mirror of https://gitee.com/openkylin/linux.git
1425 lines
42 KiB
C
1425 lines
42 KiB
C
/*
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* fs/f2fs/f2fs.h
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _LINUX_F2FS_H
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#define _LINUX_F2FS_H
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#include <linux/types.h>
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#include <linux/page-flags.h>
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#include <linux/buffer_head.h>
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#include <linux/slab.h>
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#include <linux/crc32.h>
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#include <linux/magic.h>
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#include <linux/kobject.h>
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#include <linux/sched.h>
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#ifdef CONFIG_F2FS_CHECK_FS
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#define f2fs_bug_on(condition) BUG_ON(condition)
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#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
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#else
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#define f2fs_bug_on(condition)
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#define f2fs_down_write(x, y) down_write(x)
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#endif
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/*
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* For mount options
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*/
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#define F2FS_MOUNT_BG_GC 0x00000001
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#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
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#define F2FS_MOUNT_DISCARD 0x00000004
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#define F2FS_MOUNT_NOHEAP 0x00000008
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#define F2FS_MOUNT_XATTR_USER 0x00000010
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#define F2FS_MOUNT_POSIX_ACL 0x00000020
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#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
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#define F2FS_MOUNT_INLINE_XATTR 0x00000080
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#define F2FS_MOUNT_INLINE_DATA 0x00000100
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#define F2FS_MOUNT_FLUSH_MERGE 0x00000200
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#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
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#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
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#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
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#define ver_after(a, b) (typecheck(unsigned long long, a) && \
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typecheck(unsigned long long, b) && \
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((long long)((a) - (b)) > 0))
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typedef u32 block_t; /*
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* should not change u32, since it is the on-disk block
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* address format, __le32.
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*/
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typedef u32 nid_t;
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struct f2fs_mount_info {
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unsigned int opt;
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};
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#define CRCPOLY_LE 0xedb88320
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static inline __u32 f2fs_crc32(void *buf, size_t len)
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{
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unsigned char *p = (unsigned char *)buf;
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__u32 crc = F2FS_SUPER_MAGIC;
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int i;
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while (len--) {
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crc ^= *p++;
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for (i = 0; i < 8; i++)
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crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
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}
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return crc;
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}
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static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
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{
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return f2fs_crc32(buf, buf_size) == blk_crc;
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}
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/*
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* For checkpoint manager
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*/
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enum {
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NAT_BITMAP,
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SIT_BITMAP
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};
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/*
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* For CP/NAT/SIT/SSA readahead
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*/
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enum {
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META_CP,
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META_NAT,
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META_SIT,
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META_SSA
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};
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/* for the list of orphan inodes */
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struct orphan_inode_entry {
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struct list_head list; /* list head */
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nid_t ino; /* inode number */
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};
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/* for the list of directory inodes */
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struct dir_inode_entry {
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struct list_head list; /* list head */
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struct inode *inode; /* vfs inode pointer */
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};
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/* for the list of blockaddresses to be discarded */
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struct discard_entry {
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struct list_head list; /* list head */
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block_t blkaddr; /* block address to be discarded */
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int len; /* # of consecutive blocks of the discard */
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};
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/* for the list of fsync inodes, used only during recovery */
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struct fsync_inode_entry {
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struct list_head list; /* list head */
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struct inode *inode; /* vfs inode pointer */
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block_t blkaddr; /* block address locating the last inode */
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};
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#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
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#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
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#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
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#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
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#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
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#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
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static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
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{
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int before = nats_in_cursum(rs);
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rs->n_nats = cpu_to_le16(before + i);
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return before;
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}
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static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
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{
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int before = sits_in_cursum(rs);
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rs->n_sits = cpu_to_le16(before + i);
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return before;
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}
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/*
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* ioctl commands
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*/
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#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
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#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
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#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
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/*
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* ioctl commands in 32 bit emulation
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*/
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#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
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#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
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#endif
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/*
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* For INODE and NODE manager
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*/
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/*
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* XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
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* as its node offset to distinguish from index node blocks.
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* But some bits are used to mark the node block.
