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fs/f2fs/segment.h
25.8 KB
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// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* fs/f2fs/segment.h * * Copyright (c) 2012 Samsung Electronics Co., Ltd. * http://www.samsung.com/ |
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*/ |
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#include <linux/blkdev.h> |
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#include <linux/backing-dev.h> |
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/* constant macro */ #define NULL_SEGNO ((unsigned int)(~0)) |
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#define NULL_SECNO ((unsigned int)(~0)) |
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#define DEF_RECLAIM_PREFREE_SEGMENTS 5 /* 5% over total segments */ |
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#define DEF_MAX_RECLAIM_PREFREE_SEGMENTS 4096 /* 8GB in maximum */ |
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#define F2FS_MIN_SEGMENTS 9 /* SB + 2 (CP + SIT + NAT) + SSA + MAIN */ |
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/* L: Logical segment # in volume, R: Relative segment # in main area */ |
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#define GET_L2R_SEGNO(free_i, segno) ((segno) - (free_i)->start_segno) #define GET_R2L_SEGNO(free_i, segno) ((segno) + (free_i)->start_segno) |
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#define IS_DATASEG(t) ((t) <= CURSEG_COLD_DATA) #define IS_NODESEG(t) ((t) >= CURSEG_HOT_NODE) |
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#define IS_HOT(t) ((t) == CURSEG_HOT_NODE || (t) == CURSEG_HOT_DATA) #define IS_WARM(t) ((t) == CURSEG_WARM_NODE || (t) == CURSEG_WARM_DATA) #define IS_COLD(t) ((t) == CURSEG_COLD_NODE || (t) == CURSEG_COLD_DATA) |
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#define IS_CURSEG(sbi, seg) \ |
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(((seg) == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno) || \ ((seg) == CURSEG_I(sbi, CURSEG_WARM_DATA)->segno) || \ ((seg) == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno) || \ ((seg) == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno) || \ ((seg) == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno) || \ ((seg) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno)) |
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#define IS_CURSEC(sbi, secno) \ |
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(((secno) == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno / \ (sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_WARM_DATA)->segno / \ (sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno / \ (sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno / \ (sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno / \ (sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \ (sbi)->segs_per_sec)) \ |
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#define MAIN_BLKADDR(sbi) \ (SM_I(sbi) ? SM_I(sbi)->main_blkaddr : \ le32_to_cpu(F2FS_RAW_SUPER(sbi)->main_blkaddr)) #define SEG0_BLKADDR(sbi) \ (SM_I(sbi) ? SM_I(sbi)->seg0_blkaddr : \ le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment0_blkaddr)) |
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#define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments) |
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#define MAIN_SECS(sbi) ((sbi)->total_sections) |
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#define TOTAL_SEGS(sbi) \ (SM_I(sbi) ? SM_I(sbi)->segment_count : \ le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count)) |
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#define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << (sbi)->log_blocks_per_seg) |
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#define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi)) |
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#define SEGMENT_SIZE(sbi) (1ULL << ((sbi)->log_blocksize + \ (sbi)->log_blocks_per_seg)) |
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#define START_BLOCK(sbi, segno) (SEG0_BLKADDR(sbi) + \ |
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(GET_R2L_SEGNO(FREE_I(sbi), segno) << (sbi)->log_blocks_per_seg)) |
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#define NEXT_FREE_BLKADDR(sbi, curseg) \ |
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(START_BLOCK(sbi, (curseg)->segno) + (curseg)->next_blkoff) |
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#define GET_SEGOFF_FROM_SEG0(sbi, blk_addr) ((blk_addr) - SEG0_BLKADDR(sbi)) |
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#define GET_SEGNO_FROM_SEG0(sbi, blk_addr) \ |
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(GET_SEGOFF_FROM_SEG0(sbi, blk_addr) >> (sbi)->log_blocks_per_seg) |
