F2FS_MOUNT_LFS 0x00040000 |
| |
| #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) |
| #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) |
| #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) |
| |
| #define ver_after(a, b) (typecheck(unsigned long long, a) && \ |
| typecheck(unsigned long long, b) && \ |
| ((long long)((a) - (b)) > 0)) |
| |
| typedef u32 block_t; /* |
| * should not change u32, since it is the on-disk block |
| * address format, __le32. |
| */ |
| typedef u32 nid_t; |
| |
| struct f2fs_mount_info { |
| unsigned int opt; |
| }; |
| |
| #define F2FS_FEATURE_ENCRYPT 0x0001 |
| #define F2FS_FEATURE_HMSMR 0x0002 |
| |
| #define F2FS_HAS_FEATURE(sb, mask) \ |
| ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0) |
| #define F2FS_SET_FEATURE(sb, mask) \ |
| F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask) |
| #define F2FS_CLEAR_FEATURE(sb, mask) \ |
| F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask) |
| |
| /* |
| * For checkpoint manager |
| */ |
| enum { |
| NAT_BITMAP, |
| SIT_BITMAP |
| }; |
| |
| enum { |
| CP_UMOUNT, |
| CP_FASTBOOT, |
| CP_SYNC, |
| CP_RECOVERY, |
| CP_DISCARD, |
| }; |
| |
| #define DEF_BATCHED_TRIM_SECTIONS 2 |
| #define BATCHED_TRIM_SEGMENTS(sbi) \ |
| (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec) |
| #define BATCHED_TRIM_BLOCKS(sbi) \ |
| (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) |
| #define DEF_CP_INTERVAL 60 /* 60 secs */ |
| #define DEF_IDLE_INTERVAL 5 /* 5 secs */ |
| |
| struct cp_control { |
| int reason; |
| __u64 trim_start; |
| __u64 trim_end; |
| __u64 trim_minlen; |
| __u64 trimmed; |
| }; |
| |
| /* |
| * indicate meta/data type |
| */ |
| enum { |
| META_CP, |
| META_NAT, |
| META_SIT, |
| META_SSA, |
| META_POR, |
| DATA_GENERIC, |
| META_GENERIC, |
| }; |
| |
| /* for the list of ino */ |
| enum { |
| ORPHAN_INO, /* for orphan ino list */ |
| APPEND_INO, /* for append ino list */ |
| UPDATE_INO, /* for update ino list */ |
| MAX_INO_ENTRY, /* max. list */ |
| }; |
| |
| struct ino_entry { |
| struct list_head list; /* list head */ |
| nid_t ino; /* inode number */ |
| }; |
| |
| /* for the list of inodes to be GCed */ |
| struct inode_entry { |
| struct list_head list; /* list head */ |
| struct inode *inode; /* vfs inode pointer */ |
| }; |
| |
| /* for the list of blockaddresses to be discarded */ |
| struct discard_entry { |
| struct list_head list; /* list head */ |
| block_t blkaddr; /* block address to be discarded */ |
| int len; /* # of consecutive blocks of the discard */ |
| }; |
| |
| struct bio_entry { |
| struct list_head list; |
| struct bio *bio; |
| struct completion event; |
| int error; |
| }; |
| |
| /* for the list of fsync inodes, used only during recovery */ |
| struct fsync_inode_entry { |
| struct list_head list; /* list head */ |
| struct inode *inode; /* vfs inode pointer */ |
| block_t blkaddr; /* block address locating the last fsync */ |
| block_t last_dentry; /* block address locating the last dentry */ |
| }; |
| |
| #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats)) |
| #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits)) |
| |
| #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne) |
| #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid) |
| #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se) |
| #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno) |
| |
| #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl)) |
| #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl)) |
| |
| static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i) |
| { |
| int before = nats_in_cursum(journal); |
| journal->n_nats = cpu_to_le16(before + i); |
| return before; |
| } |
| |
| static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i) |
| { |
| int before = sits_in_cursum(journal); |
| journal->n_sits = cpu_to_le16(before + i); |
| return before; |
| } |
| |
| static inline bool __has_cursum_space(struct f2fs_journal *journal, |
| int size, int type) |
| { |
| if (type == NAT_JOURNAL) |
| return size <= MAX_NAT_JENTRIES(journal); |
| return size <= MAX_SIT_JENTRIES(journal); |
| } |
| |
| /* |
| * ioctl commands |
| */ |
| #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS |
| #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS |
| #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION |
| |
| #define F2FS_IOCTL_MAGIC 0xf5 |
| #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) |
| #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) |
| #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) |
| #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) |
| #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) |
| #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6) |
| #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7) |
| #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8) |
| #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \ |
| struct f2fs_move_range) |
| |
| #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY |
| #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY |
| #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT |
| |
| /* |
| * should be same as XFS_IOC_GOINGDOWN. |
| * Flags for going down operation used by FS_IOC_GOINGDOWN |
| */ |
| #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ |
| #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ |
| #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ |
| #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ |
| #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */ |
| |
| #if defined(__KERNEL__) && defined(CONFIG_COMPAT) |
| /* |
| * ioctl commands in 32 bit emulation |
| */ |
| #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
| #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS |
| #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION |
| #endif |
| |
| struct f2fs_defragment { |
| u64 start; |
| u64 len; |
| }; |
| |
| struct f2fs_move_range { |
| u32 dst_fd; /* destination fd */ |
| u64 pos_in; /* start position in src_fd */ |
| u64 pos_out; /* start position in dst_fd */ |
| u64 len; /* size to move */ |
| }; |
| |
| /* |
| * For INODE and NODE manager |
| */ |
| /* for directory operations */ |
| struct f2fs_dentry_ptr { |
| struct inode *inode; |
| const void *bitmap; |
| struct f2fs_dir_entry *dentry; |
| __u8 (*filename)[F2FS_SLOT_LEN]; |
| int max; |
| }; |
| |
| static inline void make_dentry_ptr(struct inode *inode, |
| struct f2fs_dentry_ptr *d, void *src, int type) |
| { |
| d->inode = inode; |
| |
| if (type == 1) { |
| struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src; |
| d->max = NR_DENTRY_IN_BLOCK; |
| d->bitmap = &t->dentry_bitmap; |
| d->dentry = t->dentry; |
| d->filename = t->filename; |
| } else { |
| struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src; |
| d->max = NR_INLINE_DENTRY; |
| d->bitmap = &t->dentry_bitmap; |
| d->dentry = t->dentry; |
| d->filename = t->filename; |
| } |
| } |
| |
| /* |
| * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 |
| * as its node offset to distinguish from index node blocks. |
| * But some bits are used to mark the node block. |
| */ |
| #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ |
| >> OFFSET_BIT_SHIFT) |
| enum { |
| ALLOC_NODE, /* allocate a new node page if needed */ |
| LOOKUP_NODE, /* look up a node without readahead */ |
| LOOKUP_NODE_RA, /* |
| * look up a node with readahead called |
| * by get_data_block. |
| */ |
| }; |
| |
| #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */ |
| |
| #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
| |
| /* vector size for gang look-up from extent cache that consists of radix tree */ |
| #define EXT_TREE_VEC_SIZE 64 |
| |
| /* for in-memory extent cache entry */ |
| #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ |
| |
| /* number of extent info in extent cache we try to shrink */ |
| #define EXTENT_CACHE_SHRINK_NUMBER 128 |
| |
| struct extent_info { |
| unsigned int fofs; /* start offset in a file */ |
| u32 blk; /* start block address of the extent */ |
| unsigned int len; /* length of the extent */ |
| }; |
| |
| struct extent_node { |
| struct rb_node rb_node; /* rb node located in rb-tree */ |
| struct list_head list; /* node in global extent list of sbi */ |
| struct extent_info ei; /* extent info */ |
| struct extent_tree *et; /* extent tree pointer */ |
| }; |
| |
| struct extent_tree { |
| nid_t ino; /* inode number */ |
| struct rb_root root; /* root of extent info rb-tree */ |
| struct extent_node *cached_en; /* recently accessed extent node */ |
| struct extent_info largest; /* largested extent info */ |
| struct list_head list; /* to be used by sbi->zombie_list */ |
| rwlock_t lock; /* protect extent info rb-tree */ |
| atomic_t node_cnt; /* # of extent node in rb-tree*/ |
| }; |
| |
| /* |
| * This structure is taken from ext4_map_blocks. |
| * |
| * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks(). |
| */ |
| #define F2FS_MAP_NEW (1 << BH_New) |
| #define F2FS_MAP_MAPPED (1 << BH_Mapped) |
| #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten) |
| #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\ |
| F2FS_MAP_UNWRITTEN) |
| |
| struct f2fs_map_blocks { |
| block_t m_pblk; |
| block_t m_lblk; |
| unsigned int m_len; |
| unsigned int m_flags; |
| pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ |
| }; |
| |
| /* for flag in get_data_block */ |
| #define F2FS_GET_BLOCK_READ 0 |
| #define F2FS_GET_BLOCK_DIO 1 |
| #define F2FS_GET_BLOCK_FIEMAP 2 |
| #define F2FS_GET_BLOCK_BMAP 3 |
| #define F2FS_GET_BLOCK_PRE_DIO 4 |
| #define F2FS_GET_BLOCK_PRE_AIO 5 |
| |
| /* |
| * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. |
| */ |
| #define FADVISE_COLD_BIT 0x01 |
| #define FADVISE_LOST_PINO_BIT 0x02 |
| #define FADVISE_ENCRYPT_BIT 0x04 |
| #define FADVISE_ENC_NAME_BIT 0x08 |
| |
| #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) |
| #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) |
| #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) |
| #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) |
