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Mon, 28 Nov 2022 01:06:20 -0800 (PST) Received: from mi-HP-ProDesk-680-G4-MT.mioffice.cn ([43.224.245.252]) by smtp.gmail.com with ESMTPSA id s17-20020a170902ea1100b001811a197797sm8269268plg.194.2022.11.28.01.06.18 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 28 Nov 2022 01:06:19 -0800 (PST) From: qixiaoyu1 X-Google-Original-From: qixiaoyu1 To: Jaegeuk Kim , Chao Yu Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, qixiaoyu1 , xiongping1 Subject: [PATCH 2/5] f2fs: implement cache to manager block update frequency per inode Date: Mon, 28 Nov 2022 16:58:56 +0800 Message-Id: <20221128085859.5295-3-qixiaoyu1@xiaomi.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20221128085859.5295-1-qixiaoyu1@xiaomi.com> References: <20221128085859.5295-1-qixiaoyu1@xiaomi.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: xiongping1 Signed-off-by: xiongping1 Signed-off-by: qixiaoyu1 --- fs/f2fs/block_age.c | 590 +++++++++++++++++++++++++++++++++++- fs/f2fs/debug.c | 13 + fs/f2fs/f2fs.h | 64 +++- fs/f2fs/file.c | 10 + fs/f2fs/inode.c | 8 + fs/f2fs/namei.c | 4 + fs/f2fs/node.c | 7 +- fs/f2fs/node.h | 3 + fs/f2fs/segment.c | 6 + fs/f2fs/shrinker.c | 3 + fs/f2fs/super.c | 22 +- include/trace/events/f2fs.h | 239 +++++++++++++++ 12 files changed, 965 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/block_age.c b/fs/f2fs/block_age.c index 1e8711a03959..c8e8fbe51d8e 100644 --- a/fs/f2fs/block_age.c +++ b/fs/f2fs/block_age.c @@ -10,19 +10,607 @@ #include "f2fs.h" #include "segment.h" +#include + +static struct kmem_cache *age_extent_tree_slab; +static struct kmem_cache *age_extent_node_slab; + static inline void f2fs_inc_data_block_alloc(struct f2fs_sb_info *sbi) { atomic64_inc(&sbi->total_data_alloc); } -void f2fs_init_block_age_info(struct f2fs_sb_info *sbi) +static void f2fs_init_block_age_info(struct f2fs_sb_info *sbi) { atomic64_set(&sbi->total_data_alloc, 0); } +static inline bool f2fs_may_age_extent_tree(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + /* + * for recovered files during mount do not create extents + * if shrinker is not registered. + */ + if (list_empty(&sbi->s_list)) + return false; + + /* don't cache block age info for cold file */ + if (is_inode_flag_set(inode, FI_COMPRESSED_FILE) || + file_is_cold(inode)) + return false; + + return S_ISREG(inode->i_mode) + || S_ISDIR(inode->i_mode); +} + +static void f2fs_init_age_cache_info(struct f2fs_sb_info *sbi) +{ + INIT_RADIX_TREE(&sbi->age_extent_tree_root, GFP_NOIO); + mutex_init(&sbi->age_extent_tree_lock); + INIT_LIST_HEAD(&sbi->age_extent_list); + spin_lock_init(&sbi->age_extent_lock); + atomic_set(&sbi->total_age_ext_tree, 0); + INIT_LIST_HEAD(&sbi->zombie_age_list); + atomic_set(&sbi->total_zombie_age_tree, 0); + atomic_set(&sbi->total_age_ext_node, 0); +} + +#ifdef CONFIG_QUOTA +static void f2fs_init_quota_age_extent_cache(struct f2fs_sb_info *sbi) +{ + struct quota_info *dqopt = sb_dqopt(sbi->sb); + struct inode *qinode; + int cnt; + + for (cnt = 0; cnt < MAXQUOTAS; cnt++) { + if (!sb_has_quota_active(sbi->sb, cnt)) + continue; + + qinode = dqopt->files[cnt]; + f2fs_init_age_extent_tree(qinode); + } +} +#endif + +static void __detach_age_extent_node(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_node *en) +{ + rb_erase_cached(&en->rb_node, &et->root); + atomic_dec(&et->node_cnt); + atomic_dec(&sbi->total_age_ext_node); + + if (et->cached_en == en) + et->cached_en = NULL; + + trace_f2fs_detach_age_extent_node(sbi, et, &en->ei); + kmem_cache_free(age_extent_node_slab, en); +} + +/* + * Flow to release an age_extent_node: + * 1. list_del_init + * 2. __detach_age_extent_node + * 3. kmem_cache_free. + */ +static void __release_age_extent_node(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_node *en) +{ + spin_lock(&sbi->age_extent_lock); + f2fs_bug_on(sbi, list_empty(&en->list)); + list_del_init(&en->list); + spin_unlock(&sbi->age_extent_lock); + + __detach_age_extent_node(sbi, et, en); +} + +static unsigned int __free_age_extent_tree(struct f2fs_sb_info *sbi, + struct age_extent_tree *et) +{ + struct rb_node *node, *next; + struct age_extent_node *en; + unsigned int count = atomic_read(&et->node_cnt); + + node = rb_first_cached(&et->root); + while (node) { + next = rb_next(node); + en = rb_entry(node, struct age_extent_node, rb_node); + __release_age_extent_node(sbi, et, en); + node = next; + } + + return count - atomic_read(&et->node_cnt); +} + +unsigned int f2fs_drop_age_extent_node(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct age_extent_tree *et = F2FS_I(inode)->age_extent_tree; + unsigned int node_cnt = 0; + + if (!et || !atomic_read(&et->node_cnt)) + return 0; + + write_lock(&et->lock); + node_cnt = __free_age_extent_tree(sbi, et); + write_unlock(&et->lock); + + return node_cnt; +} + +unsigned int f2fs_shrink_age_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink) +{ + struct age_extent_tree *et, *next; + struct age_extent_node *en; + unsigned int node_cnt = 0, tree_cnt = 0; + int remained; + + if (!atomic_read(&sbi->total_zombie_age_tree)) + goto free_node; + + if (!mutex_trylock(&sbi->age_extent_tree_lock)) + goto out; + + /* 1. remove unreferenced extent tree */ + list_for_each_entry_safe(et, next, &sbi->zombie_age_list, list) { + if (atomic_read(&et->node_cnt)) { + write_lock(&et->lock); + node_cnt += __free_age_extent_tree(sbi, et); + write_unlock(&et->lock); + } + f2fs_bug_on(sbi, atomic_read(&et->node_cnt)); + list_del_init(&et->list); + radix_tree_delete(&sbi->age_extent_tree_root, et->ino); + kmem_cache_free(age_extent_tree_slab, et); + atomic_dec(&sbi->total_age_ext_tree); + atomic_dec(&sbi->total_zombie_age_tree); + tree_cnt++; + + if (node_cnt + tree_cnt >= nr_shrink) + goto unlock_out; + cond_resched(); + } + mutex_unlock(&sbi->age_extent_tree_lock); + +free_node: + /* 2. remove LRU extent entries */ + if (!mutex_trylock(&sbi->age_extent_tree_lock)) + goto out; + + remained = nr_shrink - (node_cnt + tree_cnt); + + spin_lock(&sbi->age_extent_lock); + for (; remained > 0; remained--) { + if (list_empty(&sbi->age_extent_list)) + break; + en = list_first_entry(&sbi->age_extent_list, + struct age_extent_node, list); + et = en->et; + if (!write_trylock(&et->lock)) { + /* refresh this extent node's position in extent list */ + list_move_tail(&en->list, &sbi->age_extent_list); + continue; + } + + list_del_init(&en->list); + spin_unlock(&sbi->age_extent_lock); + + __detach_age_extent_node(sbi, et, en); + + write_unlock(&et->lock); + node_cnt++; + spin_lock(&sbi->age_extent_lock); + } + spin_unlock(&sbi->age_extent_lock); + +unlock_out: + mutex_unlock(&sbi->age_extent_tree_lock); +out: + trace_f2fs_shrink_age_extent_tree(sbi, nr_shrink, node_cnt, tree_cnt); + + return node_cnt + tree_cnt; +} + +static bool f2fs_lookup_age_extent_tree(struct inode *inode, pgoff_t pgofs, + struct age_extent_info *ei) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct age_extent_tree *et = F2FS_I(inode)->age_extent_tree; + struct age_extent_node *en; + + if (!et) + return false; + + trace_f2fs_lookup_age_extent_tree_start(inode, pgofs); + + read_lock(&et->lock); + + en = (struct age_extent_node *)f2fs_lookup_rb_tree(&et->root, + (struct rb_entry *)et->cached_en, pgofs); + if (!en) { + read_unlock(&et->lock); + return false; + } + + if (ei) + *ei = en->ei; + spin_lock(&sbi->age_extent_lock); + if (!list_empty(&en->list)) { + list_move_tail(&en->list, &sbi->age_extent_list); + et->cached_en = en; + } + spin_unlock(&sbi->age_extent_lock); + read_unlock(&et->lock); + + trace_f2fs_lookup_age_extent_tree_end(inode, pgofs, &en->ei); + return true; +} + +bool f2fs_lookup_age_extent_cache(struct inode *inode, pgoff_t pgofs, + struct age_extent_info *ei) +{ + if (!f2fs_may_age_extent_tree(inode)) + return false; + + return f2fs_lookup_age_extent_tree(inode, pgofs, ei); +} + +static inline bool __is_age_extent_mergeable(struct age_extent_info *back, + struct age_extent_info *front) +{ + return (back->fofs + back->len == front->fofs && + back->age == front->age && + back->last_blocks == front->last_blocks); +} + +static inline bool __is_back_age_ext_mergeable(struct age_extent_info *cur, + struct age_extent_info *back) +{ + return __is_age_extent_mergeable(back, cur); +} + +static inline bool __is_front_age_ext_mergeable(struct age_extent_info *cur, + struct age_extent_info *front) +{ + return __is_age_extent_mergeable(cur, front); +} + +static inline void set_age_extent_info(struct age_extent_info *ei, unsigned int fofs, + unsigned int len, unsigned long long age, + unsigned long long last_blocks) +{ + ei->fofs = fofs; + ei->len = len; + ei->age = age; + ei->last_blocks = last_blocks; +} + +static struct age_extent_node *__try_merge_age_extent_node(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei, + struct age_extent_node *prev_ex, + struct age_extent_node *next_ex) +{ + struct age_extent_node *en = NULL; + + if (prev_ex && __is_back_age_ext_mergeable(ei, &prev_ex->ei)) { + prev_ex->ei.len += ei->len; + ei = &prev_ex->ei; + en = prev_ex; + } + + if (next_ex && __is_front_age_ext_mergeable(ei, &next_ex->ei)) { + next_ex->ei.fofs = ei->fofs; + next_ex->ei.len += ei->len; + if (en) + __release_age_extent_node(sbi, et, prev_ex); + + en = next_ex; + } + + if (!en) + return NULL; + + spin_lock(&sbi->age_extent_lock); + if (!list_empty(&en->list)) { + list_move_tail(&en->list, &sbi->age_extent_list); + et->cached_en = en; + } + spin_unlock(&sbi->age_extent_lock); + + trace_f2fs_merged_age_extent_node(sbi, et, &en->ei); + return en; +} + +static struct age_extent_node *__attach_age_extent_node(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei, + struct