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#define GET_BLKOFF_FROM_SEG0(sbi, blk_addr) \ |
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(GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & ((sbi)->blocks_per_seg - 1)) |
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#define GET_SEGNO(sbi, blk_addr) \ |
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((!__is_valid_data_blkaddr(blk_addr)) ? \ |
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NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi), \ GET_SEGNO_FROM_SEG0(sbi, blk_addr))) |
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#define BLKS_PER_SEC(sbi) \ ((sbi)->segs_per_sec * (sbi)->blocks_per_seg) #define GET_SEC_FROM_SEG(sbi, segno) \ |
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((segno) / (sbi)->segs_per_sec) |
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#define GET_SEG_FROM_SEC(sbi, secno) \ |
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((secno) * (sbi)->segs_per_sec) |
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#define GET_ZONE_FROM_SEC(sbi, secno) \ ((secno) / (sbi)->secs_per_zone) #define GET_ZONE_FROM_SEG(sbi, segno) \ GET_ZONE_FROM_SEC(sbi, GET_SEC_FROM_SEG(sbi, segno)) |
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#define GET_SUM_BLOCK(sbi, segno) \ |
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((sbi)->sm_info->ssa_blkaddr + (segno)) |
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#define GET_SUM_TYPE(footer) ((footer)->entry_type) |
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#define SET_SUM_TYPE(footer, type) ((footer)->entry_type = (type)) |
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#define SIT_ENTRY_OFFSET(sit_i, segno) \ |
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((segno) % (sit_i)->sents_per_block) |
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#define SIT_BLOCK_OFFSET(segno) \ |
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((segno) / SIT_ENTRY_PER_BLOCK) |
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#define START_SEGNO(segno) \ (SIT_BLOCK_OFFSET(segno) * SIT_ENTRY_PER_BLOCK) |
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#define SIT_BLK_CNT(sbi) \ |
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DIV_ROUND_UP(MAIN_SEGS(sbi), SIT_ENTRY_PER_BLOCK) |
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#define f2fs_bitmap_size(nr) \ (BITS_TO_LONGS(nr) * sizeof(unsigned long)) |
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#define SECTOR_FROM_BLOCK(blk_addr) \ (((sector_t)blk_addr) << F2FS_LOG_SECTORS_PER_BLOCK) #define SECTOR_TO_BLOCK(sectors) \ |
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((sectors) >> F2FS_LOG_SECTORS_PER_BLOCK) |
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/* * indicate a block allocation direction: RIGHT and LEFT. * RIGHT means allocating new sections towards the end of volume. * LEFT means the opposite direction. */ enum { ALLOC_RIGHT = 0, ALLOC_LEFT }; /* * In the victim_sel_policy->alloc_mode, there are two block allocation modes. * LFS writes data sequentially with cleaning operations. * SSR (Slack Space Recycle) reuses obsolete space without cleaning operations. */ enum { LFS = 0, SSR }; /* * In the victim_sel_policy->gc_mode, there are two gc, aka cleaning, modes. * GC_CB is based on cost-benefit algorithm. * GC_GREEDY is based on greedy algorithm. */ enum { GC_CB = 0, |
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GC_GREEDY, ALLOC_NEXT, FLUSH_DEVICE, MAX_GC_POLICY, |
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}; /* * BG_GC means the background cleaning job. * FG_GC means the on-demand cleaning job. |
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* FORCE_FG_GC means on-demand cleaning job in background. |
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*/ enum { BG_GC = 0, |
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FG_GC, FORCE_FG_GC, |
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}; /* for a function parameter to select a victim segment */ struct victim_sel_policy { int alloc_mode; /* LFS or SSR */ int gc_mode; /* GC_CB or GC_GREEDY */ unsigned long *dirty_segmap; /* dirty segment bitmap */ |
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unsigned int max_search; /* maximum # of segments to search */ |
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unsigned int offset; /* last scanned bitmap offset */ unsigned int ofs_unit; /* bitmap search unit */ unsigned int min_cost; /* minimum cost */ unsigned int min_segno; /* segment # having min. cost */ }; struct seg_entry { |
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unsigned int type:6; /* segment type like CURSEG_XXX_TYPE */ unsigned int valid_blocks:10; /* # of valid blocks */ unsigned int ckpt_valid_blocks:10; /* # of valid blocks last cp */ unsigned int padding:6; /* padding */ |