| #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) |
| #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) |
| #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT) |
| #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT) |
| #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT) |
| #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT) |
| #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT) |
| |
| #define DEF_DIR_LEVEL 0 |
| |
| struct f2fs_inode_info { |
| struct inode vfs_inode; /* serve a vfs inode */ |
| unsigned long i_flags; /* keep an inode flags for ioctl */ |
| unsigned char i_advise; /* use to give file attribute hints */ |
| unsigned char i_dir_level; /* use for dentry level for large dir */ |
| unsigned int i_current_depth; /* use only in directory structure */ |
| unsigned int i_pino; /* parent inode number */ |
| umode_t i_acl_mode; /* keep file acl mode temporarily */ |
| |
| /* Use below internally in f2fs*/ |
| unsigned long flags; /* use to pass per-file flags */ |
| struct rw_semaphore i_sem; /* protect fi info */ |
| atomic_t dirty_pages; /* # of dirty pages */ |
| f2fs_hash_t chash; /* hash value of given file name */ |
| unsigned int clevel; /* maximum level of given file name */ |
| struct task_struct *task; /* lookup and create consistency */ |
| nid_t i_xattr_nid; /* node id that contains xattrs */ |
| unsigned long long xattr_ver; /* cp version of xattr modification */ |
| loff_t last_disk_size; /* lastly written file size */ |
| |
| struct list_head dirty_list; /* dirty list for dirs and files */ |
| struct list_head gdirty_list; /* linked in global dirty list */ |
| struct list_head inmem_pages; /* inmemory pages managed by f2fs */ |
| struct mutex inmem_lock; /* lock for inmemory pages */ |
| struct extent_tree *extent_tree; /* cached extent_tree entry */ |
| struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */ |
| }; |
| |
| static inline void get_extent_info(struct extent_info *ext, |
| struct f2fs_extent *i_ext) |
| { |
| ext->fofs = le32_to_cpu(i_ext->fofs); |
| ext->blk = le32_to_cpu(i_ext->blk); |
| ext->len = le32_to_cpu(i_ext->len); |
| } |
| |
| static inline void set_raw_extent(struct extent_info *ext, |
| struct f2fs_extent *i_ext) |
| { |
| i_ext->fofs = cpu_to_le32(ext->fofs); |
| i_ext->blk = cpu_to_le32(ext->blk); |
| i_ext->len = cpu_to_le32(ext->len); |
| } |
| |
| static inline void set_extent_info(struct extent_info *ei, unsigned int fofs, |
| u32 blk, unsigned int len) |
| { |
| ei->fofs = fofs; |
| ei->blk = blk; |
| ei->len = len; |
| } |
| |
| static inline bool __is_extent_same(struct extent_info *ei1, |
| struct extent_info *ei2) |
| { |
| return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk && |
| ei1->len == ei2->len); |
| } |
| |
| static inline bool __is_extent_mergeable(struct extent_info *back, |
| struct extent_info *front) |
| { |
| return (back->fofs + back->len == front->fofs && |
| back->blk + back->len == front->blk); |
| } |
| |
| static inline bool __is_back_mergeable(struct extent_info *cur, |
| struct extent_info *back) |
| { |
| return __is_extent_mergeable(back, cur); |
| } |
| |
| static inline bool __is_front_mergeable(struct extent_info *cur, |
| struct extent_info *front) |
| { |
| return __is_extent_mergeable(cur, front); |
| } |
| |
| extern void f2fs_mark_inode_dirty_sync(struct inode *); |
| static inline void __try_update_largest_extent(struct inode *inode, |
| struct extent_tree *et, struct extent_node *en) |
| { |
| if (en->ei.len > et->largest.len) { |
| et->largest = en->ei; |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| } |
| |
| struct f2fs_nm_info { |
| block_t nat_blkaddr; /* base disk address of NAT */ |
| nid_t max_nid; /* maximum possible node ids */ |
| nid_t available_nids; /* maximum available node ids */ |
| nid_t next_scan_nid; /* the next nid to be scanned */ |
| unsigned int ram_thresh; /* control the memory footprint */ |
| unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */ |
| unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */ |
| |
| /* NAT cache management */ |
| struct radix_tree_root nat_root;/* root of the nat entry cache */ |
| struct radix_tree_root nat_set_root;/* root of the nat set cache */ |
| struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ |
| struct list_head nat_entries; /* cached nat entry list (clean) */ |
| unsigned int nat_cnt; /* the # of cached nat entries */ |
| unsigned int dirty_nat_cnt; /* total num of nat entries in set */ |
| |
| /* free node ids management */ |
| struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
| struct list_head free_nid_list; /* a list for free nids */ |
| spinlock_t free_nid_list_lock; /* protect free nid list */ |
| unsigned int fcnt; /* the number of free node id */ |
| struct mutex build_lock; /* lock for build free nids */ |
| |
| /* for checkpoint */ |
| char *nat_bitmap; /* NAT bitmap pointer */ |
| int bitmap_size; /* bitmap size */ |
| }; |
| |
| /* |
| * this structure is used as one of function parameters. |
| * all the information are dedicated to a given direct node block determined |
| * by the data offset in a file. |
| */ |
| struct dnode_of_data { |
| struct inode *inode; /* vfs inode pointer */ |
| struct page *inode_page; /* its inode page, NULL is possible */ |
| struct page *node_page; /* cached direct node page */ |
| nid_t nid; /* node id of the direct node block */ |
| unsigned int ofs_in_node; /* data offset in the node page */ |
| bool inode_page_locked; /* inode page is locked or not */ |
| bool node_changed; /* is node block changed */ |
| char cur_level; /* level of hole node page */ |
| char max_level; /* level of current page located */ |
| block_t data_blkaddr; /* block address of the node block */ |
| }; |
| |
| static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, |
| struct page *ipage, struct page *npage, nid_t nid) |
| { |
| memset(dn, 0, sizeof(*dn)); |
| dn->inode = inode; |
| dn->inode_page = ipage; |
| dn->node_page = npage; |
| dn->nid = nid; |
| } |
| |
| /* |
| * For SIT manager |
| * |
| * By default, there are 6 active log areas across the whole main area. |
| * When considering hot and cold data separation to reduce cleaning overhead, |
| * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, |
| * respectively. |
| * In the current design, you should not change the numbers intentionally. |
| * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 |
| * logs individually according to the underlying devices. (default: 6) |
| * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for |
| * data and 8 for node logs. |
| */ |
| #define NR_CURSEG_DATA_TYPE (3) |
| #define NR_CURSEG_NODE_TYPE (3) |
| #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) |
| |
| enum { |
| CURSEG_HOT_DATA = 0, /* directory entry blocks */ |
| CURSEG_WARM_DATA, /* data blocks */ |
| CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ |
| CURSEG_HOT_NODE, /* direct node blocks of directory files */ |
| CURSEG_WARM_NODE, /* direct node blocks of normal files */ |
| CURSEG_COLD_NODE, /* indirect node blocks */ |
| NO_CHECK_TYPE, |
| CURSEG_DIRECT_IO, /* to use for the direct IO path */ |
| }; |
| |
| struct flush_cmd { |
| struct completion wait; |
| struct llist_node llnode; |
| int ret; |
| }; |
| |
| struct flush_cmd_control { |
| struct task_struct *f2fs_issue_flush; /* flush thread */ |
| wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ |
| atomic_t submit_flush; /* # of issued flushes */ |
| struct llist_head issue_list; /* list for command issue */ |
| struct llist_node *dispatch_list; /* list for command dispatch */ |
| }; |
| |
| struct f2fs_sm_info { |
| struct sit_info *sit_info; /* whole segment information */ |
| struct free_segmap_info *free_info; /* free segment information */ |
| struct dirty_seglist_info *dirty_info; /* dirty segment information */ |
| struct curseg_info *curseg_array; /* active segment information */ |
| |
| block_t seg0_blkaddr; /* block address of 0'th segment */ |
| block_t main_blkaddr; /* start block address of main area */ |
| block_t ssa_blkaddr; /* start block address of SSA area */ |
| |
| unsigned int segment_count; /* total # of segments */ |
| unsigned int main_segments; /* # of segments in main area */ |
| unsigned int reserved_segments; /* # of reserved segments */ |
| unsigned int ovp_segments; /* # of overprovision segments */ |
| |
| /* a threshold to reclaim prefree segments */ |
| unsigned int rec_prefree_segments; |
| |
| /* for small discard management */ |
| struct list_head discard_list; /* 4KB discard list */ |
| struct list_head wait_list; /* linked with issued discard bio */ |
| int nr_discards; /* # of discards in the list */ |
| int max_discards; /* max. discards to be issued */ |
| |
| /* for batched trimming */ |
| unsigned int trim_sections; /* # of sections to trim */ |
| |
| struct list_head sit_entry_set; /* sit entry set list */ |
| |
| unsigned int ipu_policy; /* in-place-update policy */ |
| unsigned int min_ipu_util; /* in-place-update threshold */ |
| unsigned int min_fsync_blocks; /* threshold for fsync */ |
| |
| /* for flush command control */ |
| struct flush_cmd_control *cmd_control_info; |
| |
| }; |
| |
| /* |
| * For superblock |
| */ |
| /* |
| * COUNT_TYPE for monitoring |
| * |
| * f2fs monitors the number of several block types such as on-writeback, |
| * dirty dentry blocks, dirty node blocks, and dirty meta blocks. |
| */ |
| enum count_type { |
| F2FS_DIRTY_DENTS, |
| F2FS_DIRTY_DATA, |
| F2FS_DIRTY_NODES, |
| F2FS_DIRTY_META, |
| F2FS_INMEM_PAGES, |
| F2FS_DIRTY_IMETA, |
| NR_COUNT_TYPE, |
| }; |
| |
| /* |
| * The below are the page types of bios used in submit_bio(). |
| * The available types are: |
| * DATA User data pages. It operates as async mode. |
| * NODE Node pages. It operates as async mode. |
| * META FS metadata pages such as SIT, NAT, CP. |
| * NR_PAGE_TYPE The number of page types. |
| * META_FLUSH Make sure the previous pages are written |
| * with waiting the bio's completion |
| * ... Only can be used with META. |
| */ |
