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fs/f2fs/segment.h
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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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#define F2FS_MIN_META_SEGMENTS 8 /* SB + 2 (CP + SIT + NAT) + SSA */ |
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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) |
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#define IS_NODESEG(t) ((t) >= CURSEG_HOT_NODE && (t) <= CURSEG_COLD_NODE) |
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static inline void sanity_check_seg_type(struct f2fs_sb_info *sbi, unsigned short seg_type) { f2fs_bug_on(sbi, seg_type >= NR_PERSISTENT_LOG); } |
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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) || \ |
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((seg) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno) || \ |
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((seg) == CURSEG_I(sbi, CURSEG_COLD_DATA_PINNED)->segno) || \ ((seg) == CURSEG_I(sbi, CURSEG_ALL_DATA_ATGC)->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 / \ |
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(sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_COLD_DATA_PINNED)->segno / \ |
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(sbi)->segs_per_sec) || \ ((secno) == CURSEG_I(sbi, CURSEG_ALL_DATA_ATGC)->segno / \ |
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(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. |
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* AT_SSR (Age Threshold based Slack Space Recycle) merges fragments into * fragmented segment which has similar aging degree. |
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*/ enum { LFS = 0, |
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SSR, AT_SSR, |
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}; /* * 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. |
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* GC_AT is based on age-threshold algorithm. |
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*/ enum { GC_CB = 0, |
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GC_GREEDY, |
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GC_AT, |
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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 */ |
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unsigned long *dirty_bitmap; /* dirty segment/section bitmap */ unsigned int max_search; /* * maximum # of segments/sections * 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 */ |
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unsigned long long oldest_age; /* oldest age of segments having the same min cost */ |
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unsigned int min_segno; /* segment # having min. cost */ |
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unsigned long long age; /* mtime of GCed section*/ unsigned long long age_threshold;/* age threshold */ |
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}; 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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/* |
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* # of valid blocks and the validity bitmap stored in the last |
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* 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 long long dirty_min_mtime; /* rerange candidates in GC_AT */ unsigned long long dirty_max_mtime; /* rerange candidates in GC_AT */ |
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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]; |
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unsigned long *dirty_secmap; |
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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 *, |
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int, int, char, unsigned long long); |
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}; /* 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 */ |
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unsigned short seg_type; /* segment type like CURSEG_XXX_TYPE */ |