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*/
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#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
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>> OFFSET_BIT_SHIFT)
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enum {
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ALLOC_NODE, /* allocate a new node page if needed */
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LOOKUP_NODE, /* look up a node without readahead */
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LOOKUP_NODE_RA, /*
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* look up a node with readahead called
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* by get_data_block.
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*/
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};
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#define F2FS_LINK_MAX 32000 /* maximum link count per file */
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#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
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/* for in-memory extent cache entry */
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#define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
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struct extent_info {
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rwlock_t ext_lock; /* rwlock for consistency */
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unsigned int fofs; /* start offset in a file */
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u32 blk_addr; /* start block address of the extent */
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unsigned int len; /* length of the extent */
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};
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/*
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* i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
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*/
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#define FADVISE_COLD_BIT 0x01
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#define FADVISE_LOST_PINO_BIT 0x02
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#define DEF_DIR_LEVEL 0
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struct f2fs_inode_info {
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struct inode vfs_inode; /* serve a vfs inode */
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unsigned long i_flags; /* keep an inode flags for ioctl */
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unsigned char i_advise; /* use to give file attribute hints */
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unsigned char i_dir_level; /* use for dentry level for large dir */
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unsigned int i_current_depth; /* use only in directory structure */
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unsigned int i_pino; /* parent inode number */
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umode_t i_acl_mode; /* keep file acl mode temporarily */
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/* Use below internally in f2fs*/
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unsigned long flags; /* use to pass per-file flags */
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struct rw_semaphore i_sem; /* protect fi info */
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atomic_t dirty_dents; /* # of dirty dentry pages */
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f2fs_hash_t chash; /* hash value of given file name */
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unsigned int clevel; /* maximum level of given file name */
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nid_t i_xattr_nid; /* node id that contains xattrs */
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unsigned long long xattr_ver; /* cp version of xattr modification */
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struct extent_info ext; /* in-memory extent cache entry */
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struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
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};
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static inline void get_extent_info(struct extent_info *ext,
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struct f2fs_extent i_ext)
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{
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write_lock(&ext->ext_lock);
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ext->fofs = le32_to_cpu(i_ext.fofs);
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ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
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ext->len = le32_to_cpu(i_ext.len);
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write_unlock(&ext->ext_lock);
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}
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static inline void set_raw_extent(struct extent_info *ext,
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struct f2fs_extent *i_ext)
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{
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read_lock(&ext->ext_lock);
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i_ext->fofs = cpu_to_le32(ext->fofs);
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i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
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i_ext->len = cpu_to_le32(ext->len);
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read_unlock(&ext->ext_lock);
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}
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struct f2fs_nm_info {
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block_t nat_blkaddr; /* base disk address of NAT */
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nid_t max_nid; /* maximum possible node ids */
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nid_t available_nids; /* maximum available node ids */
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nid_t next_scan_nid; /* the next nid to be scanned */
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unsigned int ram_thresh; /* control the memory footprint */
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/* NAT cache management */
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struct radix_tree_root nat_root;/* root of the nat entry cache */
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rwlock_t nat_tree_lock; /* protect nat_tree_lock */
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unsigned int nat_cnt; /* the # of cached nat entries */
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struct list_head nat_entries; /* cached nat entry list (clean) */
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struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
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/* free node ids management */
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struct radix_tree_root free_nid_root;/* root of the free_nid cache */
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struct list_head free_nid_list; /* a list for free nids */
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spinlock_t free_nid_list_lock; /* protect free nid list */
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unsigned int fcnt; /* the number of free node id */
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struct mutex build_lock; /* lock for build free nids */
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/* for checkpoint */
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char *nat_bitmap; /* NAT bitmap pointer */
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int bitmap_size; /* bitmap size */
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};
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/*
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* this structure is used as one of function parameters.
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* all the information are dedicated to a given direct node block determined
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* by the data offset in a file.
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*/
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struct dnode_of_data {
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struct inode *inode; /* vfs inode pointer */
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struct page *inode_page; /* its inode page, NULL is possible */
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struct page *node_page; /* cached direct node page */
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nid_t nid; /* node id of the direct node block */
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unsigned int ofs_in_node; /* data offset in the node page */
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bool inode_page_locked; /* inode page is locked or not */
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block_t data_blkaddr; /* block address of the node block */
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};
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static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
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struct page *ipage, struct page *npage, nid_t nid)
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{
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memset(dn, 0, sizeof(*dn));
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dn->inode = inode;
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dn->inode_page = ipage;
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dn->node_page = npage;
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dn->nid = nid;
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}
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/*
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* For SIT manager
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*
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* By default, there are 6 active log areas across the whole main area.