| #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
| enum page_type { |
| DATA, |
| NODE, |
| META, |
| NR_PAGE_TYPE, |
| META_FLUSH, |
| INMEM, /* the below types are used by tracepoints only. */ |
| INMEM_DROP, |
| INMEM_REVOKE, |
| IPU, |
| OPU, |
| }; |
| |
| struct f2fs_io_info { |
| struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ |
| enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
| int op; /* contains REQ_OP_ */ |
| int op_flags; /* rq_flag_bits */ |
| block_t new_blkaddr; /* new block address to be written */ |
| block_t old_blkaddr; /* old block address before Cow */ |
| struct page *page; /* page to be written */ |
| struct page *encrypted_page; /* encrypted page */ |
| bool is_meta; /* indicate borrow meta inode mapping or not */ |
| }; |
| |
| #define is_read_io(rw) (rw == READ) |
| struct f2fs_bio_info { |
| struct f2fs_sb_info *sbi; /* f2fs superblock */ |
| struct bio *bio; /* bios to merge */ |
| sector_t last_block_in_bio; /* last block number */ |
| struct f2fs_io_info fio; /* store buffered io info. */ |
| struct rw_semaphore io_rwsem; /* blocking op for bio */ |
| }; |
| |
| enum inode_type { |
| DIR_INODE, /* for dirty dir inode */ |
| FILE_INODE, /* for dirty regular/symlink inode */ |
| DIRTY_META, /* for all dirtied inode metadata */ |
| NR_INODE_TYPE, |
| }; |
| |
| /* for inner inode cache management */ |
| struct inode_management { |
| struct radix_tree_root ino_root; /* ino entry array */ |
| spinlock_t ino_lock; /* for ino entry lock */ |
| struct list_head ino_list; /* inode list head */ |
| unsigned long ino_num; /* number of entries */ |
| }; |
| |
| /* For s_flag in struct f2fs_sb_info */ |
| enum { |
| SBI_IS_DIRTY, /* dirty flag for checkpoint */ |
| SBI_IS_CLOSE, /* specify unmounting */ |
| SBI_NEED_FSCK, /* need fsck.f2fs to fix */ |
| SBI_POR_DOING, /* recovery is doing or not */ |
| SBI_NEED_SB_WRITE, /* need to recover superblock */ |
| SBI_NEED_CP, /* need to checkpoint */ |
| }; |
| |
| enum { |
| CP_TIME, |
| REQ_TIME, |
| MAX_TIME, |
| }; |
| |
| #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| #define F2FS_KEY_DESC_PREFIX "f2fs:" |
| #define F2FS_KEY_DESC_PREFIX_SIZE 5 |
| #endif |
| struct f2fs_sb_info { |
| struct super_block *sb; /* pointer to VFS super block */ |
| struct proc_dir_entry *s_proc; /* proc entry */ |
| struct f2fs_super_block *raw_super; /* raw super block pointer */ |
| int valid_super_block; /* valid super block no */ |
| unsigned long s_flag; /* flags for sbi */ |
| |
| #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE]; |
| u8 key_prefix_size; |
| #endif |
| /* for node-related operations */ |
| struct f2fs_nm_info *nm_info; /* node manager */ |
| struct inode *node_inode; /* cache node blocks */ |
| |
| /* for segment-related operations */ |
| struct f2fs_sm_info *sm_info; /* segment manager */ |
| |
| /* for bio operations */ |
| struct f2fs_bio_info read_io; /* for read bios */ |
| struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
| struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */ |
| |
| /* for checkpoint */ |
| struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ |
| int cur_cp_pack; /* remain current cp pack */ |
| spinlock_t cp_lock; /* for flag in ckpt */ |
| struct inode *meta_inode; /* cache meta blocks */ |
| struct mutex cp_mutex; /* checkpoint procedure lock */ |
| struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
| struct rw_semaphore node_write; /* locking node writes */ |
| wait_queue_head_t cp_wait; |
| unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ |
| long interval_time[MAX_TIME]; /* to store thresholds */ |
| |
| struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ |
| |
| /* for orphan inode, use 0'th array */ |
| unsigned int max_orphans; /* max orphan inodes */ |
| |
| /* for inode management */ |
| struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */ |
| spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */ |
| |
| /* for extent tree cache */ |
| struct radix_tree_root extent_tree_root;/* cache extent cache entries */ |
| struct rw_semaphore extent_tree_lock; /* locking extent radix tree */ |
| struct list_head extent_list; /* lru list for shrinker */ |
| spinlock_t extent_lock; /* locking extent lru list */ |
| atomic_t total_ext_tree; /* extent tree count */ |
| struct list_head zombie_list; /* extent zombie tree list */ |
| atomic_t total_zombie_tree; /* extent zombie tree count */ |
| atomic_t total_ext_node; /* extent info count */ |
| |
| /* basic filesystem units */ |
| unsigned int log_sectors_per_block; /* log2 sectors per block */ |
| unsigned int log_blocksize; /* log2 block size */ |
| unsigned int blocksize; /* block size */ |
| unsigned int root_ino_num; /* root inode number*/ |
| unsigned int node_ino_num; /* node inode number*/ |
| unsigned int meta_ino_num; /* meta inode number*/ |
| unsigned int log_blocks_per_seg; /* log2 blocks per segment */ |
| unsigned int blocks_per_seg; /* blocks per segment */ |
| unsigned int segs_per_sec; /* segments per section */ |
| unsigned int secs_per_zone; /* sections per zone */ |
| unsigned int total_sections; /* total section count */ |
| unsigned int total_node_count; /* total node block count */ |
| unsigned int total_valid_node_count; /* valid node block count */ |
| loff_t max_file_blocks; /* max block index of file */ |
| int active_logs; /* # of active logs */ |
| int dir_level; /* directory level */ |
| |
| block_t user_block_count; /* # of user blocks */ |
| block_t total_valid_block_count; /* # of valid blocks */ |
| block_t discard_blks; /* discard command candidats */ |
| block_t last_valid_block_count; /* for recovery */ |
| u32 s_next_generation; /* for NFS support */ |
| atomic_t nr_wb_bios; /* # of writeback bios */ |
| |
| /* # of pages, see count_type */ |
| atomic_t nr_pages[NR_COUNT_TYPE]; |
| /* # of allocated blocks */ |
| struct percpu_counter alloc_valid_block_count; |
| |
| /* valid inode count */ |
| struct percpu_counter total_valid_inode_count; |
| |
| struct f2fs_mount_info mount_opt; /* mount options */ |
| |
| /* for cleaning operations */ |
| struct mutex gc_mutex; /* mutex for GC */ |
| struct f2fs_gc_kthread *gc_thread; /* GC thread */ |
| unsigned int cur_victim_sec; /* current victim section num */ |
| |
| /* threshold for converting bg victims for fg */ |
| u64 fggc_threshold; |
| |
| /* maximum # of trials to find a victim segment for SSR and GC */ |
| unsigned int max_victim_search; |
| |
| /* |
| * for stat information. |
| * one is for the LFS mode, and the other is for the SSR mode. |
| */ |
| #ifdef CONFIG_F2FS_STAT_FS |
| struct f2fs_stat_info *stat_info; /* FS status information */ |
| unsigned int segment_count[2]; /* # of allocated segments */ |
| unsigned int block_count[2]; /* # of allocated blocks */ |
| atomic_t inplace_count; /* # of inplace update */ |
| atomic64_t total_hit_ext; /* # of lookup extent cache */ |
| atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */ |
| atomic64_t read_hit_largest; /* # of hit largest extent node */ |
| atomic64_t read_hit_cached; /* # of hit cached extent node */ |
| atomic_t inline_xattr; /* # of inline_xattr inodes */ |
| atomic_t inline_inode; /* # of inline_data inodes */ |
| atomic_t inline_dir; /* # of inline_dentry inodes */ |
| int bg_gc; /* background gc calls */ |
| unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ |
| #endif |
| unsigned int last_victim[2]; /* last victim segment # */ |
| spinlock_t stat_lock; /* lock for stat operations */ |
| |
| /* For sysfs suppport */ |
| struct kobject s_kobj; |
| struct completion s_kobj_unregister; |
| |
| /* For shrinker support */ |
| struct list_head s_list; |
| struct mutex umount_mutex; |
| unsigned int shrinker_run_no; |
| |
| /* For write statistics */ |
| u64 sectors_written_start; |
| u64 kbytes_written; |
| |
| /* Reference to checksum algorithm driver via cryptoapi */ |
| struct crypto_shash *s_chksum_driver; |
| |
| /* For fault injection */ |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| struct f2fs_fault_info fault_info; |
| #endif |
| }; |
| |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type) |
| { |
| struct f2fs_fault_info *ffi = &sbi->fault_info; |
| |
| if (!ffi->inject_rate) |
| return false; |
| |
| if (!IS_FAULT_SET(ffi, type)) |
| return false; |
| |
| atomic_inc(&ffi->inject_ops); |
| if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) { |
| atomic_set(&ffi->inject_ops, 0); |
| printk("%sF2FS-fs : inject %s in %pF\n", |
| KERN_INFO, |
| fault_name[type], |
| __builtin_return_address(0)); |
| return true; |
| } |
| return false; |
| } |
| #endif |
| |
| /* For write statistics. Suppose sector size is 512 bytes, |
| * and the return value is in kbytes. s is of struct f2fs_sb_info. |
| */ |
| #define BD_PART_WRITTEN(s) \ |
| (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \ |
| s->sectors_written_start) >> 1) |
| |
| static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) |
| { |
| sbi->last_time[type] = jiffies; |
| } |
| |
| static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) |
| { |
| struct timespec ts = {sbi->interval_time[type], 0}; |
| unsigned long interval = timespec_to_jiffies(&ts); |
| |
| return time_after(jiffies, sbi->last_time[type] + interval); |
| } |
| |
| static inline bool is_idle(struct f2fs_sb_info *sbi) |
| { |
| struct block_device *bdev = sbi->sb->s_bdev; |
| struct request_queue *q = bdev_get_queue(bdev); |
| struct request_list *rl = &q->root_rl; |
| |
| if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC]) |
| return 0; |
| |
| return f2fs_time_over(sbi, REQ_TIME); |
| } |
| |
| /* |
| * Inline functions |
| */ |
| static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address, |
| unsigned int length) |
| { |
| SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver); |
| u32 *ctx = (u32 *)shash_desc_ctx(shash); |
| u32 retval; |
| int err; |
| |
| shash->tfm = sbi->s_chksum_driver; |
| shash->flags = 0; |
| *ctx = F2FS_SUPER_MAGIC; |
| |
| err = crypto_shash_update(shash, address, length); |
| BUG_ON(err); |
| |
| retval = *ctx; |
| barrier_data(ctx); |
| return retval; |