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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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bool inited; /* indicate inmem log is inited */ |
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}; |
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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) { 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); |
355e78913 f2fs: check in-me... |
367 368 369 |
#ifdef CONFIG_F2FS_CHECK_FS memcpy(se->cur_valid_map_mir, rs->valid_map, SIT_VBLOCK_MAP_SIZE); #endif |
39a53e0ce f2fs: add superbl... |
370 371 372 |
se->type = GET_SIT_TYPE(rs); se->mtime = le64_to_cpu(rs->mtime); } |
068c3cd85 f2fs: rebuild sit... |
373 |
static inline void __seg_info_to_raw_sit(struct seg_entry *se, |
39a53e0ce f2fs: add superbl... |
374 375 376 377 378 379 |
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); |
068c3cd85 f2fs: rebuild sit... |
380 381 382 383 384 385 386 387 388 389 390 391 392 393 |
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); |
81114baa8 f2fs: don't use G... |
394 |
memset(raw_sit, 0, PAGE_SIZE); |
068c3cd85 f2fs: rebuild sit... |
395 396 397 398 399 400 401 402 403 404 405 |
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); |
39a53e0ce f2fs: add superbl... |
406 407 |
memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE); se->ckpt_valid_blocks = se->valid_blocks; |
39a53e0ce f2fs: add superbl... |
408 409 410 411 412 413 |
} static inline unsigned int find_next_inuse(struct free_segmap_info *free_i, unsigned int max, unsigned int segno) { unsigned int ret; |
1a118ccfd f2fs: use spinloc... |
414 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
415 |
ret = find_next_bit(free_i->free_segmap, max, segno); |
1a118ccfd f2fs: use spinloc... |
416 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
417 418 419 420 421 422 |
return ret; } static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno) { struct free_segmap_info *free_i = FREE_I(sbi); |
4ddb1a4d4 f2fs: clean up so... |
423 424 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno); |
39a53e0ce f2fs: add superbl... |
425 |
unsigned int next; |
de881df97 f2fs: support zon... |
426 |
unsigned int usable_segs = f2fs_usable_segs_in_sec(sbi, segno); |
39a53e0ce f2fs: add superbl... |
427 |
|
1a118ccfd f2fs: use spinloc... |
428 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
429 430 |
clear_bit(segno, free_i->free_segmap); free_i->free_segments++; |
7fd97019b f2fs: reduce sear... |
431 432 |
next = find_next_bit(free_i->free_segmap, start_segno + sbi->segs_per_sec, start_segno); |
de881df97 f2fs: support zon... |
433 |
if (next >= start_segno + usable_segs) { |
39a53e0ce f2fs: add superbl... |
434 435 436 |
clear_bit(secno, free_i->free_secmap); free_i->free_sections++; } |
1a118ccfd f2fs: use spinloc... |
437 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
438 439 440 441 442 443 |
} 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... |
444 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); |
39a53e0ce f2fs: add superbl... |
445 446 447 448 449 450 451 |
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, |
d0b9e42ab f2fs: introduce i... |
452 |
unsigned int segno, bool inmem) |
39a53e0ce f2fs: add superbl... |
453 454 |
{ struct free_segmap_info *free_i = FREE_I(sbi); |
4ddb1a4d4 f2fs: clean up so... |
455 456 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno); |
39a53e0ce f2fs: add superbl... |
457 |
unsigned int next; |
de881df97 f2fs: support zon... |
458 |
unsigned int usable_segs = f2fs_usable_segs_in_sec(sbi, segno); |
39a53e0ce f2fs: add superbl... |
459 |
|
1a118ccfd f2fs: use spinloc... |
460 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
461 462 |
if (test_and_clear_bit(segno, free_i->free_segmap)) { free_i->free_segments++; |
d0b9e42ab f2fs: introduce i... |
463 |
if (!inmem && IS_CURSEC(sbi, secno)) |
3611ce991 f2fs: do not set ... |
464 |
goto skip_free; |
f1121ab0b f2fs: reduce sear... |
465 466 |
next = find_next_bit(free_i->free_segmap, start_segno + sbi->segs_per_sec, start_segno); |
de881df97 f2fs: support zon... |
467 |