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* When considering hot and cold data separation to reduce cleaning overhead,
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* we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
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* respectively.
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* In the current design, you should not change the numbers intentionally.
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* Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
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* logs individually according to the underlying devices. (default: 6)
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* Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
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* data and 8 for node logs.
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*/
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#define NR_CURSEG_DATA_TYPE (3)
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#define NR_CURSEG_NODE_TYPE (3)
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#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
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enum {
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CURSEG_HOT_DATA = 0, /* directory entry blocks */
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CURSEG_WARM_DATA, /* data blocks */
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CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
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CURSEG_HOT_NODE, /* direct node blocks of directory files */
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CURSEG_WARM_NODE, /* direct node blocks of normal files */
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CURSEG_COLD_NODE, /* indirect node blocks */
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NO_CHECK_TYPE
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};
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struct flush_cmd {
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struct flush_cmd *next;
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struct completion wait;
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int ret;
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};
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struct flush_cmd_control {
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struct task_struct *f2fs_issue_flush; /* flush thread */
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wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
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struct flush_cmd *issue_list; /* list for command issue */
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struct flush_cmd *dispatch_list; /* list for command dispatch */
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spinlock_t issue_lock; /* for issue list lock */
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struct flush_cmd *issue_tail; /* list tail of issue list */
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};
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struct f2fs_sm_info {
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struct sit_info *sit_info; /* whole segment information */
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struct free_segmap_info *free_info; /* free segment information */
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struct dirty_seglist_info *dirty_info; /* dirty segment information */
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struct curseg_info *curseg_array; /* active segment information */
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block_t seg0_blkaddr; /* block address of 0'th segment */
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block_t main_blkaddr; /* start block address of main area */
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block_t ssa_blkaddr; /* start block address of SSA area */
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unsigned int segment_count; /* total # of segments */
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unsigned int main_segments; /* # of segments in main area */
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unsigned int reserved_segments; /* # of reserved segments */
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unsigned int ovp_segments; /* # of overprovision segments */
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/* a threshold to reclaim prefree segments */
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unsigned int rec_prefree_segments;
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/* for small discard management */
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struct list_head discard_list; /* 4KB discard list */
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int nr_discards; /* # of discards in the list */
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int max_discards; /* max. discards to be issued */
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unsigned int ipu_policy; /* in-place-update policy */
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unsigned int min_ipu_util; /* in-place-update threshold */
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/* for flush command control */
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struct flush_cmd_control *cmd_control_info;
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};
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/*
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* For superblock
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*/
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/*
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* COUNT_TYPE for monitoring
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*
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* f2fs monitors the number of several block types such as on-writeback,
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* dirty dentry blocks, dirty node blocks, and dirty meta blocks.
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*/
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enum count_type {
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F2FS_WRITEBACK,
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F2FS_DIRTY_DENTS,
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F2FS_DIRTY_NODES,
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F2FS_DIRTY_META,
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NR_COUNT_TYPE,
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};
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/*
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* The below are the page types of bios used in submti_bio().
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* The available types are:
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* DATA User data pages. It operates as async mode.
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* NODE Node pages. It operates as async mode.
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* META FS metadata pages such as SIT, NAT, CP.
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* NR_PAGE_TYPE The number of page types.
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* META_FLUSH Make sure the previous pages are written
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* with waiting the bio's completion
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* ... Only can be used with META.