| } |
| |
| static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc, |
| void *buf, size_t buf_size) |
| { |
| return f2fs_crc32(sbi, buf, buf_size) == blk_crc; |
| } |
| |
| static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) |
| { |
| return container_of(inode, struct f2fs_inode_info, vfs_inode); |
| } |
| |
| static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) |
| { |
| return sb->s_fs_info; |
| } |
| |
| static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
| { |
| return F2FS_SB(inode->i_sb); |
| } |
| |
| static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) |
| { |
| return F2FS_I_SB(mapping->host); |
| } |
| |
| static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) |
| { |
| return F2FS_M_SB(page->mapping); |
| } |
| |
| static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
| { |
| return (struct f2fs_super_block *)(sbi->raw_super); |
| } |
| |
| static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) |
| { |
| return (struct f2fs_checkpoint *)(sbi->ckpt); |
| } |
| |
| static inline struct f2fs_node *F2FS_NODE(struct page *page) |
| { |
| return (struct f2fs_node *)page_address(page); |
| } |
| |
| static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
| { |
| return &((struct f2fs_node *)page_address(page))->i; |
| } |
| |
| static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
| { |
| return (struct f2fs_nm_info *)(sbi->nm_info); |
| } |
| |
| static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) |
| { |
| return (struct f2fs_sm_info *)(sbi->sm_info); |
| } |
| |
| static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) |
| { |
| return (struct sit_info *)(SM_I(sbi)->sit_info); |
| } |
| |
| static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) |
| { |
| return (struct free_segmap_info *)(SM_I(sbi)->free_info); |
| } |
| |
| static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) |
| { |
| return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); |
| } |
| |
| static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
| { |
| return sbi->meta_inode->i_mapping; |
| } |
| |
| static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
| { |
| return sbi->node_inode->i_mapping; |
| } |
| |
| static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) |
| { |
| return test_bit(type, &sbi->s_flag); |
| } |
| |
| static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
| { |
| set_bit(type, &sbi->s_flag); |
| } |
| |
| static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
| { |
| clear_bit(type, &sbi->s_flag); |
| } |
| |
| static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
| { |
| return le64_to_cpu(cp->checkpoint_ver); |
| } |
| |
| static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| { |
| unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| |
| return ckpt_flags & f; |
| } |
| |
| static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) |
| { |
| return __is_set_ckpt_flags(F2FS_CKPT(sbi), f); |
| } |
| |
| static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| { |
| unsigned int ckpt_flags; |
| |
| ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| ckpt_flags |= f; |
| cp->ckpt_flags = cpu_to_le32(ckpt_flags); |
| } |
| |
| static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) |
| { |
| spin_lock(&sbi->cp_lock); |
| __set_ckpt_flags(F2FS_CKPT(sbi), f); |
| spin_unlock(&sbi->cp_lock); |
| } |
| |
| static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| { |
| unsigned int ckpt_flags; |
| |
| ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| ckpt_flags &= (~f); |
| cp->ckpt_flags = cpu_to_le32(ckpt_flags); |
| } |
| |
| static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f) |
| { |
| spin_lock(&sbi->cp_lock); |
| __clear_ckpt_flags(F2FS_CKPT(sbi), f); |
| spin_unlock(&sbi->cp_lock); |
| } |
| |
| static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi) |
| { |
| struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev); |
| |
| return blk_queue_discard(q); |
| } |
| |
| static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
| { |
| down_read(&sbi->cp_rwsem); |
| } |
| |
| static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
| { |
| up_read(&sbi->cp_rwsem); |
| } |
| |
| static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
| { |
| down_write(&sbi->cp_rwsem); |
| } |
| |
| static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
| { |
| up_write(&sbi->cp_rwsem); |
| } |
| |
| static inline int __get_cp_reason(struct f2fs_sb_info *sbi) |
| { |
| int reason = CP_SYNC; |
| |
| if (test_opt(sbi, FASTBOOT)) |
| reason = CP_FASTBOOT; |
| if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) |
| reason = CP_UMOUNT; |
| return reason; |
| } |
| |
| static inline bool __remain_node_summaries(int reason) |
| { |
| return (reason == CP_UMOUNT || reason == CP_FASTBOOT); |
| } |
| |
| static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) |
| { |
| return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) || |
| is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG)); |
| } |
| |
| /* |
| * Check whether the given nid is within node id range. |
| */ |
| static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
| { |
| if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
| return -EINVAL; |
| if (unlikely(nid >= NM_I(sbi)->max_nid)) |
| return -EINVAL; |
| return 0; |
| } |
| |
| #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 |
| |
| /* |
| * Check whether the inode has blocks or not |
| */ |
| static inline int F2FS_HAS_BLOCKS(struct inode *inode) |
| { |
| if (F2FS_I(inode)->i_xattr_nid) |
| return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
| else |
| return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
| } |
| |
| static inline bool f2fs_has_xattr_block(unsigned int ofs) |
| { |
| return ofs == XATTR_NODE_OFFSET; |
| } |
| |
| static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool); |
| static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, |
| struct inode *inode, blkcnt_t *count) |
| { |
| blkcnt_t diff; |
| |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| if (time_to_inject(sbi, FAULT_BLOCK)) |
| return false; |
| #endif |
| /* |
| * let's increase this in prior to actual block count change in order |
| * for f2fs_sync_file to avoid data races when deciding checkpoint. |
| */ |
| percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); |
| |
| spin_lock(&sbi->stat_lock); |
| sbi->total_valid_block_count += (block_t)(*count); |
| if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) { |
| diff = sbi->total_valid_block_count - sbi->user_block_count; |
| *count -= diff; |
| sbi->total_valid_block_count = sbi->user_block_count; |
| if (!*count) { |
| spin_unlock(&sbi->stat_lock); |
| percpu_counter_sub(&sbi->alloc_valid_block_count, diff); |
| return false; |
| } |
| } |
| spin_unlock(&sbi->stat_lock); |
| |
| f2fs_i_blocks_write(inode, *count, true); |
| return true; |
| } |
| |
| static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
| struct inode *inode, |
| blkcnt_t count) |
| { |
| spin_lock(&sbi->stat_lock); |
| f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
| f2fs_bug_on(sbi, inode->i_blocks < count); |
| sbi->total_valid_block_count -= (block_t)count; |
| spin_unlock(&sbi->stat_lock); |
| f2fs_i_blocks_write(inode, count, false); |
| } |
| |
| static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) |
| { |
| atomic_inc(&sbi->nr_pages[count_type]); |
| |
| if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES) |
| return; |
| |
| set_sbi_flag(sbi, SBI_IS_DIRTY); |
| } |
| |
| static inline void inode_inc_dirty_pages(struct inode *inode) |
| { |
| atomic_inc(&F2FS_I(inode)->dirty_pages); |
| inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? |
| F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); |
| } |
| |
| static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) |
| { |
| atomic_dec(&sbi->nr_pages[count_type]); |
| } |
| |
| static inline void inode_dec_dirty_pages(struct inode *inode) |
| { |
| if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
| !S_ISLNK(inode->i_mode)) |
| return; |
| |
| atomic_dec(&F2FS_I(inode)->dirty_pages); |
| dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? |
| F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); |
| } |
| |
| static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type) |
| { |
| return atomic_read(&sbi->nr_pages[count_type]); |
| } |
| |
| static inline int get_dirty_pages(struct inode *inode) |
| { |
| return atomic_read(&F2FS_I(inode)->dirty_pages); |
| } |
| |
| static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
| { |
| unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; |
| unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >> |
| sbi->log_blocks_per_seg; |
| |
| return segs / sbi->segs_per_sec; |
| } |
| |
| static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
| { |
| return sbi->total_valid_block_count; |
| } |
| |
| static inline block_t discard_blocks(struct f2fs_sb_info *sbi) |
| { |
| return sbi->discard_blks; |
| } |
| |
| static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) |
| { |
| struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| |
| /* return NAT or SIT bitmap */ |
| if (flag == NAT_BITMAP) |
| return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); |
| else if (flag == SIT_BITMAP) |
| return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); |
| |
| return 0; |
| } |
| |
| static inline block_t __cp_payload(struct f2fs_sb_info *sbi) |
| { |
| return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
| } |
| |
| static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) |
| { |
| struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| int offset; |
| |
| if (__cp_payload(sbi) > 0) { |
| if (flag == NAT_BITMAP) |
| return &ckpt->sit_nat_version_bitmap; |
| else |
| return (unsigned char *)ckpt + F2FS_BLKSIZE; |
| } else { |
| offset = (flag == NAT_BITMAP) ? |
| le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
| return &ckpt->sit_nat_version_bitmap + offset; |
| } |
| } |
| |