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unsigned char *cur_valid_map; /* validity bitmap of blocks */ |
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#ifdef CONFIG_F2FS_CHECK_FS unsigned char *cur_valid_map_mir; /* mirror of current valid bitmap */ #endif |
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/* * # of valid blocks and the validity bitmap stored in the the last * checkpoint pack. This information is used by the SSR mode. */ |
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unsigned char *ckpt_valid_map; /* validity bitmap of blocks last cp */ |
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unsigned char *discard_map; |
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unsigned long long mtime; /* modification time of the segment */ }; struct sec_entry { unsigned int valid_blocks; /* # of valid blocks in a section */ }; struct segment_allocation { void (*allocate_segment)(struct f2fs_sb_info *, int, bool); }; |
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#define MAX_SKIP_GC_COUNT 16 |
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struct inmem_pages { struct list_head list; struct page *page; |
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block_t old_addr; /* for revoking when fail to commit */ |
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}; |
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struct sit_info { const struct segment_allocation *s_ops; block_t sit_base_addr; /* start block address of SIT area */ block_t sit_blocks; /* # of blocks used by SIT area */ block_t written_valid_blocks; /* # of valid blocks in main area */ |
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char *bitmap; /* all bitmaps pointer */ |
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char *sit_bitmap; /* SIT bitmap pointer */ |
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#ifdef CONFIG_F2FS_CHECK_FS char *sit_bitmap_mir; /* SIT bitmap mirror */ |
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/* bitmap of segments to be ignored by GC in case of errors */ unsigned long *invalid_segmap; |
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#endif |
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unsigned int bitmap_size; /* SIT bitmap size */ |
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unsigned long *tmp_map; /* bitmap for temporal use */ |
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unsigned long *dirty_sentries_bitmap; /* bitmap for dirty sentries */ unsigned int dirty_sentries; /* # of dirty sentries */ unsigned int sents_per_block; /* # of SIT entries per block */ |
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struct rw_semaphore sentry_lock; /* to protect SIT cache */ |
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struct seg_entry *sentries; /* SIT segment-level cache */ struct sec_entry *sec_entries; /* SIT section-level cache */ /* for cost-benefit algorithm in cleaning procedure */ unsigned long long elapsed_time; /* elapsed time after mount */ unsigned long long mounted_time; /* mount time */ unsigned long long min_mtime; /* min. modification time */ unsigned long long max_mtime; /* max. modification time */ |
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unsigned int last_victim[MAX_GC_POLICY]; /* last victim segment # */ |
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}; struct free_segmap_info { unsigned int start_segno; /* start segment number logically */ unsigned int free_segments; /* # of free segments */ unsigned int free_sections; /* # of free sections */ |
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spinlock_t segmap_lock; /* free segmap lock */ |
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unsigned long *free_segmap; /* free segment bitmap */ unsigned long *free_secmap; /* free section bitmap */ }; /* Notice: The order of dirty type is same with CURSEG_XXX in f2fs.h */ enum dirty_type { DIRTY_HOT_DATA, /* dirty segments assigned as hot data logs */ DIRTY_WARM_DATA, /* dirty segments assigned as warm data logs */ DIRTY_COLD_DATA, /* dirty segments assigned as cold data logs */ DIRTY_HOT_NODE, /* dirty segments assigned as hot node logs */ DIRTY_WARM_NODE, /* dirty segments assigned as warm node logs */ DIRTY_COLD_NODE, /* dirty segments assigned as cold node logs */ DIRTY, /* to count # of dirty segments */ PRE, /* to count # of entirely obsolete segments */ NR_DIRTY_TYPE }; struct dirty_seglist_info { const struct victim_selection *v_ops; /* victim selction operation */ unsigned long *dirty_segmap[NR_DIRTY_TYPE]; struct mutex seglist_lock; /* lock for segment bitmaps */ int nr_dirty[NR_DIRTY_TYPE]; /* # of dirty segments */ |
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unsigned long *victim_secmap; /* background GC victims */ |