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*/
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#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
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enum page_type {
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DATA,
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NODE,
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META,
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NR_PAGE_TYPE,
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META_FLUSH,
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};
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struct f2fs_io_info {
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enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
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int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
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};
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#define is_read_io(rw) (((rw) & 1) == READ)
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struct f2fs_bio_info {
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struct f2fs_sb_info *sbi; /* f2fs superblock */
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struct bio *bio; /* bios to merge */
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sector_t last_block_in_bio; /* last block number */
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struct f2fs_io_info fio; /* store buffered io info. */
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struct rw_semaphore io_rwsem; /* blocking op for bio */
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};
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struct f2fs_sb_info {
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struct super_block *sb; /* pointer to VFS super block */
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struct proc_dir_entry *s_proc; /* proc entry */
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struct buffer_head *raw_super_buf; /* buffer head of raw sb */
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struct f2fs_super_block *raw_super; /* raw super block pointer */
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int s_dirty; /* dirty flag for checkpoint */
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/* for node-related operations */
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struct f2fs_nm_info *nm_info; /* node manager */
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struct inode *node_inode; /* cache node blocks */
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/* for segment-related operations */
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struct f2fs_sm_info *sm_info; /* segment manager */
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/* for bio operations */
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struct f2fs_bio_info read_io; /* for read bios */
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struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
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struct completion *wait_io; /* for completion bios */
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/* for checkpoint */
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struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
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struct inode *meta_inode; /* cache meta blocks */
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struct mutex cp_mutex; /* checkpoint procedure lock */
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struct rw_semaphore cp_rwsem; /* blocking FS operations */
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struct mutex node_write; /* locking node writes */
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struct mutex writepages; /* mutex for writepages() */
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bool por_doing; /* recovery is doing or not */
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wait_queue_head_t cp_wait;
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/* for orphan inode management */
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struct list_head orphan_inode_list; /* orphan inode list */
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spinlock_t orphan_inode_lock; /* for orphan inode list */
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unsigned int n_orphans; /* # of orphan inodes */
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unsigned int max_orphans; /* max orphan inodes */
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/* for directory inode management */
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struct list_head dir_inode_list; /* dir inode list */
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spinlock_t dir_inode_lock; /* for dir inode list lock */
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/* basic file system units */
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unsigned int log_sectors_per_block; /* log2 sectors per block */
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unsigned int log_blocksize; /* log2 block size */