if (next >= start_segno + usable_segs) { |
39a53e0ce f2fs: add superbl... |
468 469 470 471 |
if (test_and_clear_bit(secno, free_i->free_secmap)) free_i->free_sections++; } } |
3611ce991 f2fs: do not set ... |
472 |
skip_free: |
1a118ccfd f2fs: use spinloc... |
473 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
474 475 476 477 478 479 |
} 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... |
480 |
unsigned int secno = GET_SEC_FROM_SEG(sbi, segno); |
1a118ccfd f2fs: use spinloc... |
481 |
spin_lock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
482 483 484 485 486 |
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... |
487 |
spin_unlock(&free_i->segmap_lock); |
39a53e0ce f2fs: add superbl... |
488 489 490 491 492 493 |
} 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... |
494 495 496 497 498 499 |
#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... |
500 501 502 503 504 |
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... |
505 |
return SIT_I(sbi)->written_valid_blocks; |
39a53e0ce f2fs: add superbl... |
506 507 508 509 |
} static inline unsigned int free_segments(struct f2fs_sb_info *sbi) { |
8b8343fa9 f2fs: implement a... |
510 |
return FREE_I(sbi)->free_segments; |
39a53e0ce f2fs: add superbl... |
511 |
} |
4470eb287 f2fs: change retu... |
512 |
static inline unsigned int reserved_segments(struct f2fs_sb_info *sbi) |
39a53e0ce f2fs: add superbl... |
513 514 515 516 517 518 |
{ return SM_I(sbi)->reserved_segments; } static inline unsigned int free_sections(struct f2fs_sb_info *sbi) { |
8b8343fa9 f2fs: implement a... |
519 |
return FREE_I(sbi)->free_sections; |
39a53e0ce f2fs: add superbl... |
520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 |
} 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... |
541 542 |
static inline int reserved_sections(struct f2fs_sb_info *sbi) { |
4470eb287 f2fs: change retu... |
543 |
return GET_SEC_FROM_SEG(sbi, reserved_segments(sbi)); |
39a53e0ce f2fs: add superbl... |
544 |
} |
bf34c93d2 f2fs: check curse... |
545 546 547 548 549 550 551 552 553 554 555 |
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; |
de881df97 f2fs: support zon... |
556 557 |
left_blocks = f2fs_usable_blks_in_seg(sbi, segno) - get_seg_entry(sbi, segno)->ckpt_valid_blocks; |
bf34c93d2 f2fs: check curse... |
558 559 560 561 562 563 564 |
if (node_blocks > left_blocks) return false; } /* check current data segment */ segno = CURSEG_I(sbi, CURSEG_HOT_DATA)->segno; |
de881df97 f2fs: support zon... |
565 |
left_blocks = f2fs_usable_blks_in_seg(sbi, segno) - |
bf34c93d2 f2fs: check curse... |
566 567 568 569 570 |
get_seg_entry(sbi, segno)->ckpt_valid_blocks; if (dent_blocks > left_blocks) return false; return true; } |
7f3037a5e f2fs: check free_... |
571 572 |
static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed, int needed) |
39a53e0ce f2fs: add superbl... |
573 |
{ |
5ac206cf4 f2fs: make an acc... |
574 575 |
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); |
b9610bdfc f2fs: count dirty... |
576 |
int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); |
0f18b462b f2fs: flush inode... |
577 |
|
caf0047e7 f2fs: merge flags... |
578 |
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
029cd28c1 f2fs: fix equatio... |
579 |
return false; |
bf34c93d2 f2fs: check curse... |
580 581 582 |
if (free_sections(sbi) + freed == reserved_sections(sbi) + needed && has_curseg_enough_space(sbi)) return false; |
7f3037a5e f2fs: check free_... |
583 |
return (free_sections(sbi) + freed) <= |
b9610bdfc f2fs: count dirty... |
584 585 |
(node_secs + 2 * dent_secs + imeta_secs + reserved_sections(sbi) + needed); |
39a53e0ce f2fs: add superbl... |
586 |
} |
00e09c0bc f2fs: enhance f2f... |
587 |
static inline bool f2fs_is_checkpoint_ready(struct f2fs_sb_info *sbi) |
4354994f0 f2fs: checkpoint ... |
588 589 |
{ if (likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
00e09c0bc f2fs: enhance f2f... |
590 |
return true; |
4354994f0 f2fs: checkpoint ... |
591 |
if (likely(!has_not_enough_free_secs(sbi, 0, 0))) |
00e09c0bc f2fs: enhance f2f... |
592 593 |
return true; return false; |
4354994f0 f2fs: checkpoint ... |
594 |
} |
81eb8d6e2 f2fs: reclaim pre... |
595 596 |
static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi) { |