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}; /* victim selection function for cleaning and SSR */ struct victim_selection { int (*get_victim)(struct f2fs_sb_info *, unsigned int *, int, int, char); }; /* for active log information */ struct curseg_info { struct mutex curseg_mutex; /* lock for consistency */ struct f2fs_summary_block *sum_blk; /* cached summary block */ |
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struct rw_semaphore journal_rwsem; /* protect journal area */ struct f2fs_journal *journal; /* cached journal info */ |
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unsigned char alloc_type; /* current allocation type */ unsigned int segno; /* current segment number */ unsigned short next_blkoff; /* next block offset to write */ unsigned int zone; /* current zone number */ unsigned int next_segno; /* preallocated segment */ }; |
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struct sit_entry_set { struct list_head set_list; /* link with all sit sets */ unsigned int start_segno; /* start segno of sits in set */ unsigned int entry_cnt; /* the # of sit entries in set */ }; |
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/* * inline functions */ static inline struct curseg_info *CURSEG_I(struct f2fs_sb_info *sbi, int type) { |
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if (type == CURSEG_COLD_DATA_PINNED) type = CURSEG_COLD_DATA; |
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return (struct curseg_info *)(SM_I(sbi)->curseg_array + type); } static inline struct seg_entry *get_seg_entry(struct f2fs_sb_info *sbi, unsigned int segno) { struct sit_info *sit_i = SIT_I(sbi); return &sit_i->sentries[segno]; } static inline struct sec_entry *get_sec_entry(struct f2fs_sb_info *sbi, unsigned int segno) { struct sit_info *sit_i = SIT_I(sbi); |
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return &sit_i->sec_entries[GET_SEC_FROM_SEG(sbi, segno)]; |
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} static inline unsigned int get_valid_blocks(struct f2fs_sb_info *sbi, |
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unsigned int segno, bool use_section) |
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{ /* * In order to get # of valid blocks in a section instantly from many * segments, f2fs manages two counting structures separately. */ |
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if (use_section && __is_large_section(sbi)) |
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return get_sec_entry(sbi, segno)->valid_blocks; else return get_seg_entry(sbi, segno)->valid_blocks; } |
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static inline unsigned int get_ckpt_valid_blocks(struct f2fs_sb_info *sbi, unsigned int segno) { return get_seg_entry(sbi, segno)->ckpt_valid_blocks; } |
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static inline void seg_info_from_raw_sit(struct seg_entry *se, struct f2fs_sit_entry *rs) { se->valid_blocks = GET_SIT_VBLOCKS(rs); se->ckpt_valid_blocks = GET_SIT_VBLOCKS(rs); memcpy(se->cur_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE); memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE); |
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#ifdef CONFIG_F2FS_CHECK_FS memcpy(se->cur_valid_map_mir, rs->valid_map, SIT_VBLOCK_MAP_SIZE); #endif |
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se->type = GET_SIT_TYPE(rs); se->mtime = le64_to_cpu(rs->mtime); } |
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static inline void __seg_info_to_raw_sit(struct seg_entry *se, |
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struct f2fs_sit_entry *rs) { unsigned short raw_vblocks = (se->type << SIT_VBLOCKS_SHIFT) | se->valid_blocks; rs->vblocks = cpu_to_le16(raw_vblocks); memcpy(rs->valid_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE); |
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rs->mtime = cpu_to_le64(se->mtime); } static inline void seg_info_to_sit_page(struct f2fs_sb_info *sbi, struct page *page, unsigned int start) { struct f2fs_sit_block *raw_sit; struct seg_entry *se; struct f2fs_sit_entry *rs; unsigned int end = min(start + SIT_ENTRY_PER_BLOCK, (unsigned long)MAIN_SEGS(sbi)); int i; raw_sit = (struct f2fs_sit_block *)page_address(page); |
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memset(raw_sit, 0, PAGE_SIZE); |
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for (i = 0; i < end - start; i++) { rs = &raw_sit->entries[i]; se = get_seg_entry(sbi, start + i); __seg_info_to_raw_sit(se, rs); } } static inline void seg_info_to_raw_sit(struct seg_entry *se, struct f2fs_sit_entry *rs) { __seg_info_to_raw_sit(se, rs); |
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memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE); se->ckpt_valid_blocks = se->valid_blocks; |