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unsigned int blocksize; /* block size */
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unsigned int root_ino_num; /* root inode number*/
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unsigned int node_ino_num; /* node inode number*/
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unsigned int meta_ino_num; /* meta inode number*/
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unsigned int log_blocks_per_seg; /* log2 blocks per segment */
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unsigned int blocks_per_seg; /* blocks per segment */
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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 */
|
|
unsigned int total_valid_inode_count; /* valid inode count */
|
|
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 alloc_valid_block_count; /* # of allocated blocks */
|
|
block_t last_valid_block_count; /* for recovery */
|
|
u32 s_next_generation; /* for NFS support */
|
|
atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
|
|
|
|
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 */
|
|
|
|
/* 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 */
|
|
int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
|
|
int inline_inode; /* # of inline_data inodes */
|
|
int bg_gc; /* background gc calls */
|
|
unsigned int n_dirty_dirs; /* # of dir 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;
|
|
};
|
|
|
|
/*
|
|
* Inline functions
|
|
*/
|
|
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_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 void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
|
|
{
|
|
sbi->s_dirty = 1;
|
|
}
|
|
|
|
static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
|
|
{
|
|
sbi->s_dirty = 0;
|
|
}
|
|
|
|
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 void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
|
|
{
|
|
unsigned int 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_checkpoint *cp, unsigned int f)
|
|
{
|
|
unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
|
|
ckpt_flags &= (~f);
|
|
cp->ckpt_flags = cpu_to_le32(ckpt_flags);
|
|
}
|
|
|
|
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)
|
|
{
|
|
f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
|
|
}
|
|
|
|
static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
|
|
{
|
|
up_write(&sbi->cp_rwsem);
|
|
}
|
|
|
|
/*
|
|
* 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 bool inc_valid_block_count(struct f2fs_sb_info *sbi,
|
|
struct inode *inode, blkcnt_t count)
|
|
{
|
|
block_t valid_block_count;
|
|
|
|
spin_lock(&sbi->stat_lock);
|
|
valid_block_count =
|
|
sbi->total_valid_block_count + (block_t)count;
|
|
if (unlikely(valid_block_count > sbi->user_block_count)) {
|
|
spin_unlock(&sbi->stat_lock);
|
|
return false;
|
|
}
|
|
inode->i_blocks += count;
|
|
sbi->total_valid_block_count = valid_block_count;
|
|
sbi->alloc_valid_block_count += (block_t)count;
|
|
spin_unlock(&sbi->stat_lock);
|
|
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->total_valid_block_count < (block_t) count);
|
|
f2fs_bug_on(inode->i_blocks < count);
|
|
inode->i_blocks -= count;
|
|
sbi->total_valid_block_count -= (block_t)count;
|
|
spin_unlock(&sbi->stat_lock);
|
|
}
|
|
|
|
static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
|
|
{
|
|
atomic_inc(&sbi->nr_pages[count_type]);
|
|
F2FS_SET_SB_DIRT(sbi);
|
|
}
|
|
|
|
static inline void inode_inc_dirty_dents(struct inode *inode)
|
|
{
|
|
inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
|
|
atomic_inc(&F2FS_I(inode)->dirty_dents);
|
|
}
|
|
|
|
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_dents(struct inode *inode)
|
|
{
|
|
if (!S_ISDIR(inode->i_mode))
|
|
return;
|
|
|
|
dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
|
|
atomic_dec(&F2FS_I(inode)->dirty_dents);
|
|
}
|
|
|
|
static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
|
|
{
|
|
return atomic_read(&sbi->nr_pages[count_type]);
|
|
}
|
|
|
|
static inline int get_dirty_dents(struct inode *inode)
|
|
{
|
|
return atomic_read(&F2FS_I(inode)->dirty_dents);
|
|
}
|
|
|
|
static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
|
|
{
|
|
unsigned int pages_per_sec = sbi->segs_per_sec *
|
|
(1 << sbi->log_blocks_per_seg);
|
|
return ((get_pages(sbi, block_type) + pages_per_sec - 1)
|
|
>> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
|
|
}
|
|
|
|
static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->total_valid_block_count;
|
|
}
|
|
|
|
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 void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
|
|
{
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
int offset;
|
|
|
|
if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 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;
|
|
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
|
|
unsigned long long ckpt_version = cur_cp_version(ckpt);
|
|
|
|
start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
|
|
|
|
/*
|
|
* odd numbered checkpoint should at cp segment 0
|
|
* and even segent must be at cp segment 1
|
|
*/
|
|
if (!(ckpt_version & 1))
|
|
start_addr += sbi->blocks_per_seg;
|
|
|
|
return start_addr;
|
|
}
|
|
|
|