| static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) |
| { |
| block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
| |
| if (sbi->cur_cp_pack == 2) |
| start_addr += sbi->blocks_per_seg; |
| return start_addr; |
| } |
| |
| static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi) |
| { |
| block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
| |
| if (sbi->cur_cp_pack == 1) |
| start_addr += sbi->blocks_per_seg; |
| return start_addr; |
| } |
| |
| static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi) |
| { |
| sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1; |
| } |
| |
| static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) |
| { |
| return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); |
| } |
| |
| static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, |
| struct inode *inode) |
| { |
| block_t valid_block_count; |
| unsigned int valid_node_count; |
| |
| spin_lock(&sbi->stat_lock); |
| |
| valid_block_count = sbi->total_valid_block_count + 1; |
| if (unlikely(valid_block_count > sbi->user_block_count)) { |
| spin_unlock(&sbi->stat_lock); |
| return false; |
| } |
| |
| valid_node_count = sbi->total_valid_node_count + 1; |
| if (unlikely(valid_node_count > sbi->total_node_count)) { |
| spin_unlock(&sbi->stat_lock); |
| return false; |
| } |
| |
| if (inode) |
| f2fs_i_blocks_write(inode, 1, true); |
| |
| sbi->total_valid_node_count++; |
| sbi->total_valid_block_count++; |
| spin_unlock(&sbi->stat_lock); |
| |
| percpu_counter_inc(&sbi->alloc_valid_block_count); |
| return true; |
| } |
| |
| static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, |
| struct inode *inode) |
| { |
| spin_lock(&sbi->stat_lock); |
| |
| f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
| f2fs_bug_on(sbi, !sbi->total_valid_node_count); |
| f2fs_bug_on(sbi, !inode->i_blocks); |
| |
| f2fs_i_blocks_write(inode, 1, false); |
| sbi->total_valid_node_count--; |
| sbi->total_valid_block_count--; |
| |
| spin_unlock(&sbi->stat_lock); |
| } |
| |
| static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) |
| { |
| return sbi->total_valid_node_count; |
| } |
| |
| static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) |
| { |
| percpu_counter_inc(&sbi->total_valid_inode_count); |
| } |
| |
| static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
| { |
| percpu_counter_dec(&sbi->total_valid_inode_count); |
| } |
| |
| static inline s64 valid_inode_count(struct f2fs_sb_info *sbi) |
| { |
| return percpu_counter_sum_positive(&sbi->total_valid_inode_count); |
| } |
| |
| static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, |
| pgoff_t index, bool for_write) |
| { |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| struct page *page = find_lock_page(mapping, index); |
| if (page) |
| return page; |
| |
| if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) |
| return NULL; |
| #endif |
| if (!for_write) |
| return grab_cache_page(mapping, index); |
| return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); |
| } |
| |
| static inline void f2fs_copy_page(struct page *src, struct page *dst) |
| { |
| char *src_kaddr = kmap(src); |
| char *dst_kaddr = kmap(dst); |
| |
| memcpy(dst_kaddr, src_kaddr, PAGE_SIZE); |
| kunmap(dst); |
| kunmap(src); |
| } |
| |
| static inline void f2fs_put_page(struct page *page, int unlock) |
| { |
| if (!page) |
| return; |
| |
| if (unlock) { |
| f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
| unlock_page(page); |
| } |
| put_page(page); |
| } |
| |
| static inline void f2fs_put_dnode(struct dnode_of_data *dn) |
| { |
| if (dn->node_page) |
| f2fs_put_page(dn->node_page, 1); |
| if (dn->inode_page && dn->node_page != dn->inode_page) |
| f2fs_put_page(dn->inode_page, 0); |
| dn->node_page = NULL; |
| dn->inode_page = NULL; |
| } |
| |
| static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, |
| size_t size) |
| { |
| return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
| } |
| |
| static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
| gfp_t flags) |
| { |
| void *entry; |
| |
| entry = kmem_cache_alloc(cachep, flags); |
| if (!entry) |
| entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL); |
| return entry; |
| } |
| |
| static inline struct bio *f2fs_bio_alloc(int npages) |
| { |
| struct bio *bio; |
| |
| /* No failure on bio allocation */ |
| bio = bio_alloc(GFP_NOIO, npages); |
| if (!bio) |
| bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); |
| return bio; |
| } |
| |
| static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, |
| unsigned long index, void *item) |
| { |
| while (radix_tree_insert(root, index, item)) |
| cond_resched(); |
| } |
| |
| #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
| |
| static inline bool IS_INODE(struct page *page) |
| { |
| struct f2fs_node *p = F2FS_NODE(page); |
| return RAW_IS_INODE(p); |
| } |
| |
| static inline __le32 *blkaddr_in_node(struct f2fs_node *node) |
| { |
| return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; |
| } |
| |
| static inline block_t datablock_addr(struct page *node_page, |
| unsigned int offset) |
| { |
| struct f2fs_node *raw_node; |
| __le32 *addr_array; |
| raw_node = F2FS_NODE(node_page); |
| addr_array = blkaddr_in_node(raw_node); |
| return le32_to_cpu(addr_array[offset]); |
| } |
| |
| static inline int f2fs_test_bit(unsigned int nr, char *addr) |
| { |
| int mask; |
| |
| addr += (nr >> 3); |
| mask = 1 << (7 - (nr & 0x07)); |
| return mask & *addr; |
| } |
| |
| static inline void f2fs_set_bit(unsigned int nr, char *addr) |
| { |
| int mask; |
| |
| addr += (nr >> 3); |
| mask = 1 << (7 - (nr & 0x07)); |
| *addr |= mask; |
| } |
| |
| static inline void f2fs_clear_bit(unsigned int nr, char *addr) |
| { |
| int mask; |
| |
| addr += (nr >> 3); |
| mask = 1 << (7 - (nr & 0x07)); |
| *addr &= ~mask; |
| } |
| |
| static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) |
| { |
| int mask; |
| int ret; |
| |
| addr += (nr >> 3); |
| mask = 1 << (7 - (nr & 0x07)); |
| ret = mask & *addr; |
| *addr |= mask; |
| return ret; |
| } |
| |
| static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) |
| { |
| int mask; |
| int ret; |
| |
| addr += (nr >> 3); |
| mask = 1 << (7 - (nr & 0x07)); |
| ret = mask & *addr; |
| *addr &= ~mask; |
| return ret; |
| } |
| |
| static inline void f2fs_change_bit(unsigned int nr, char *addr) |
| { |
| int mask; |
| |
| addr += (nr >> 3); |
| mask = 1 << (7 - (nr & 0x07)); |
| *addr ^= mask; |
| } |
| |
| /* used for f2fs_inode_info->flags */ |
| enum { |
| FI_NEW_INODE, /* indicate newly allocated inode */ |
| FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
| FI_AUTO_RECOVER, /* indicate inode is recoverable */ |
| FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
| FI_INC_LINK, /* need to increment i_nlink */ |
| FI_ACL_MODE, /* indicate acl mode */ |
| FI_NO_ALLOC, /* should not allocate any blocks */ |
| FI_FREE_NID, /* free allocated nide */ |
| FI_NO_EXTENT, /* not to use the extent cache */ |
| FI_INLINE_XATTR, /* used for inline xattr */ |
| FI_INLINE_DATA, /* used for inline data*/ |
| FI_INLINE_DENTRY, /* used for inline dentry */ |
| FI_APPEND_WRITE, /* inode has appended data */ |
| FI_UPDATE_WRITE, /* inode has in-place-update data */ |
| FI_NEED_IPU, /* used for ipu per file */ |
| FI_ATOMIC_FILE, /* indicate atomic file */ |
| FI_VOLATILE_FILE, /* indicate volatile file */ |
| FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ |
| FI_DROP_CACHE, /* drop dirty page cache */ |
| FI_DATA_EXIST, /* indicate data exists */ |
| FI_INLINE_DOTS, /* indicate inline dot dentries */ |
| FI_DO_DEFRAG, /* indicate defragment is running */ |
| FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ |
| }; |
| |
| static inline void __mark_inode_dirty_flag(struct inode *inode, |
| int flag, bool set) |
| { |
| switch (flag) { |
| case FI_INLINE_XATTR: |
| case FI_INLINE_DATA: |
| case FI_INLINE_DENTRY: |
| if (set) |
| return; |
| case FI_DATA_EXIST: |
| case FI_INLINE_DOTS: |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| } |
| |
| static inline void set_inode_flag(struct inode *inode, int flag) |
| { |
| if (!test_bit(flag, &F2FS_I(inode)->flags)) |
| set_bit(flag, &F2FS_I(inode)->flags); |
| __mark_inode_dirty_flag(inode, flag, true); |
| } |
| |
| static inline int is_inode_flag_set(struct inode *inode, int flag) |
| { |
| return test_bit(flag, &F2FS_I(inode)->flags); |
| } |
| |
| static inline void clear_inode_flag(struct inode *inode, int flag) |
| { |
| if (test_bit(flag, &F2FS_I(inode)->flags)) |
| clear_bit(flag, &F2FS_I(inode)->flags); |
| __mark_inode_dirty_flag(inode, flag, false); |
| } |
| |
| static inline void set_acl_inode(struct inode *inode, umode_t mode) |
| { |
| F2FS_I(inode)->i_acl_mode = mode; |
| set_inode_flag(inode, FI_ACL_MODE); |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline void f2fs_i_links_write(struct inode *inode, bool inc) |
| { |
| if (inc) |
| inc_nlink(inode); |
| else |
| drop_nlink(inode); |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline void f2fs_i_blocks_write(struct inode *inode, |
| blkcnt_t diff, bool add) |
| { |
| bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); |
| bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); |
| |
| inode->i_blocks = add ? inode->i_blocks + diff : |
| inode->i_blocks - diff; |
| f2fs_mark_inode_dirty_sync(inode); |
| if (clean || recover) |
| set_inode_flag(inode, FI_AUTO_RECOVER); |
| } |
| |
| static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) |
| { |
| bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); |
| bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); |
| |
| if (i_size_read(inode) == i_size) |
| return; |
| |
| i_size_write(inode, i_size); |
| f2fs_mark_inode_dirty_sync(inode); |
| if (clean || recover) |
| set_inode_flag(inode, FI_AUTO_RECOVER); |
| } |
| |
| static inline bool f2fs_skip_inode_update(struct inode *inode) |
| { |
| if (!is_inode_flag_set(inode, FI_AUTO_RECOVER)) |
| return false; |
| return F2FS_I(inode)->last_disk_size == i_size_read(inode); |
| } |
| |