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} static inline unsigned int find_next_inuse(struct free_segmap_info *free_i, unsigned int max, unsigned int segno) { unsigned int ret; |
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spin_lock(&free_i->segmap_lock); |
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ret = find_next_bit(free_i->free_segmap, max, segno); |
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spin_unlock(&free_i->segmap_lock); |
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return ret; } static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno) { struct free_segmap_info *free_i = FREE_I(sbi); |
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unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno); |
39a53e0ce f2fs: add superbl... |
398 |
unsigned int next; |
1a118ccfd f2fs: use spinloc... |
399 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
400 401 |
clear_bit(segno, free_i->free_segmap); free_i->free_segments++; |
7fd97019b f2fs: reduce sear... |
402 403 |
next = find_next_bit(free_i->free_segmap, start_segno + sbi->segs_per_sec, start_segno); |
39a53e0ce f2fs: add superbl... |
404 405 406 407 |
if (next >= start_segno + sbi->segs_per_sec) { clear_bit(secno, free_i->free_secmap); free_i->free_sections++; } |
1a118ccfd f2fs: use spinloc... |
408 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
409 410 411 412 413 414 |
} static inline void __set_inuse(struct f2fs_sb_info *sbi, unsigned int segno) { struct free_segmap_info *free_i = FREE_I(sbi); |
4ddb1a4d4 f2fs: clean up so... |
415 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); |
39a53e0ce f2fs: add superbl... |
416 417 418 419 420 421 422 423 424 425 |
set_bit(segno, free_i->free_segmap); free_i->free_segments--; if (!test_and_set_bit(secno, free_i->free_secmap)) free_i->free_sections--; } static inline void __set_test_and_free(struct f2fs_sb_info *sbi, unsigned int segno) { struct free_segmap_info *free_i = FREE_I(sbi); |
4ddb1a4d4 f2fs: clean up so... |
426 427 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno); |
39a53e0ce f2fs: add superbl... |
428 |
unsigned int next; |
1a118ccfd f2fs: use spinloc... |
429 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
430 431 |
if (test_and_clear_bit(segno, free_i->free_segmap)) { free_i->free_segments++; |
3611ce991 f2fs: do not set ... |
432 433 |
if (IS_CURSEC(sbi, secno)) goto skip_free; |
f1121ab0b f2fs: reduce sear... |
434 435 |
next = find_next_bit(free_i->free_segmap, start_segno + sbi->segs_per_sec, start_segno); |
39a53e0ce f2fs: add superbl... |
436 437 438 439 440 |
if (next >= start_segno + sbi->segs_per_sec) { if (test_and_clear_bit(secno, free_i->free_secmap)) free_i->free_sections++; } } |
3611ce991 f2fs: do not set ... |
441 |
skip_free: |
1a118ccfd f2fs: use spinloc... |
442 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
443 444 445 446 447 448 |
} static inline void __set_test_and_inuse(struct f2fs_sb_info *sbi, unsigned int segno) { struct free_segmap_info *free_i = FREE_I(sbi); |
4ddb1a4d4 f2fs: clean up so... |
449 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); |
1a118ccfd f2fs: use spinloc... |
450 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
451 452 453 454 455 |
if (!test_and_set_bit(segno, free_i->free_segmap)) { free_i->free_segments--; if (!test_and_set_bit(secno, free_i->free_secmap)) free_i->free_sections--; } |
1a118ccfd f2fs: use spinloc... |
456 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
457 458 459 460 461 462 |
} static inline void get_sit_bitmap(struct f2fs_sb_info *sbi, void *dst_addr) { struct sit_info *sit_i = SIT_I(sbi); |
ae27d62e6 f2fs: check in-me... |
463 464 465 466 467 468 |
#ifdef CONFIG_F2FS_CHECK_FS if (memcmp(sit_i->sit_bitmap, sit_i->sit_bitmap_mir, sit_i->bitmap_size)) f2fs_bug_on(sbi, 1); #endif |
39a53e0ce f2fs: add superbl... |
469 470 471 472 473 |
memcpy(dst_addr, sit_i->sit_bitmap, sit_i->bitmap_size); } static inline block_t written_block_count(struct f2fs_sb_info *sbi) { |
8b8343fa9 f2fs: implement a... |
474 |
return SIT_I(sbi)->written_valid_blocks; |
39a53e0ce f2fs: add superbl... |
475 476 477 478 |
} static inline unsigned int free_segments(struct f2fs_sb_info *sbi) { |
8b8343fa9 f2fs: implement a... |
479 |
return FREE_I(sbi)->free_segments; |
39a53e0ce f2fs: add superbl... |
480 481 482 483 484 485 486 487 488 |
} static inline int reserved_segments(struct f2fs_sb_info *sbi) { return SM_I(sbi)->reserved_segments; } static inline unsigned int free_sections(struct f2fs_sb_info *sbi) { |
8b8343fa9 f2fs: implement a... |
489 |
return FREE_I(sbi)->free_sections; |
39a53e0ce f2fs: add superbl... |
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 |