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)
|
|
inode->i_blocks++;
|
|
|
|
sbi->alloc_valid_block_count++;
|
|
sbi->total_valid_node_count++;
|
|
sbi->total_valid_block_count++;
|
|
spin_unlock(&sbi->stat_lock);
|
|
|
|
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->total_valid_block_count);
|
|
f2fs_bug_on(!sbi->total_valid_node_count);
|
|
f2fs_bug_on(!inode->i_blocks);
|
|
|
|
inode->i_blocks--;
|
|
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)
|
|
{
|
|
spin_lock(&sbi->stat_lock);
|
|
f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count);
|
|
sbi->total_valid_inode_count++;
|
|
spin_unlock(&sbi->stat_lock);
|
|
}
|
|
|
|
static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
|
|
{
|
|
spin_lock(&sbi->stat_lock);
|
|
f2fs_bug_on(!sbi->total_valid_inode_count);
|
|
sbi->total_valid_inode_count--;
|
|
spin_unlock(&sbi->stat_lock);
|
|
}
|
|
|
|
static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
|
|
{
|
|
return sbi->total_valid_inode_count;
|
|
}
|
|
|
|
static inline void f2fs_put_page(struct page *page, int unlock)
|
|
{
|
|
if (!page)
|
|
return;
|
|
|
|
if (unlock) {
|
|
f2fs_bug_on(!PageLocked(page));
|
|
unlock_page(page);
|
|
}
|
|
page_cache_release(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;
|
|
retry:
|
|
entry = kmem_cache_alloc(cachep, flags);
|
|
if (!entry) {
|
|
cond_resched();
|
|
goto retry;
|
|
}
|
|
|
|
return entry;
|
|
}
|
|
|
|
#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 int f2fs_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_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;
|
|
}
|
|
|
|
/* used for f2fs_inode_info->flags */
|
|
enum {
|
|
FI_NEW_INODE, /* indicate newly allocated inode */
|
|
FI_DIRTY_INODE, /* indicate inode is dirty or not */
|
|
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_UPDATE_DIR, /* should update inode block for consistency */
|
|
FI_DELAY_IPUT, /* used for the recovery */
|
|
FI_NO_EXTENT, /* not to use the extent cache */
|
|
FI_INLINE_XATTR, /* used for inline xattr */
|
|
FI_INLINE_DATA, /* used for inline data*/
|
|
};
|
|
|
|
static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
|
|
{
|
|
set_bit(flag, &fi->flags);
|
|
}
|
|
|
|
static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
|
|
{
|
|
return test_bit(flag, &fi->flags);
|
|
}
|
|
|
|
static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
|
|
{
|
|
clear_bit(flag, &fi->flags);
|
|
}
|
|
|
|
static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
|
|
{
|
|
fi->i_acl_mode = mode;
|
|
set_inode_flag(fi, FI_ACL_MODE);
|
|
}
|
|
|
|
static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
|
|
{
|
|
if (is_inode_flag_set(fi, FI_ACL_MODE)) {
|
|
clear_inode_flag(fi, FI_ACL_MODE);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline void get_inline_info(struct f2fs_inode_info *fi,
|
|
struct f2fs_inode *ri)
|
|
{
|
|
if (ri->i_inline & F2FS_INLINE_XATTR)
|
|
set_inode_flag(fi, FI_INLINE_XATTR);
|
|
if (ri->i_inline & F2FS_INLINE_DATA)
|
|
set_inode_flag(fi, FI_INLINE_DATA);
|
|
}
|
|
|
|
static inline void set_raw_inline(struct f2fs_inode_info *fi,
|
|
struct f2fs_inode *ri)
|
|
{
|
|
ri->i_inline = 0;
|
|
|
|
if (is_inode_flag_set(fi, FI_INLINE_XATTR))
|
|
ri->i_inline |= F2FS_INLINE_XATTR;
|
|
if (is_inode_flag_set(fi, FI_INLINE_DATA))
|
|
ri->i_inline |= F2FS_INLINE_DATA;
|
|
}
|
|
|
|
static inline int f2fs_has_inline_xattr(struct inode *inode)
|
|
{
|
|
return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
|
|
}
|
|
|
|
static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
|
|
{
|
|
if (f2fs_has_inline_xattr(&fi->vfs_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(F2FS_I(inode), FI_INLINE_DATA);
|
|
}
|
|
|
|
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_readonly(struct super_block *sb)
|
|
{
|
|
return sb->s_flags & MS_RDONLY;
|
|
}
|
|
|
|
static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
|
|
{
|
|
set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
|
|
sbi->sb->s_flags |= MS_RDONLY;
|
|
}
|
|
|
|
#define get_inode_mode(i) \
|
|
((is_inode_flag_set(F2FS_I(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, fi) \
|
|
((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
|
|
(pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
|
|
ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
|
|
|
|
/*
|
|
* 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);
|
|
void 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);
|
|
int try_to_free_nats(struct f2fs_sb_info *, int);
|
|
void update_inode(struct inode *, struct page *);
|
|
void update_inode_page(struct inode *);
|
|
int f2fs_write_inode(struct inode *, struct writeback_control *);
|
|
void f2fs_evict_inode(struct inode *);
|
|
|
|
/*
|
|
* namei.c
|
|
*/
|
|
struct dentry *f2fs_get_parent(struct dentry *child);
|
|
|
|
/*
|
|
* dir.c
|
|
*/
|
|
struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
|
|
struct page **);
|
|
struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
|
|
ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
|
|
void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
|
|
struct page *, struct inode *);
|
|
int update_dent_inode(struct inode *, const struct qstr *);
|
|