6c311ec6c f2fs: clean check... |
597 |
return prefree_segments(sbi) > SM_I(sbi)->rec_prefree_segments; |
81eb8d6e2 f2fs: reclaim pre... |
598 |
} |
39a53e0ce f2fs: add superbl... |
599 600 |
static inline int utilization(struct f2fs_sb_info *sbi) { |
6c311ec6c f2fs: clean check... |
601 602 |
return div_u64((u64)valid_user_blocks(sbi) * 100, sbi->user_block_count); |
39a53e0ce f2fs: add superbl... |
603 604 605 606 |
} /* * Sometimes f2fs may be better to drop out-of-place update policy. |
216fbd644 f2fs: introduce s... |
607 608 609 610 611 612 613 |
* 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... |
614 615 |
* 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... |
616 617 |
* pages over min_fsync_blocks. (=default option) * F2FS_IPU_ASYNC - do IPU given by asynchronous write requests. |
0e7f41974 f2fs: add a way t... |
618 |
* F2FS_IPU_NOCACHE - disable IPU bio cache. |
d7b0a23d8 f2fs: update f2fs... |
619 |
* F2FS_IPUT_DISABLE - disable IPU. (=default option in LFS mode) |
39a53e0ce f2fs: add superbl... |
620 |
*/ |
216fbd644 f2fs: introduce s... |
621 |
#define DEF_MIN_IPU_UTIL 70 |
c1ce1b02b f2fs: give an opt... |
622 |
#define DEF_MIN_FSYNC_BLOCKS 8 |
ef095d19e f2fs: write small... |
623 |
#define DEF_MIN_HOT_BLOCKS 16 |
216fbd644 f2fs: introduce s... |
624 |
|
84b89e5d9 f2fs: add auto tu... |
625 |
#define SMALL_VOLUME_SEGMENTS (16 * 512) /* 16GB */ |
216fbd644 f2fs: introduce s... |
626 627 628 629 630 |
enum { F2FS_IPU_FORCE, F2FS_IPU_SSR, F2FS_IPU_UTIL, F2FS_IPU_SSR_UTIL, |
c1ce1b02b f2fs: give an opt... |
631 |
F2FS_IPU_FSYNC, |
04485987f f2fs: introduce a... |
632 |
F2FS_IPU_ASYNC, |
0e7f41974 f2fs: add a way t... |
633 |
F2FS_IPU_NOCACHE, |
216fbd644 f2fs: introduce s... |
634 |
}; |
39a53e0ce f2fs: add superbl... |
635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 |
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_... |
657 |
f2fs_bug_on(sbi, segno > TOTAL_SEGS(sbi) - 1); |
39a53e0ce f2fs: add superbl... |
658 |
} |
93770ab7a f2fs: introduce D... |
659 |
static inline void verify_fio_blkaddr(struct f2fs_io_info *fio) |
39a53e0ce f2fs: add superbl... |
660 |
{ |
0833721ec f2fs: check blkad... |
661 |
struct f2fs_sb_info *sbi = fio->sbi; |
93770ab7a f2fs: introduce D... |
662 663 664 665 666 |
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... |
667 668 669 |
} /* |
e1c420452 f2fs: fix typo |
670 |
* Summary block is always treated as an invalid block |
39a53e0ce f2fs: add superbl... |
671 |
*/ |
c39a1b348 f2fs: return erro... |
672 |
static inline int check_block_count(struct f2fs_sb_info *sbi, |
39a53e0ce f2fs: add superbl... |
673 674 |
int segno, struct f2fs_sit_entry *raw_sit) { |
44c60bf2b f2fs: check all o... |
675 |
bool is_valid = test_bit_le(0, raw_sit->valid_map) ? true : false; |
39a53e0ce f2fs: add superbl... |
676 |
int valid_blocks = 0; |
44c60bf2b f2fs: check all o... |
677 |
int cur_pos = 0, next_pos; |
de881df97 f2fs: support zon... |
678 |
unsigned int usable_blks_per_seg = f2fs_usable_blks_in_seg(sbi, segno); |
39a53e0ce f2fs: add superbl... |
679 |
|
39a53e0ce f2fs: add superbl... |
680 |
/* check bitmap with valid block count */ |
44c60bf2b f2fs: check all o... |
681 682 683 |
do { if (is_valid) { next_pos = find_next_zero_bit_le(&raw_sit->valid_map, |
de881df97 f2fs: support zon... |
684 |
usable_blks_per_seg, |
44c60bf2b f2fs: check all o... |
685 686 687 688 |
cur_pos); valid_blocks += next_pos - cur_pos; } else next_pos = find_next_bit_le(&raw_sit->valid_map, |
de881df97 f2fs: support zon... |
689 |
usable_blks_per_seg, |
44c60bf2b f2fs: check all o... |
690 691 692 |
cur_pos); cur_pos = next_pos; is_valid = !is_valid; |
de881df97 f2fs: support zon... |
693 |
} while (cur_pos < usable_blks_per_seg); |
c39a1b348 f2fs: return erro... |
694 695 |
if (unlikely(GET_SIT_VBLOCKS(raw_sit) != valid_blocks)) { |
dcbb4c10e f2fs: introduce f... |
696 697 |
f2fs_err(sbi, "Mismatch valid blocks %d vs. %d", GET_SIT_VBLOCKS(raw_sit), valid_blocks); |
c39a1b348 f2fs: return erro... |
698 |
set_sbi_flag(sbi, SBI_NEED_FSCK); |
10f966bbf f2fs: use generic... |
699 |
return -EFSCORRUPTED; |
c39a1b348 f2fs: return erro... |
700 |
} |
e95bcdb2f f2fs: fix to do s... |