} static inline unsigned int prefree_segments(struct f2fs_sb_info *sbi) { return DIRTY_I(sbi)->nr_dirty[PRE]; } static inline unsigned int dirty_segments(struct f2fs_sb_info *sbi) { return DIRTY_I(sbi)->nr_dirty[DIRTY_HOT_DATA] + DIRTY_I(sbi)->nr_dirty[DIRTY_WARM_DATA] + DIRTY_I(sbi)->nr_dirty[DIRTY_COLD_DATA] + DIRTY_I(sbi)->nr_dirty[DIRTY_HOT_NODE] + DIRTY_I(sbi)->nr_dirty[DIRTY_WARM_NODE] + DIRTY_I(sbi)->nr_dirty[DIRTY_COLD_NODE]; } static inline int overprovision_segments(struct f2fs_sb_info *sbi) { return SM_I(sbi)->ovp_segments; } |
39a53e0ce f2fs: add superbl... |
511 512 |
static inline int reserved_sections(struct f2fs_sb_info *sbi) { |
4ddb1a4d4 f2fs: clean up so... |
513 |
return GET_SEC_FROM_SEG(sbi, (unsigned int)reserved_segments(sbi)); |
39a53e0ce f2fs: add superbl... |
514 |
} |
bf34c93d2 f2fs: check curse... |
515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 |
static inline bool has_curseg_enough_space(struct f2fs_sb_info *sbi) { unsigned int node_blocks = get_pages(sbi, F2FS_DIRTY_NODES) + get_pages(sbi, F2FS_DIRTY_DENTS); unsigned int dent_blocks = get_pages(sbi, F2FS_DIRTY_DENTS); unsigned int segno, left_blocks; int i; /* check current node segment */ for (i = CURSEG_HOT_NODE; i <= CURSEG_COLD_NODE; i++) { segno = CURSEG_I(sbi, i)->segno; left_blocks = sbi->blocks_per_seg - get_seg_entry(sbi, segno)->ckpt_valid_blocks; if (node_blocks > left_blocks) return false; } /* check current data segment */ segno = CURSEG_I(sbi, CURSEG_HOT_DATA)->segno; left_blocks = sbi->blocks_per_seg - get_seg_entry(sbi, segno)->ckpt_valid_blocks; if (dent_blocks > left_blocks) return false; return true; } |
7f3037a5e f2fs: check free_... |
541 542 |
static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed, int needed) |
39a53e0ce f2fs: add superbl... |
543 |
{ |
5ac206cf4 f2fs: make an acc... |
544 545 |
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); |
b9610bdfc f2fs: count dirty... |
546 |
int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); |
0f18b462b f2fs: flush inode... |
547 |
|
caf0047e7 f2fs: merge flags... |
548 |
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
029cd28c1 f2fs: fix equatio... |
549 |
return false; |
bf34c93d2 f2fs: check curse... |
550 551 552 |
if (free_sections(sbi) + freed == reserved_sections(sbi) + needed && has_curseg_enough_space(sbi)) return false; |
7f3037a5e f2fs: check free_... |
553 |
return (free_sections(sbi) + freed) <= |
b9610bdfc f2fs: count dirty... |
554 555 |
(node_secs + 2 * dent_secs + imeta_secs + reserved_sections(sbi) + needed); |
39a53e0ce f2fs: add superbl... |
556 |
} |
00e09c0bc f2fs: enhance f2f... |
557 |
static inline bool f2fs_is_checkpoint_ready(struct f2fs_sb_info *sbi) |
4354994f0 f2fs: checkpoint ... |
558 559 |
{ if (likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
00e09c0bc f2fs: enhance f2f... |
560 |
return true; |
4354994f0 f2fs: checkpoint ... |
561 |
if (likely(!has_not_enough_free_secs(sbi, 0, 0))) |
00e09c0bc f2fs: enhance f2f... |
562 563 |
return true; return false; |
4354994f0 f2fs: checkpoint ... |
564 |
} |
81eb8d6e2 f2fs: reclaim pre... |
565 566 |
static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi) { |
6c311ec6c f2fs: clean check... |
567 |
return prefree_segments(sbi) > SM_I(sbi)->rec_prefree_segments; |
81eb8d6e2 f2fs: reclaim pre... |
568 |
} |
39a53e0ce f2fs: add superbl... |
569 570 |
static inline int utilization(struct f2fs_sb_info *sbi) { |
6c311ec6c f2fs: clean check... |
571 572 |
return div_u64((u64)valid_user_blocks(sbi) * 100, sbi->user_block_count); |
39a53e0ce f2fs: add superbl... |
573 574 575 576 |
} /* * Sometimes f2fs may be better to drop out-of-place update policy. |
216fbd644 f2fs: introduce s... |
577 578 579 580 581 582 583 |
* And, users can control the policy through sysfs entries. * There are five policies with triggering conditions as follows. * F2FS_IPU_FORCE - all the time, * F2FS_IPU_SSR - if SSR mode is activated, * F2FS_IPU_UTIL - if FS utilization is over threashold, * F2FS_IPU_SSR_UTIL - if SSR mode is activated and FS utilization is over * threashold, |
c1ce1b02b f2fs: give an opt... |
584 585 |
* F2FS_IPU_FSYNC - activated in fsync path only for high performance flash * storages. IPU will be triggered only if the # of dirty |
d7b0a23d8 f2fs: update f2fs... |
586 587 |
* pages over min_fsync_blocks. (=default option) * F2FS_IPU_ASYNC - do IPU given by asynchronous write requests. |
0e7f41974 f2fs: add a way t... |
588 |
* F2FS_IPU_NOCACHE - disable IPU bio cache. |
d7b0a23d8 f2fs: update f2fs... |
589 |
* F2FS_IPUT_DISABLE - disable IPU. (=default option in LFS mode) |
39a53e0ce f2fs: add superbl... |
590 |
*/ |
216fbd644 f2fs: introduce s... |
591 |
#define DEF_MIN_IPU_UTIL 70 |
c1ce1b02b f2fs: give an opt... |
592 |
#define DEF_MIN_FSYNC_BLOCKS 8 |
ef095d19e f2fs: write small... |
593 |
#define DEF_MIN_HOT_BLOCKS 16 |
216fbd644 f2fs: introduce s... |
594 |
|
84b89e5d9 f2fs: add auto tu... |
595 |
#define SMALL_VOLUME_SEGMENTS (16 * 512) /* 16GB */ |