int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
|
|
void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
|
|
int f2fs_make_empty(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(dentry->d_parent->d_inode, &dentry->d_name,
|
|
inode);
|
|
}
|
|
|
|
/*
|
|
* super.c
|
|
*/
|
|
int f2fs_sync_fs(struct super_block *, int);
|
|
extern __printf(3, 4)
|
|
void f2fs_msg(struct super_block *, const char *, const char *, ...);
|
|
|
|
/*
|
|
* hash.c
|
|
*/
|
|
f2fs_hash_t f2fs_dentry_hash(const char *, size_t);
|
|
|
|
/*
|
|
* node.c
|
|
*/
|
|
struct dnode_of_data;
|
|
struct node_info;
|
|
|
|
bool available_free_memory(struct f2fs_sb_info *, int);
|
|
int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
|
|
bool fsync_mark_done(struct f2fs_sb_info *, nid_t);
|
|
void fsync_mark_clear(struct f2fs_sb_info *, nid_t);
|
|
void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
|
|
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);
|
|
void remove_inode_page(struct inode *);
|
|
struct page *new_inode_page(struct inode *, const struct qstr *);
|
|
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 sync_inode_page(struct dnode_of_data *);
|
|
int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
|
|
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);
|
|
void recover_node_page(struct f2fs_sb_info *, struct page *,
|
|
struct f2fs_summary *, struct node_info *, block_t);
|
|
bool 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 f2fs_balance_fs(struct f2fs_sb_info *);
|
|
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);
|
|
void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
|
|
void clear_prefree_segments(struct f2fs_sb_info *);
|
|
void discard_next_dnode(struct f2fs_sb_info *);
|
|
int npages_for_summary_flush(struct f2fs_sb_info *);
|
|
void allocate_new_segments(struct f2fs_sb_info *);
|
|
struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
|
|
void write_meta_page(struct f2fs_sb_info *, struct page *);
|
|
void write_node_page(struct f2fs_sb_info *, struct page *,
|
|
struct f2fs_io_info *, unsigned int, block_t, block_t *);
|
|
void write_data_page(struct page *, struct dnode_of_data *, block_t *,
|
|
struct f2fs_io_info *);
|
|
void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
|
|
void recover_data_page(struct f2fs_sb_info *, struct page *,
|
|
struct f2fs_summary *, block_t, block_t);
|
|
void rewrite_node_page(struct f2fs_sb_info *, struct page *,
|
|
struct f2fs_summary *, block_t, block_t);
|
|
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);
|
|
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_summary_block *,
|
|
int, unsigned int, int);
|
|
void flush_sit_entries(struct f2fs_sb_info *);
|
|
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
|
|
*/
|
|
struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
|
|
struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
|
|
int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
|
|
long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
|
|
int acquire_orphan_inode(struct f2fs_sb_info *);
|
|
void release_orphan_inode(struct f2fs_sb_info *);
|
|
void add_orphan_inode(struct f2fs_sb_info *, nid_t);
|
|
void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
|
|
void recover_orphan_inodes(struct f2fs_sb_info *);
|
|
int get_valid_checkpoint(struct f2fs_sb_info *);
|
|
void set_dirty_dir_page(struct inode *, struct page *);
|
|
void add_dirty_dir_inode(struct inode *);
|
|
void remove_dirty_dir_inode(struct inode *);
|
|
void sync_dirty_dir_inodes(struct f2fs_sb_info *);
|
|
void write_checkpoint(struct f2fs_sb_info *, bool);
|
|
void init_orphan_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);
|
|
int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
|
|
void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
|
|
struct f2fs_io_info *);
|
|
int reserve_new_block(struct dnode_of_data *);
|
|
int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
|
|
void update_extent_cache(block_t, struct dnode_of_data *);
|
|
struct page *find_data_page(struct inode *, pgoff_t, bool);
|
|
struct page *get_lock_data_page(struct inode *, pgoff_t);
|
|
struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
|
|
int do_write_data_page(struct page *, struct f2fs_io_info *);
|
|
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
|
|
|
|
/*
|
|
* 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 f2fs_inode_info *);
|
|
int f2fs_gc(struct f2fs_sb_info *);
|
|
void build_gc_manager(struct f2fs_sb_info *);
|
|
int __init create_gc_caches(void);
|
|
void destroy_gc_caches(void);
|
|
|
|
/*
|
|
* recovery.c
|
|
*/
|
|
int recover_fsync_data(struct f2fs_sb_info *);
|
|
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;
|
|
struct mutex stat_lock;
|
|
int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
|
|
int main_area_segs, main_area_sections, main_area_zones;
|
|
int hit_ext, total_ext;
|
|
int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
|
|
int nats, sits, fnids;
|
|
int total_count, utilization;
|
|
int bg_gc, inline_inode;
|
|
unsigned int valid_count, valid_node_count, valid_inode_count;
|
|
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;
|
|
int tot_segs, node_segs, data_segs, free_segs, free_secs;
|
|