| static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) |
| { |
| F2FS_I(inode)->i_current_depth = depth; |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid) |
| { |
| F2FS_I(inode)->i_xattr_nid = xnid; |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino) |
| { |
| F2FS_I(inode)->i_pino = pino; |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri) |
| { |
| struct f2fs_inode_info *fi = F2FS_I(inode); |
| |
| if (ri->i_inline & F2FS_INLINE_XATTR) |
| set_bit(FI_INLINE_XATTR, &fi->flags); |
| if (ri->i_inline & F2FS_INLINE_DATA) |
| set_bit(FI_INLINE_DATA, &fi->flags); |
| if (ri->i_inline & F2FS_INLINE_DENTRY) |
| set_bit(FI_INLINE_DENTRY, &fi->flags); |
| if (ri->i_inline & F2FS_DATA_EXIST) |
| set_bit(FI_DATA_EXIST, &fi->flags); |
| if (ri->i_inline & F2FS_INLINE_DOTS) |
| set_bit(FI_INLINE_DOTS, &fi->flags); |
| } |
| |
| static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri) |
| { |
| ri->i_inline = 0; |
| |
| if (is_inode_flag_set(inode, FI_INLINE_XATTR)) |
| ri->i_inline |= F2FS_INLINE_XATTR; |
| if (is_inode_flag_set(inode, FI_INLINE_DATA)) |
| ri->i_inline |= F2FS_INLINE_DATA; |
| if (is_inode_flag_set(inode, FI_INLINE_DENTRY)) |
| ri->i_inline |= F2FS_INLINE_DENTRY; |
| if (is_inode_flag_set(inode, FI_DATA_EXIST)) |
| ri->i_inline |= F2FS_DATA_EXIST; |
| if (is_inode_flag_set(inode, FI_INLINE_DOTS)) |
| ri->i_inline |= F2FS_INLINE_DOTS; |
| } |
| |
| static inline int f2fs_has_inline_xattr(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_INLINE_XATTR); |
| } |
| |
| static inline unsigned int addrs_per_inode(struct inode *inode) |
| { |
| if (f2fs_has_inline_xattr(inode)) |
| return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; |
| return DEF_ADDRS_PER_INODE; |
| } |
| |
| static inline void *inline_xattr_addr(struct page *page) |
| { |
| struct f2fs_inode *ri = F2FS_INODE(page); |
| return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
| F2FS_INLINE_XATTR_ADDRS]); |
| } |
| |
| static inline int inline_xattr_size(struct inode *inode) |
| { |
| if (f2fs_has_inline_xattr(inode)) |
| return F2FS_INLINE_XATTR_ADDRS << 2; |
| else |
| return 0; |
| } |
| |
| static inline int f2fs_has_inline_data(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_INLINE_DATA); |
| } |
| |
| static inline void f2fs_clear_inline_inode(struct inode *inode) |
| { |
| clear_inode_flag(inode, FI_INLINE_DATA); |
| clear_inode_flag(inode, FI_DATA_EXIST); |
| } |
| |
| static inline int f2fs_exist_data(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_DATA_EXIST); |
| } |
| |
| static inline int f2fs_has_inline_dots(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_INLINE_DOTS); |
| } |
| |
| static inline bool f2fs_is_atomic_file(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_ATOMIC_FILE); |
| } |
| |
| static inline bool f2fs_is_volatile_file(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_VOLATILE_FILE); |
| } |
| |
| static inline bool f2fs_is_first_block_written(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN); |
| } |
| |
| static inline bool f2fs_is_drop_cache(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_DROP_CACHE); |
| } |
| |
| static inline void *inline_data_addr(struct page *page) |
| { |
| struct f2fs_inode *ri = F2FS_INODE(page); |
| return (void *)&(ri->i_addr[1]); |
| } |
| |
| static inline int f2fs_has_inline_dentry(struct inode *inode) |
| { |
| return is_inode_flag_set(inode, FI_INLINE_DENTRY); |
| } |
| |
| static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) |
| { |
| if (!f2fs_has_inline_dentry(dir)) |
| kunmap(page); |
| } |
| |
| static inline int is_file(struct inode *inode, int type) |
| { |
| return F2FS_I(inode)->i_advise & type; |
| } |
| |
| static inline void set_file(struct inode *inode, int type) |
| { |
| F2FS_I(inode)->i_advise |= type; |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline void clear_file(struct inode *inode, int type) |
| { |
| F2FS_I(inode)->i_advise &= ~type; |
| f2fs_mark_inode_dirty_sync(inode); |
| } |
| |
| static inline int f2fs_readonly(struct super_block *sb) |
| { |
| return sb->s_flags & MS_RDONLY; |
| } |
| |
| static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
| { |
| return is_set_ckpt_flags(sbi, CP_ERROR_FLAG); |
| } |
| |
| static inline bool is_dot_dotdot(const struct qstr *str) |
| { |
| if (str->len == 1 && str->name[0] == '.') |
| return true; |
| |
| if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.') |
| return true; |
| |
| return false; |
| } |
| |
| static inline bool f2fs_may_extent_tree(struct inode *inode) |
| { |
| struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| |
| if (!test_opt(sbi, EXTENT_CACHE) || |
| is_inode_flag_set(inode, FI_NO_EXTENT)) |
| return false; |
| |
| /* |
| * for recovered files during mount do not create extents |
| * if shrinker is not registered. |
| */ |
| if (list_empty(&sbi->s_list)) |
| return false; |
| |
| return S_ISREG(inode->i_mode); |
| } |
| |
| static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi, |
| size_t size, gfp_t flags) |
| { |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| if (time_to_inject(sbi, FAULT_KMALLOC)) |
| return NULL; |
| #endif |
| return kmalloc(size, flags); |
| } |
| |
| static inline void *f2fs_kvmalloc(size_t size, gfp_t flags) |
| { |
| void *ret; |
| |
| ret = kmalloc(size, flags | __GFP_NOWARN); |
| if (!ret) |
| ret = __vmalloc(size, flags, PAGE_KERNEL); |
| return ret; |
| } |
| |
| static inline void *f2fs_kvzalloc(size_t size, gfp_t flags) |
| { |
| void *ret; |
| |
| ret = kzalloc(size, flags | __GFP_NOWARN); |
| if (!ret) |
| ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL); |
| return ret; |
| } |
| |
| #define get_inode_mode(i) \ |
| ((is_inode_flag_set(i, FI_ACL_MODE)) ? \ |
| (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) |
| |
| /* get offset of first page in next direct node */ |
| #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \ |
| ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \ |
| (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \ |
| ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode)) |
| |
| #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO(fio->type) == META && \ |
| (!is_read_io(fio->op) || fio->is_meta)) |
| |
| bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, |
| block_t blkaddr, int type); |
| void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...); |
| static inline void verify_blkaddr(struct f2fs_sb_info *sbi, |
| block_t blkaddr, int type) |
| { |
| if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) { |
| f2fs_msg(sbi->sb, KERN_ERR, |
| "invalid blkaddr: %u, type: %d, run fsck to fix.", |
| blkaddr, type); |
| f2fs_bug_on(sbi, 1); |
| } |
| } |
| |
| static inline bool __is_valid_data_blkaddr(block_t blkaddr) |
| { |
| if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) |
| return false; |
| return true; |
| } |
| |
| static inline bool is_valid_data_blkaddr(struct f2fs_sb_info *sbi, |
| block_t blkaddr) |
| { |
| if (!__is_valid_data_blkaddr(blkaddr)) |
| return false; |
| verify_blkaddr(sbi, blkaddr, DATA_GENERIC); |
| return true; |
| } |
| |
| /* |
| * file.c |
| */ |
| int f2fs_sync_file(struct file *, loff_t, loff_t, int); |
| void truncate_data_blocks(struct dnode_of_data *); |
| int truncate_blocks(struct inode *, u64, bool); |
| int f2fs_truncate(struct inode *); |
| int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
| int f2fs_setattr(struct dentry *, struct iattr *); |
| int truncate_hole(struct inode *, pgoff_t, pgoff_t); |
| int truncate_data_blocks_range(struct dnode_of_data *, int); |
| long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
| long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
| |
| /* |
| * inode.c |
| */ |
| void f2fs_set_inode_flags(struct inode *); |
| struct inode *f2fs_iget(struct super_block *, unsigned long); |
| struct inode *f2fs_iget_retry(struct super_block *, unsigned long); |
| int try_to_free_nats(struct f2fs_sb_info *, int); |
| int update_inode(struct inode *, struct page *); |
| int update_inode_page(struct inode *); |
| int f2fs_write_inode(struct inode *, struct writeback_control *); |
| void f2fs_evict_inode(struct inode *); |
| void handle_failed_inode(struct inode *); |
| |
| /* |
| * namei.c |
| */ |
| struct dentry *f2fs_get_parent(struct dentry *child); |
| |
| /* |
| * dir.c |
| */ |
| void set_de_type(struct f2fs_dir_entry *, umode_t); |
| unsigned char get_de_type(struct f2fs_dir_entry *); |
| struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *, |
| f2fs_hash_t, int *, struct f2fs_dentry_ptr *); |
| bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *, |
| unsigned int, struct fscrypt_str *); |
| void do_make_empty_dir(struct inode *, struct inode *, |
| struct f2fs_dentry_ptr *); |
| struct page *init_inode_metadata(struct inode *, struct inode *, |
| const struct qstr *, const struct qstr *, struct page *); |
| void update_parent_metadata(struct inode *, struct inode *, unsigned int); |
| int room_for_filename(const void *, int, int); |
| void f2fs_drop_nlink(struct inode *, struct inode *); |
| struct f2fs_dir_entry *__f2fs_find_entry(struct inode *, struct fscrypt_name *, |
| struct page **); |
| struct f2fs_dir_entry *f2fs_find_entry(struct inode *, const struct qstr *, |
| struct page **); |
| struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); |
| ino_t f2fs_inode_by_name(struct inode *, const struct qstr *, struct page **); |
| void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, |
| struct page *, struct inode *); |
| int update_dent_inode(struct inode *, struct inode *, const struct qstr *); |
| void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *, |
| const struct qstr *, f2fs_hash_t , unsigned int); |
| int f2fs_add_regular_entry(struct inode *, const struct qstr *, |
| const struct qstr *, struct inode *, nid_t, umode_t); |
| int __f2fs_do_add_link(struct inode *, struct fscrypt_name*, struct inode *, |
| nid_t, umode_t); |
| int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t, |
| umode_t); |
| void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, |