216fbd644 f2fs: introduce s... |
596 597 598 599 600 |
enum { F2FS_IPU_FORCE, F2FS_IPU_SSR, F2FS_IPU_UTIL, F2FS_IPU_SSR_UTIL, |
c1ce1b02b f2fs: give an opt... |
601 |
F2FS_IPU_FSYNC, |
04485987f f2fs: introduce a... |
602 |
F2FS_IPU_ASYNC, |
0e7f41974 f2fs: add a way t... |
603 |
F2FS_IPU_NOCACHE, |
216fbd644 f2fs: introduce s... |
604 |
}; |
39a53e0ce f2fs: add superbl... |
605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 |
static inline unsigned int curseg_segno(struct f2fs_sb_info *sbi, int type) { struct curseg_info *curseg = CURSEG_I(sbi, type); return curseg->segno; } static inline unsigned char curseg_alloc_type(struct f2fs_sb_info *sbi, int type) { struct curseg_info *curseg = CURSEG_I(sbi, type); return curseg->alloc_type; } static inline unsigned short curseg_blkoff(struct f2fs_sb_info *sbi, int type) { struct curseg_info *curseg = CURSEG_I(sbi, type); return curseg->next_blkoff; } static inline void check_seg_range(struct f2fs_sb_info *sbi, unsigned int segno) { |
7a04f64d4 f2fs: unify f2fs_... |
627 |
f2fs_bug_on(sbi, segno > TOTAL_SEGS(sbi) - 1); |
39a53e0ce f2fs: add superbl... |
628 |
} |
93770ab7a f2fs: introduce D... |
629 |
static inline void verify_fio_blkaddr(struct f2fs_io_info *fio) |
39a53e0ce f2fs: add superbl... |
630 |
{ |
0833721ec f2fs: check blkad... |
631 |
struct f2fs_sb_info *sbi = fio->sbi; |
93770ab7a f2fs: introduce D... |
632 633 634 635 636 |
if (__is_valid_data_blkaddr(fio->old_blkaddr)) verify_blkaddr(sbi, fio->old_blkaddr, __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC); verify_blkaddr(sbi, fio->new_blkaddr, __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC_ENHANCE); |
39a53e0ce f2fs: add superbl... |
637 638 639 |
} /* |
e1c420452 f2fs: fix typo |
640 |
* Summary block is always treated as an invalid block |
39a53e0ce f2fs: add superbl... |
641 |
*/ |
c39a1b348 f2fs: return erro... |
642 |
static inline int check_block_count(struct f2fs_sb_info *sbi, |
39a53e0ce f2fs: add superbl... |
643 644 |
int segno, struct f2fs_sit_entry *raw_sit) { |
44c60bf2b f2fs: check all o... |
645 |
bool is_valid = test_bit_le(0, raw_sit->valid_map) ? true : false; |
39a53e0ce f2fs: add superbl... |
646 |
int valid_blocks = 0; |
44c60bf2b f2fs: check all o... |
647 |
int cur_pos = 0, next_pos; |
39a53e0ce f2fs: add superbl... |
648 |
|
39a53e0ce f2fs: add superbl... |
649 |
/* check bitmap with valid block count */ |
44c60bf2b f2fs: check all o... |
650 651 652 653 654 655 656 657 658 659 660 661 662 |
do { if (is_valid) { next_pos = find_next_zero_bit_le(&raw_sit->valid_map, sbi->blocks_per_seg, cur_pos); valid_blocks += next_pos - cur_pos; } else next_pos = find_next_bit_le(&raw_sit->valid_map, sbi->blocks_per_seg, cur_pos); cur_pos = next_pos; is_valid = !is_valid; } while (cur_pos < sbi->blocks_per_seg); |
c39a1b348 f2fs: return erro... |
663 664 |
if (unlikely(GET_SIT_VBLOCKS(raw_sit) != valid_blocks)) { |
dcbb4c10e f2fs: introduce f... |
665 666 |
f2fs_err(sbi, "Mismatch valid blocks %d vs. %d", GET_SIT_VBLOCKS(raw_sit), valid_blocks); |
c39a1b348 f2fs: return erro... |
667 |
set_sbi_flag(sbi, SBI_NEED_FSCK); |
10f966bbf f2fs: use generic... |
668 |
return -EFSCORRUPTED; |
c39a1b348 f2fs: return erro... |
669 |
} |
e95bcdb2f f2fs: fix to do s... |
670 |
|
4c278394b f2fs: avoid a bui... |
671 |
/* check segment usage, and check boundary of a given segment number */ |
c39a1b348 f2fs: return erro... |
672 673 |
if (unlikely(GET_SIT_VBLOCKS(raw_sit) > sbi->blocks_per_seg || segno > TOTAL_SEGS(sbi) - 1)) { |
dcbb4c10e f2fs: introduce f... |
674 675 |
f2fs_err(sbi, "Wrong valid blocks %d or segno %u", GET_SIT_VBLOCKS(raw_sit), segno); |
c39a1b348 f2fs: return erro... |
676 |
set_sbi_flag(sbi, SBI_NEED_FSCK); |
10f966bbf f2fs: use generic... |
677 |
return -EFSCORRUPTED; |
c39a1b348 f2fs: return erro... |
678 679 |
} return 0; |
7a04f64d4 f2fs: unify f2fs_... |
680 |
} |
39a53e0ce f2fs: add superbl... |
681 682 683 684 685 |
static inline pgoff_t current_sit_addr(struct f2fs_sb_info *sbi, unsigned int start) { struct sit_info *sit_i = SIT_I(sbi); |
d3a14afd5 f2fs: remove unne... |
686 |
unsigned int offset = SIT_BLOCK_OFFSET(start); |
39a53e0ce f2fs: add superbl... |
687 688 689 |
block_t blk_addr = sit_i->sit_base_addr + offset; check_seg_range(sbi, start); |
ae27d62e6 f2fs: check in-me... |
690 691 692 693 694 |
#ifdef CONFIG_F2FS_CHECK_FS if (f2fs_test_bit(offset, sit_i->sit_bitmap) != f2fs_test_bit(offset, sit_i->sit_bitmap_mir)) f2fs_bug_on(sbi, 1); #endif |
39a53e0ce f2fs: add superbl... |
695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 |