701 |
|
de881df97 f2fs: support zon... |
702 703 704 705 |
if (usable_blks_per_seg < sbi->blocks_per_seg) f2fs_bug_on(sbi, find_next_bit_le(&raw_sit->valid_map, sbi->blocks_per_seg, usable_blks_per_seg) != sbi->blocks_per_seg); |
4c278394b f2fs: avoid a bui... |
706 |
/* check segment usage, and check boundary of a given segment number */ |
de881df97 f2fs: support zon... |
707 |
if (unlikely(GET_SIT_VBLOCKS(raw_sit) > usable_blks_per_seg |
c39a1b348 f2fs: return erro... |
708 |
|| segno > TOTAL_SEGS(sbi) - 1)) { |
dcbb4c10e f2fs: introduce f... |
709 710 |
f2fs_err(sbi, "Wrong valid blocks %d or segno %u", GET_SIT_VBLOCKS(raw_sit), segno); |
c39a1b348 f2fs: return erro... |
711 |
set_sbi_flag(sbi, SBI_NEED_FSCK); |
10f966bbf f2fs: use generic... |
712 |
return -EFSCORRUPTED; |
c39a1b348 f2fs: return erro... |
713 714 |
} return 0; |
7a04f64d4 f2fs: unify f2fs_... |
715 |
} |
39a53e0ce f2fs: add superbl... |
716 717 718 719 720 |
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... |
721 |
unsigned int offset = SIT_BLOCK_OFFSET(start); |
39a53e0ce f2fs: add superbl... |
722 723 724 |
block_t blk_addr = sit_i->sit_base_addr + offset; check_seg_range(sbi, start); |
ae27d62e6 f2fs: check in-me... |
725 726 727 728 729 |
#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... |
730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 |
/* 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) { |
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unsigned int block_off = SIT_BLOCK_OFFSET(start); |
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|
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f2fs_change_bit(block_off, sit_i->sit_bitmap); |
ae27d62e6 f2fs: check in-me... |
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#ifdef CONFIG_F2FS_CHECK_FS f2fs_change_bit(block_off, sit_i->sit_bitmap_mir); #endif |
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} |
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static inline unsigned long long get_mtime(struct f2fs_sb_info *sbi, bool base_time) |
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{ struct sit_info *sit_i = SIT_I(sbi); |
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time64_t diff, now = ktime_get_boottime_seconds(); |
48fbfe50f fs: f2fs: use kti... |
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|
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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; |
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} 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; } |
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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; } |
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/* * 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, |
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* 512 pages (2MB) * 8 for nodes, and * 256 pages * 8 for meta are set. |
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*/ static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type) { |
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if (sbi->sb->s_bdi->wb.dirty_exceeded) |
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return 0; |
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if (type == DATA) return sbi->blocks_per_seg; else if (type == NODE) |
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return 8 * sbi->blocks_per_seg; |
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else if (type == META) |
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return 8 * BIO_MAX_PAGES; |
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else return 0; } |
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/* * 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; |
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desired = BIO_MAX_PAGES; |
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if (type == NODE) |
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desired <<= 1; |
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wbc->nr_to_write = desired; return desired - nr_to_write; } |
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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); } |