| struct inode *); |
| int f2fs_do_tmpfile(struct inode *, struct inode *); |
| bool f2fs_empty_dir(struct inode *); |
| |
| static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
| { |
| return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name, |
| inode, inode->i_ino, inode->i_mode); |
| } |
| |
| /* |
| * super.c |
| */ |
| int f2fs_inode_dirtied(struct inode *); |
| void f2fs_inode_synced(struct inode *); |
| int f2fs_commit_super(struct f2fs_sb_info *, bool); |
| int f2fs_sync_fs(struct super_block *, int); |
| extern __printf(3, 4) |
| void f2fs_msg(struct super_block *, const char *, const char *, ...); |
| int sanity_check_ckpt(struct f2fs_sb_info *sbi); |
| |
| /* |
| * hash.c |
| */ |
| f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info, |
| struct fscrypt_name *fname); |
| |
| /* |
| * node.c |
| */ |
| struct dnode_of_data; |
| struct node_info; |
| |
| bool available_free_memory(struct f2fs_sb_info *, int); |
| int need_dentry_mark(struct f2fs_sb_info *, nid_t); |
| bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); |
| bool need_inode_block_update(struct f2fs_sb_info *, nid_t); |
| void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); |
| pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t); |
| int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); |
| int truncate_inode_blocks(struct inode *, pgoff_t); |
| int truncate_xattr_node(struct inode *, struct page *); |
| int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
| int remove_inode_page(struct inode *); |
| struct page *new_inode_page(struct inode *); |
| struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
| void ra_node_page(struct f2fs_sb_info *, nid_t); |
| struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); |
| struct page *get_node_page_ra(struct page *, int); |
| void move_node_page(struct page *, int); |
| int fsync_node_pages(struct f2fs_sb_info *, struct inode *, |
| struct writeback_control *, bool); |
| int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *); |
| void build_free_nids(struct f2fs_sb_info *); |
| bool alloc_nid(struct f2fs_sb_info *, nid_t *); |
| void alloc_nid_done(struct f2fs_sb_info *, nid_t); |
| void alloc_nid_failed(struct f2fs_sb_info *, nid_t); |
| int try_to_free_nids(struct f2fs_sb_info *, int); |
| void recover_inline_xattr(struct inode *, struct page *); |
| void recover_xattr_data(struct inode *, struct page *, block_t); |
| int recover_inode_page(struct f2fs_sb_info *, struct page *); |
| int restore_node_summary(struct f2fs_sb_info *, unsigned int, |
| struct f2fs_summary_block *); |
| void flush_nat_entries(struct f2fs_sb_info *); |
| int build_node_manager(struct f2fs_sb_info *); |
| void destroy_node_manager(struct f2fs_sb_info *); |
| int __init create_node_manager_caches(void); |
| void destroy_node_manager_caches(void); |
| |
| /* |
| * segment.c |
| */ |
| void register_inmem_page(struct inode *, struct page *); |
| void drop_inmem_pages(struct inode *); |
| int commit_inmem_pages(struct inode *); |
| void f2fs_balance_fs(struct f2fs_sb_info *, bool); |
| void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
| int f2fs_issue_flush(struct f2fs_sb_info *); |
| int create_flush_cmd_control(struct f2fs_sb_info *); |
| void destroy_flush_cmd_control(struct f2fs_sb_info *); |
| void invalidate_blocks(struct f2fs_sb_info *, block_t); |
| bool is_checkpointed_data(struct f2fs_sb_info *, block_t); |
| void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
| void f2fs_wait_all_discard_bio(struct f2fs_sb_info *); |
| void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *); |
| void release_discard_addrs(struct f2fs_sb_info *); |
| int npages_for_summary_flush(struct f2fs_sb_info *, bool); |
| void allocate_new_segments(struct f2fs_sb_info *); |
| int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); |
| struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); |
| void update_meta_page(struct f2fs_sb_info *, void *, block_t); |
| void write_meta_page(struct f2fs_sb_info *, struct page *); |
| void write_node_page(unsigned int, struct f2fs_io_info *); |
| void write_data_page(struct dnode_of_data *, struct f2fs_io_info *); |
| void rewrite_data_page(struct f2fs_io_info *); |
| void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *, |
| block_t, block_t, bool, bool); |
| void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *, |
| block_t, block_t, unsigned char, bool, bool); |
| void allocate_data_block(struct f2fs_sb_info *, struct page *, |
| block_t, block_t *, struct f2fs_summary *, int); |
| void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); |
| void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t); |
| void write_data_summaries(struct f2fs_sb_info *, block_t); |
| void write_node_summaries(struct f2fs_sb_info *, block_t); |
| int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int); |
| void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); |
| int build_segment_manager(struct f2fs_sb_info *); |
| void destroy_segment_manager(struct f2fs_sb_info *); |
| int __init create_segment_manager_caches(void); |
| void destroy_segment_manager_caches(void); |
| |
| /* |
| * checkpoint.c |
| */ |
| void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool); |
| struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); |
| struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); |
| struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t); |
| bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, |
| block_t blkaddr, int type); |
| int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool); |
| void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t); |
| long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
| void add_ino_entry(struct f2fs_sb_info *, nid_t, int type); |
| void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type); |
| void release_ino_entry(struct f2fs_sb_info *, bool); |
| bool exist_written_data(struct f2fs_sb_info *, nid_t, int); |
| int f2fs_sync_inode_meta(struct f2fs_sb_info *); |
| int acquire_orphan_inode(struct f2fs_sb_info *); |
| void release_orphan_inode(struct f2fs_sb_info *); |
| void add_orphan_inode(struct inode *); |
| void remove_orphan_inode(struct f2fs_sb_info *, nid_t); |
| int recover_orphan_inodes(struct f2fs_sb_info *); |
| int get_valid_checkpoint(struct f2fs_sb_info *); |
| void update_dirty_page(struct inode *, struct page *); |
| void remove_dirty_inode(struct inode *); |
| int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type); |
| int write_checkpoint(struct f2fs_sb_info *, struct cp_control *); |
| void init_ino_entry_info(struct f2fs_sb_info *); |
| int __init create_checkpoint_caches(void); |
| void destroy_checkpoint_caches(void); |
| |
| /* |
| * data.c |
| */ |
| void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
| void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *, |
| struct page *, nid_t, enum page_type, int); |
| void f2fs_flush_merged_bios(struct f2fs_sb_info *); |
| int f2fs_submit_page_bio(struct f2fs_io_info *); |
| void f2fs_submit_page_mbio(struct f2fs_io_info *); |
| void set_data_blkaddr(struct dnode_of_data *); |
| void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t); |
| int reserve_new_blocks(struct dnode_of_data *, blkcnt_t); |
| int reserve_new_block(struct dnode_of_data *); |
| int f2fs_get_block(struct dnode_of_data *, pgoff_t); |
| ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *); |
| int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
| struct page *get_read_data_page(struct inode *, pgoff_t, int, bool); |
| struct page *find_data_page(struct inode *, pgoff_t); |
| struct page *get_lock_data_page(struct inode *, pgoff_t, bool); |
| struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
| int do_write_data_page(struct f2fs_io_info *); |
| int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int); |
| int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |
| void f2fs_set_page_dirty_nobuffers(struct page *); |
| void f2fs_invalidate_page(struct page *, unsigned int, unsigned int); |
| int f2fs_release_page(struct page *, gfp_t); |
| #ifdef CONFIG_MIGRATION |
| int f2fs_migrate_page(struct address_space *, struct page *, struct page *, |
| enum migrate_mode); |
| #endif |
| |
| /* |
| * gc.c |
| */ |
| int start_gc_thread(struct f2fs_sb_info *); |
| void stop_gc_thread(struct f2fs_sb_info *); |
| block_t start_bidx_of_node(unsigned int, struct inode *); |
| int f2fs_gc(struct f2fs_sb_info *, bool); |
| void build_gc_manager(struct f2fs_sb_info *); |
| |
| /* |
| * recovery.c |
| */ |
| int recover_fsync_data(struct f2fs_sb_info *, bool); |
| bool space_for_roll_forward(struct f2fs_sb_info *); |
| |
| /* |
| * debug.c |
| */ |
| #ifdef CONFIG_F2FS_STAT_FS |
| struct f2fs_stat_info { |
| struct list_head stat_list; |
| struct f2fs_sb_info *sbi; |
| int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
| int main_area_segs, main_area_sections, main_area_zones; |
| unsigned long long hit_largest, hit_cached, hit_rbtree; |
| unsigned long long hit_total, total_ext; |
| int ext_tree, zombie_tree, ext_node; |
| int ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, ndirty_imeta; |
| int inmem_pages; |
| unsigned int ndirty_dirs, ndirty_files, ndirty_all; |
| int nats, dirty_nats, sits, dirty_sits, fnids; |
| int total_count, utilization; |
| int bg_gc, wb_bios; |
| int inline_xattr, inline_inode, inline_dir, orphans; |
| unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; |
| unsigned int bimodal, avg_vblocks; |
| int util_free, util_valid, util_invalid; |
| int rsvd_segs, overp_segs; |
| int dirty_count, node_pages, meta_pages; |
| int prefree_count, call_count, cp_count, bg_cp_count; |
| int tot_segs, node_segs, data_segs, free_segs, free_secs; |
| int bg_node_segs, bg_data_segs; |
| int tot_blks, data_blks, node_blks; |
| int bg_data_blks, bg_node_blks; |
| int curseg[NR_CURSEG_TYPE]; |
| int cursec[NR_CURSEG_TYPE]; |
| int curzone[NR_CURSEG_TYPE]; |
| |
| unsigned int segment_count[2]; |
| unsigned int block_count[2]; |
| unsigned int inplace_count; |