/* calculate sit block address */ if (f2fs_test_bit(offset, sit_i->sit_bitmap)) blk_addr += sit_i->sit_blocks; return blk_addr; } static inline pgoff_t next_sit_addr(struct f2fs_sb_info *sbi, pgoff_t block_addr) { struct sit_info *sit_i = SIT_I(sbi); block_addr -= sit_i->sit_base_addr; if (block_addr < sit_i->sit_blocks) block_addr += sit_i->sit_blocks; else block_addr -= sit_i->sit_blocks; return block_addr + sit_i->sit_base_addr; } static inline void set_to_next_sit(struct sit_info *sit_i, unsigned int start) { |
d3a14afd5 f2fs: remove unne... |
717 |
unsigned int block_off = SIT_BLOCK_OFFSET(start); |
39a53e0ce f2fs: add superbl... |
718 |
|
c6ac4c0ec f2fs: introduce f... |
719 |
f2fs_change_bit(block_off, sit_i->sit_bitmap); |
ae27d62e6 f2fs: check in-me... |
720 721 722 |
#ifdef CONFIG_F2FS_CHECK_FS f2fs_change_bit(block_off, sit_i->sit_bitmap_mir); #endif |
39a53e0ce f2fs: add superbl... |
723 |
} |
a1f72ac2c f2fs: fix to upda... |
724 725 |
static inline unsigned long long get_mtime(struct f2fs_sb_info *sbi, bool base_time) |
39a53e0ce f2fs: add superbl... |
726 727 |
{ struct sit_info *sit_i = SIT_I(sbi); |
a1f72ac2c f2fs: fix to upda... |
728 |
time64_t diff, now = ktime_get_real_seconds(); |
48fbfe50f fs: f2fs: use kti... |
729 |
|
a1f72ac2c f2fs: fix to upda... |
730 731 732 733 734 735 736 737 738 739 740 |
if (now >= sit_i->mounted_time) return sit_i->elapsed_time + now - sit_i->mounted_time; /* system time is set to the past */ if (!base_time) { diff = sit_i->mounted_time - now; if (sit_i->elapsed_time >= diff) return sit_i->elapsed_time - diff; return 0; } return sit_i->elapsed_time; |
39a53e0ce f2fs: add superbl... |
741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 |
} static inline void set_summary(struct f2fs_summary *sum, nid_t nid, unsigned int ofs_in_node, unsigned char version) { sum->nid = cpu_to_le32(nid); sum->ofs_in_node = cpu_to_le16(ofs_in_node); sum->version = version; } static inline block_t start_sum_block(struct f2fs_sb_info *sbi) { return __start_cp_addr(sbi) + le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); } static inline block_t sum_blk_addr(struct f2fs_sb_info *sbi, int base, int type) { return __start_cp_addr(sbi) + le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_total_block_count) - (base + 1) + type; } |
5ec4e49f9 f2fs: change GC b... |
763 764 765 766 767 768 769 |
static inline bool sec_usage_check(struct f2fs_sb_info *sbi, unsigned int secno) { if (IS_CURSEC(sbi, secno) || (sbi->cur_victim_sec == secno)) return true; return false; } |
ac5d156c7 f2fs: modify the ... |
770 |
|
87d6f8909 f2fs: avoid small... |
771 772 773 774 |
/* * It is very important to gather dirty pages and write at once, so that we can * submit a big bio without interfering other data writes. * By default, 512 pages for directory data, |
727ebb091 f2fs: update the ... |
775 776 |
* 512 pages (2MB) * 8 for nodes, and * 256 pages * 8 for meta are set. |
87d6f8909 f2fs: avoid small... |
777 778 779 |
*/ static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type) { |
a88a341a7 writeback: move b... |
780 |
if (sbi->sb->s_bdi->wb.dirty_exceeded) |
510184c89 f2fs: do not skip... |
781 |
return 0; |
a12570232 Revert "f2fs: do ... |
782 783 784 |
if (type == DATA) return sbi->blocks_per_seg; else if (type == NODE) |
2c237ebaa f2fs: avoid writi... |
785 |
return 8 * sbi->blocks_per_seg; |
87d6f8909 f2fs: avoid small... |
786 |
else if (type == META) |
664ba972d f2fs: use BIO_MAX... |
787 |
return 8 * BIO_MAX_PAGES; |
87d6f8909 f2fs: avoid small... |
788 789 790 |
else return 0; } |
50c8cdb35 f2fs: introduce n... |
791 792 793 794 795 796 797 798 799 800 801 802 803 |
/* * When writing pages, it'd better align nr_to_write for segment size. */ static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type, struct writeback_control *wbc) { long nr_to_write, desired; if (wbc->sync_mode != WB_SYNC_NONE) return 0; nr_to_write = wbc->nr_to_write; |
664ba972d f2fs: use BIO_MAX... |
804 |
desired = BIO_MAX_PAGES; |
28ea6162e f2fs: do not skip... |
805 |
if (type == NODE) |
664ba972d f2fs: use BIO_MAX... |
806 |
desired <<= 1; |
50c8cdb35 f2fs: introduce n... |
807 808 809 810 |
wbc->nr_to_write = desired; return desired - nr_to_write; } |
01983c715 f2fs: wake up dis... |
811 812 813 814 815 816 817 818 819 820 821 |
static inline void wake_up_discard_thread(struct f2fs_sb_info *sbi, bool force) { struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; bool wakeup = false; int i; if (force) goto wake_up; mutex_lock(&dcc->cmd_lock); |
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for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { if (i + 1 < dcc->discard_granularity) break; |
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if (!list_empty(&dcc->pend_list[i])) { wakeup = true; break; } } mutex_unlock(&dcc->cmd_lock); |
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if (!wakeup || !is_idle(sbi, DISCARD_TIME)) |
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return; wake_up: dcc->discard_wake = 1; wake_up_interruptible_all(&dcc->discard_wait_queue); } |