int tot_blks, data_blks, 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 base_mem, cache_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_call_count(si) ((si)->call_count++)
|
|
#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
|
|
#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
|
|
#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
|
|
#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
|
|
#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
|
|
#define stat_inc_inline_inode(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_data(inode)) \
|
|
((F2FS_SB(inode->i_sb))->inline_inode++); \
|
|
} while (0)
|
|
#define stat_dec_inline_inode(inode) \
|
|
do { \
|
|
if (f2fs_has_inline_data(inode)) \
|
|
((F2FS_SB(inode->i_sb))->inline_inode--); \
|
|
} 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_seg_count(sbi, type) \
|
|
do { \
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
|
|
(si)->tot_segs++; \
|
|
if (type == SUM_TYPE_DATA) \
|
|
si->data_segs++; \
|
|
else \
|
|
si->node_segs++; \
|
|
} while (0)
|
|
|
|
#define stat_inc_tot_blk_count(si, blks) \
|
|
(si->tot_blks += (blks))
|
|
|
|
#define stat_inc_data_blk_count(sbi, blks) \
|
|
do { \
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
|
|
stat_inc_tot_blk_count(si, blks); \
|
|
si->data_blks += (blks); \
|
|
} while (0)
|
|
|
|
#define stat_inc_node_blk_count(sbi, blks) \
|
|
do { \
|
|
struct f2fs_stat_info *si = F2FS_STAT(sbi); \
|
|
stat_inc_tot_blk_count(si, blks); \
|
|
si->node_blks += (blks); \
|
|
} while (0)
|
|
|
|
int f2fs_build_stats(struct f2fs_sb_info *);
|
|
void f2fs_destroy_stats(struct f2fs_sb_info *);
|
|
void __init f2fs_create_root_stats(void);
|
|
void f2fs_destroy_root_stats(void);
|
|
#else
|
|
#define stat_inc_cp_count(si)
|
|
#define stat_inc_call_count(si)
|
|
#define stat_inc_bggc_count(si)
|
|
#define stat_inc_dirty_dir(sbi)
|
|
#define stat_dec_dirty_dir(sbi)
|
|
#define stat_inc_total_hit(sb)
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#define stat_inc_read_hit(sb)
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#define stat_inc_inline_inode(inode)
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#define stat_dec_inline_inode(inode)
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#define stat_inc_seg_type(sbi, curseg)
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#define stat_inc_block_count(sbi, curseg)
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#define stat_inc_seg_count(si, type)
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#define stat_inc_tot_blk_count(si, blks)
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#define stat_inc_data_blk_count(si, blks)
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#define stat_inc_node_blk_count(sbi, blks)
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static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
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static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
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static inline void __init f2fs_create_root_stats(void) { }
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static inline void f2fs_destroy_root_stats(void) { }
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#endif
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extern const struct file_operations f2fs_dir_operations;
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extern const struct file_operations f2fs_file_operations;
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extern const struct inode_operations f2fs_file_inode_operations;
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extern const struct address_space_operations f2fs_dblock_aops;
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extern const struct address_space_operations f2fs_node_aops;
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extern const struct address_space_operations f2fs_meta_aops;
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extern const struct inode_operations f2fs_dir_inode_operations;
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extern const struct inode_operations f2fs_symlink_inode_operations;
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extern const struct inode_operations f2fs_special_inode_operations;
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/*
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* inline.c
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*/
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bool f2fs_may_inline(struct inode *);
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int f2fs_read_inline_data(struct inode *, struct page *);
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int f2fs_convert_inline_data(struct inode *, pgoff_t);
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int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
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void truncate_inline_data(struct inode *, u64);
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int recover_inline_data(struct inode *, struct page *);
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#endif
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