| unsigned long long base_mem, cache_mem, page_mem; |
| }; |
| |
| static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
| { |
| return (struct f2fs_stat_info *)sbi->stat_info; |
| } |
| |
| #define stat_inc_cp_count(si) ((si)->cp_count++) |
| #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++) |
| #define stat_inc_call_count(si) ((si)->call_count++) |
| #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) |
| #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) |
| #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--) |
| #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext)) |
| #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree)) |
| #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest)) |
| #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached)) |
| #define stat_inc_inline_xattr(inode) \ |
| do { \ |
| if (f2fs_has_inline_xattr(inode)) \ |
| (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \ |
| } while (0) |
| #define stat_dec_inline_xattr(inode) \ |
| do { \ |
| if (f2fs_has_inline_xattr(inode)) \ |
| (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \ |
| } while (0) |
| #define stat_inc_inline_inode(inode) \ |
| do { \ |
| if (f2fs_has_inline_data(inode)) \ |
| (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ |
| } while (0) |
| #define stat_dec_inline_inode(inode) \ |
| do { \ |
| if (f2fs_has_inline_data(inode)) \ |
| (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ |
| } while (0) |
| #define stat_inc_inline_dir(inode) \ |
| do { \ |
| if (f2fs_has_inline_dentry(inode)) \ |
| (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ |
| } while (0) |
| #define stat_dec_inline_dir(inode) \ |
| do { \ |
| if (f2fs_has_inline_dentry(inode)) \ |
| (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ |
| } while (0) |
| #define stat_inc_seg_type(sbi, curseg) \ |
| ((sbi)->segment_count[(curseg)->alloc_type]++) |
| #define stat_inc_block_count(sbi, curseg) \ |
| ((sbi)->block_count[(curseg)->alloc_type]++) |
| #define stat_inc_inplace_blocks(sbi) \ |
| (atomic_inc(&(sbi)->inplace_count)) |
| #define stat_inc_seg_count(sbi, type, gc_type) \ |
| do { \ |
| struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| (si)->tot_segs++; \ |
| if (type == SUM_TYPE_DATA) { \ |
| si->data_segs++; \ |
| si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ |
| } else { \ |
| si->node_segs++; \ |
| si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ |
| } \ |
| } while (0) |
| |
| #define stat_inc_tot_blk_count(si, blks) \ |
| (si->tot_blks += (blks)) |
| |
| #define stat_inc_data_blk_count(sbi, blks, gc_type) \ |
| do { \ |
| struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| stat_inc_tot_blk_count(si, blks); \ |
| si->data_blks += (blks); \ |
| si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \ |
| } while (0) |
| |
| #define stat_inc_node_blk_count(sbi, blks, gc_type) \ |
| do { \ |
| struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| stat_inc_tot_blk_count(si, blks); \ |
| si->node_blks += (blks); \ |
| si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \ |
| } while (0) |
| |
| int f2fs_build_stats(struct f2fs_sb_info *); |
| void f2fs_destroy_stats(struct f2fs_sb_info *); |
| int __init f2fs_create_root_stats(void); |
| void f2fs_destroy_root_stats(void); |
| #else |
| #define stat_inc_cp_count(si) |
| #define stat_inc_bg_cp_count(si) |
| #define stat_inc_call_count(si) |
| #define stat_inc_bggc_count(si) |
| #define stat_inc_dirty_inode(sbi, type) |
| #define stat_dec_dirty_inode(sbi, type) |
| #define stat_inc_total_hit(sb) |
| #define stat_inc_rbtree_node_hit(sb) |
| #define stat_inc_largest_node_hit(sbi) |
| #define stat_inc_cached_node_hit(sbi) |
| #define stat_inc_inline_xattr(inode) |
| #define stat_dec_inline_xattr(inode) |
| #define stat_inc_inline_inode(inode) |
| #define stat_dec_inline_inode(inode) |
| #define stat_inc_inline_dir(inode) |
| #define stat_dec_inline_dir(inode) |
| #define stat_inc_seg_type(sbi, curseg) |
| #define stat_inc_block_count(sbi, curseg) |
| #define stat_inc_inplace_blocks(sbi) |
| #define stat_inc_seg_count(sbi, type, gc_type) |
| #define stat_inc_tot_blk_count(si, blks) |
| #define stat_inc_data_blk_count(sbi, blks, gc_type) |
| #define stat_inc_node_blk_count(sbi, blks, gc_type) |
| |
| static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } |
| static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } |
| static inline int __init f2fs_create_root_stats(void) { return 0; } |
| static inline void f2fs_destroy_root_stats(void) { } |
| #endif |
| |
| extern const struct file_operations f2fs_dir_operations; |
| extern const struct file_operations f2fs_file_operations; |
| extern const struct inode_operations f2fs_file_inode_operations; |
| extern const struct address_space_operations f2fs_dblock_aops; |
| extern const struct address_space_operations f2fs_node_aops; |
| extern const struct address_space_operations f2fs_meta_aops; |
| extern const struct inode_operations f2fs_dir_inode_operations; |
| extern const struct inode_operations f2fs_symlink_inode_operations; |
| extern const struct inode_operations f2fs_encrypted_symlink_inode_operations; |
| extern const struct inode_operations f2fs_special_inode_operations; |
| extern struct kmem_cache *inode_entry_slab; |
| |
| /* |
| * inline.c |
| */ |
| bool f2fs_may_inline_data(struct inode *); |
| bool f2fs_may_inline_dentry(struct inode *); |
| void read_inline_data(struct page *, struct page *); |
| bool truncate_inline_inode(struct page *, u64); |
| int f2fs_read_inline_data(struct inode *, struct page *); |
| int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); |
| int f2fs_convert_inline_inode(struct inode *); |
| int f2fs_write_inline_data(struct inode *, struct page *); |
| bool recover_inline_data(struct inode *, struct page *); |
| struct f2fs_dir_entry *find_in_inline_dir(struct inode *, |
| struct fscrypt_name *, struct page **); |
| int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); |
| int f2fs_add_inline_entry(struct inode *, const struct qstr *, |
| const struct qstr *, struct inode *, nid_t, umode_t); |
| void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, |
| struct inode *, struct inode *); |
| bool f2fs_empty_inline_dir(struct inode *); |
| int f2fs_read_inline_dir(struct file *, struct dir_context *, |
| struct fscrypt_str *); |
| int f2fs_inline_data_fiemap(struct inode *, |
| struct fiemap_extent_info *, __u64, __u64); |
| |
| /* |
| * shrinker.c |
| */ |
| unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *); |
| unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *); |
| void f2fs_join_shrinker(struct f2fs_sb_info *); |
| void f2fs_leave_shrinker(struct f2fs_sb_info *); |
| |
| /* |
| * extent_cache.c |
| */ |
| unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int); |
| bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *); |
| void f2fs_drop_extent_tree(struct inode *); |
| unsigned int f2fs_destroy_extent_node(struct inode *); |
| void f2fs_destroy_extent_tree(struct inode *); |
| bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *); |
| void f2fs_update_extent_cache(struct dnode_of_data *); |
| void f2fs_update_extent_cache_range(struct dnode_of_data *dn, |
| pgoff_t, block_t, unsigned int); |
| void init_extent_cache_info(struct f2fs_sb_info *); |
| int __init create_extent_cache(void); |
| void destroy_extent_cache(void); |
| |
| /* |
| * crypto support |
| */ |
| static inline bool f2fs_encrypted_inode(struct inode *inode) |
| { |
| return file_is_encrypt(inode); |
| } |
| |
| static inline void f2fs_set_encrypted_inode(struct inode *inode) |
| { |
| #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| file_set_encrypt(inode); |
| #endif |
| } |
| |
| static inline bool f2fs_bio_encrypted(struct bio *bio) |
| { |
| return bio->bi_private != NULL; |
| } |
| |
| static inline int f2fs_sb_has_crypto(struct super_block *sb) |
| { |
| return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT); |
| } |
| |
| static inline int f2fs_sb_mounted_hmsmr(struct super_block *sb) |
| { |
| return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_HMSMR); |
| } |
| |
| static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt) |
| { |
| clear_opt(sbi, ADAPTIVE); |
| clear_opt(sbi, LFS); |
| |
| switch (mt) { |
| case F2FS_MOUNT_ADAPTIVE: |
| set_opt(sbi, ADAPTIVE); |
| break; |
| case F2FS_MOUNT_LFS: |
| set_opt(sbi, LFS); |
| break; |
| } |
| } |
| |
| static inline bool f2fs_may_encrypt(struct inode *inode) |
| { |
| #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| umode_t mode = inode->i_mode; |
| |
| return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)); |
| #else |
| return 0; |
| #endif |
| } |
| |
| #ifndef CONFIG_F2FS_FS_ENCRYPTION |
| #define fscrypt_set_d_op(i) |
| #define fscrypt_get_ctx fscrypt_notsupp_get_ctx |
| #define fscrypt_release_ctx fscrypt_notsupp_release_ctx |
| #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page |
| #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page |
| #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages |
| #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page |
| #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page |
| #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range |
| #define fscrypt_process_policy fscrypt_notsupp_process_policy |
| #define fscrypt_get_policy fscrypt_notsupp_get_policy |
| #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context |
| #define fscrypt_inherit_context fscrypt_notsupp_inherit_context |
| #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info |
| #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info |
| #define fscrypt_setup_filename fscrypt_notsupp_setup_filename |
| #define fscrypt_free_filename fscrypt_notsupp_free_filename |
| #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size |
| #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer |
| #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer |
| #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr |
| #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk |
| #endif |
| #endif |