diff options
Diffstat (limited to 'fs/f2fs/gc.h')
| -rw-r--r-- | fs/f2fs/gc.h | 77 |
1 files changed, 51 insertions, 26 deletions
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 3fe145e8e594..6c4d4567571e 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -15,21 +15,36 @@ #define DEF_GC_THREAD_MAX_SLEEP_TIME 60000 #define DEF_GC_THREAD_NOGC_SLEEP_TIME 300000 /* wait 5 min */ +/* GC sleep parameters for zoned deivces */ +#define DEF_GC_THREAD_MIN_SLEEP_TIME_ZONED 10 +#define DEF_GC_THREAD_MAX_SLEEP_TIME_ZONED 20 +#define DEF_GC_THREAD_NOGC_SLEEP_TIME_ZONED 60000 + /* choose candidates from sections which has age of more than 7 days */ #define DEF_GC_THREAD_AGE_THRESHOLD (60 * 60 * 24 * 7) #define DEF_GC_THREAD_CANDIDATE_RATIO 20 /* select 20% oldest sections as candidates */ #define DEF_GC_THREAD_MAX_CANDIDATE_COUNT 10 /* select at most 10 sections as candidates */ #define DEF_GC_THREAD_AGE_WEIGHT 60 /* age weight */ +#define DEF_GC_THREAD_VALID_THRESH_RATIO 80 /* do not GC over 80% valid block ratio for one time GC */ #define DEFAULT_ACCURACY_CLASS 10000 /* accuracy class */ #define LIMIT_INVALID_BLOCK 40 /* percentage over total user space */ #define LIMIT_FREE_BLOCK 40 /* percentage over invalid + free space */ +#define LIMIT_NO_ZONED_GC 60 /* percentage over total user space of no gc for zoned devices */ +#define LIMIT_BOOST_ZONED_GC 25 /* percentage over total user space of boosted gc for zoned devices */ +#define DEF_MIGRATION_WINDOW_GRANULARITY_ZONED 3 +#define BOOST_GC_MULTIPLE 5 +#define ZONED_PIN_SEC_REQUIRED_COUNT 1 + #define DEF_GC_FAILED_PINNED_FILES 2048 +#define MAX_GC_FAILED_PINNED_FILES USHRT_MAX /* Search max. number of dirty segments to select a victim segment */ #define DEF_MAX_VICTIM_SEARCH 4096 /* covers 8GB */ +#define NR_GC_CHECKPOINT_SECS (3) /* data/node/dentry sections */ + struct f2fs_gc_kthread { struct task_struct *f2fs_gc_task; wait_queue_head_t gc_wait_queue_head; @@ -41,13 +56,20 @@ struct f2fs_gc_kthread { unsigned int no_gc_sleep_time; /* for changing gc mode */ - unsigned int gc_wake; + bool gc_wake; /* for GC_MERGE mount option */ wait_queue_head_t fggc_wq; /* * caller of f2fs_balance_fs() * will wait on this wait queue. */ + + /* for gc control for zoned devices */ + unsigned int no_zoned_gc_percent; + unsigned int boost_zoned_gc_percent; + unsigned int valid_thresh_ratio; + unsigned int boost_gc_multiple; + unsigned int boost_gc_greedy; }; struct gc_inode_list { @@ -55,20 +77,10 @@ struct gc_inode_list { struct radix_tree_root iroot; }; -struct victim_info { - unsigned long long mtime; /* mtime of section */ - unsigned int segno; /* section No. */ -}; - struct victim_entry { struct rb_node rb_node; /* rb node located in rb-tree */ - union { - struct { - unsigned long long mtime; /* mtime of section */ - unsigned int segno; /* segment No. */ - }; - struct victim_info vi; /* victim info */ - }; + unsigned long long mtime; /* mtime of section */ + unsigned int segno; /* segment No. */ struct list_head list; }; @@ -104,7 +116,7 @@ static inline block_t free_segs_blk_count(struct f2fs_sb_info *sbi) if (f2fs_sb_has_blkzoned(sbi)) return free_segs_blk_count_zoned(sbi); - return free_segments(sbi) << sbi->log_blocks_per_seg; + return SEGS_TO_BLKS(sbi, free_segments(sbi)); } static inline block_t free_user_blocks(struct f2fs_sb_info *sbi) @@ -112,7 +124,7 @@ static inline block_t free_user_blocks(struct f2fs_sb_info *sbi) block_t free_blks, ovp_blks; free_blks = free_segs_blk_count(sbi); - ovp_blks = overprovision_segments(sbi) << sbi->log_blocks_per_seg; + ovp_blks = SEGS_TO_BLKS(sbi, overprovision_segments(sbi)); if (free_blks < ovp_blks) return 0; @@ -120,15 +132,13 @@ static inline block_t free_user_blocks(struct f2fs_sb_info *sbi) return free_blks - ovp_blks; } -static inline block_t limit_invalid_user_blocks(struct f2fs_sb_info *sbi) +static inline block_t limit_invalid_user_blocks(block_t user_block_count) { - return (long)(sbi->user_block_count * LIMIT_INVALID_BLOCK) / 100; + return (long)(user_block_count * LIMIT_INVALID_BLOCK) / 100; } -static inline block_t limit_free_user_blocks(struct f2fs_sb_info *sbi) +static inline block_t limit_free_user_blocks(block_t reclaimable_user_blocks) { - block_t reclaimable_user_blocks = sbi->user_block_count - - written_block_count(sbi); return (long)(reclaimable_user_blocks * LIMIT_FREE_BLOCK) / 100; } @@ -161,17 +171,32 @@ static inline void decrease_sleep_time(struct f2fs_gc_kthread *gc_th, *wait -= min_time; } +static inline bool has_enough_free_blocks(struct f2fs_sb_info *sbi, + unsigned int limit_perc) +{ + return free_sections(sbi) > ((sbi->total_sections * limit_perc) / 100); +} + static inline bool has_enough_invalid_blocks(struct f2fs_sb_info *sbi) { - block_t invalid_user_blocks = sbi->user_block_count - - written_block_count(sbi); + block_t user_block_count = sbi->user_block_count; + block_t invalid_user_blocks = user_block_count - + written_block_count(sbi); /* * Background GC is triggered with the following conditions. * 1. There are a number of invalid blocks. * 2. There is not enough free space. */ - if (invalid_user_blocks > limit_invalid_user_blocks(sbi) && - free_user_blocks(sbi) < limit_free_user_blocks(sbi)) - return true; - return false; + return (invalid_user_blocks > + limit_invalid_user_blocks(user_block_count) && + free_user_blocks(sbi) < + limit_free_user_blocks(invalid_user_blocks)); +} + +static inline bool need_to_boost_gc(struct f2fs_sb_info *sbi) +{ + if (f2fs_sb_has_blkzoned(sbi)) + return !has_enough_free_blocks(sbi, + sbi->gc_thread->boost_zoned_gc_percent); + return has_enough_invalid_blocks(sbi); } |