rb_node *parent, struct rb_node **p, + bool leftmost) +{ + struct age_extent_node *en; + + en = kmem_cache_alloc(age_extent_node_slab, GFP_ATOMIC); + if (!en) + return NULL; + + en->ei = *ei; + INIT_LIST_HEAD(&en->list); + en->et = et; + + rb_link_node(&en->rb_node, parent, p); + rb_insert_color_cached(&en->rb_node, &et->root, leftmost); + atomic_inc(&et->node_cnt); + atomic_inc(&sbi->total_age_ext_node); + + trace_f2fs_attach_age_extent_node(sbi, en->et, &en->ei); + return en; +} + +static struct age_extent_node *__insert_age_extent_tree(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei, + struct rb_node **insert_p, + struct rb_node *insert_parent, + bool leftmost) +{ + struct rb_node **p; + struct rb_node *parent = NULL; + struct age_extent_node *en = NULL; + + if (insert_p && insert_parent) { + parent = insert_parent; + p = insert_p; + goto do_insert; + } + + leftmost = true; + + p = f2fs_lookup_rb_tree_for_insert(sbi, &et->root, &parent, + ei->fofs, &leftmost); +do_insert: + en = __attach_age_extent_node(sbi, et, ei, parent, p, leftmost); + if (!en) + return NULL; + + /* update in global extent list */ + spin_lock(&sbi->age_extent_lock); + list_add_tail(&en->list, &sbi->age_extent_list); + et->cached_en = en; + spin_unlock(&sbi->age_extent_lock); + + return en; +} + +static void f2fs_update_age_extent_tree_range(struct inode *inode, + pgoff_t fofs, unsigned int len, unsigned long long age, + unsigned long long last_blks) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct age_extent_tree *et = F2FS_I(inode)->age_extent_tree; + struct age_extent_node *en = NULL, *en1 = NULL; + struct age_extent_node *prev_en = NULL, *next_en = NULL; + struct age_extent_info ei, dei; + struct rb_node **insert_p = NULL, *insert_parent = NULL; + unsigned int end = fofs + len; + unsigned int pos = (unsigned int)fofs; + bool leftmost = false; + + if (!et) + return; + + trace_f2fs_update_age_extent_tree_range(inode, fofs, len, age, last_blks); + + write_lock(&et->lock); + + /* 1. lookup first extent node in range [fofs, fofs + len - 1] */ + en = (struct age_extent_node *)f2fs_lookup_rb_tree_ret(&et->root, + (struct rb_entry *)et->cached_en, fofs, + (struct rb_entry **)&prev_en, + (struct rb_entry **)&next_en, + &insert_p, &insert_parent, false, + &leftmost); + if (!en) + en = next_en; + + /* 2. invlidate all age extent nodes in range [fofs, fofs + len - 1] */ + while (en && en->ei.fofs < end) { + unsigned int org_end; + int parts = 0; /* # of parts current age extent split into */ + + next_en = en1 = NULL; + + dei = en->ei; + org_end = dei.fofs + dei.len; + f2fs_bug_on(sbi, pos >= org_end); + + if (pos > dei.fofs) { + en->ei.len = pos - en->ei.fofs; + prev_en = en; + parts = 1; + } + + if (end < org_end) { + if (parts) { + set_age_extent_info(&ei, end, + org_end - end, dei.age, dei.last_blocks); + en1 = __insert_age_extent_tree(sbi, et, &ei, + NULL, NULL, true); + next_en = en1; + } else { + en->ei.fofs = end; + en->ei.len -= end - dei.fofs; + en->ei.age = dei.age; + en->ei.last_blocks = dei.last_blocks; + next_en = en; + } + parts++; + } + + if (!next_en) { + struct rb_node *node = rb_next(&en->rb_node); + + next_en = rb_entry_safe(node, struct age_extent_node, + rb_node); + } + + if (!parts) + __release_age_extent_node(sbi, et, en); + + /* + * if original extent is split into zero or two parts, extent + * tree has been altered by deletion or insertion, therefore + * invalidate pointers regard to tree. + */ + if (parts != 1) { + insert_p = NULL; + insert_parent = NULL; + } + en = next_en; + } + + /* 3. update extent in extent cache */ + if (last_blks) { + set_age_extent_info(&ei, fofs, len, age, last_blks); + if (!__try_merge_age_extent_node(sbi, et, &ei, prev_en, next_en)) + __insert_age_extent_tree(sbi, et, &ei, + insert_p, insert_parent, leftmost); + } + + write_unlock(&et->lock); +} + +void f2fs_update_age_extent_cache(struct inode *inode, pgoff_t fofs, + unsigned int len, unsigned long long age, + unsigned long long cur_blk_alloced) +{ + if (!f2fs_may_age_extent_tree(inode)) + return; + + f2fs_update_age_extent_tree_range(inode, fofs, len, age, cur_blk_alloced); +} + +void f2fs_truncate_age_extent_cache(struct inode *inode, pgoff_t fofs, unsigned int len) +{ + f2fs_update_age_extent_cache(inode, fofs, len, 0, 0); +} + +void f2fs_destroy_age_extent_tree(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct age_extent_tree *et = F2FS_I(inode)->age_extent_tree; + unsigned int node_cnt = 0; + + if (!et) + return; + + if (inode->i_nlink && !is_bad_inode(inode) && + atomic_read(&et->node_cnt)) { + mutex_lock(&sbi->age_extent_tree_lock); + list_add_tail(&et->list, &sbi->zombie_age_list); + atomic_inc(&sbi->total_zombie_age_tree); + mutex_unlock(&sbi->age_extent_tree_lock); + return; + } + + /* free all extent info belong to this extent tree */ + node_cnt = f2fs_drop_age_extent_node(inode); + + /* delete extent tree entry in radix tree */ + mutex_lock(&sbi->age_extent_tree_lock); + f2fs_bug_on(sbi, atomic_read(&et->node_cnt)); + radix_tree_delete(&sbi->age_extent_tree_root, inode->i_ino); + kmem_cache_free(age_extent_tree_slab, et); + atomic_dec(&sbi->total_age_ext_tree); + mutex_unlock(&sbi->age_extent_tree_lock); + + F2FS_I(inode)->age_extent_tree = NULL; + + trace_f2fs_destroy_age_extent_tree(inode, node_cnt); +} + +void f2fs_init_data_seperation_info(struct f2fs_sb_info *sbi) +{ + f2fs_init_block_age_info(sbi); + f2fs_init_age_cache_info(sbi); + + f2fs_init_age_extent_tree(sbi->sb->s_root->d_inode); +#ifdef CONFIG_QUOTA + f2fs_init_quota_age_extent_cache(sbi); +#endif +} + void f2fs_inc_block_alloc_count(struct f2fs_sb_info *sbi, int type) { if (IS_DATASEG(type)) f2fs_inc_data_block_alloc(sbi); } + +int __init f2fs_create_age_extent_cache(void) +{ + age_extent_tree_slab = f2fs_kmem_cache_create("f2fs_age_extent_tree", + sizeof(struct age_extent_tree)); + if (!age_extent_tree_slab) + return -ENOMEM; + age_extent_node_slab = f2fs_kmem_cache_create("f2fs_age_extent_node", + sizeof(struct age_extent_node)); + if (!age_extent_node_slab) { + kmem_cache_destroy(age_extent_tree_slab); + return -ENOMEM; + } + return 0; +} + +bool f2fs_init_age_extent_tree(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct age_extent_tree *et; + nid_t ino = inode->i_ino; + + if (!f2fs_may_age_extent_tree(inode)) + return false; + + mutex_lock(&sbi->age_extent_tree_lock); + et = radix_tree_lookup(&sbi->age_extent_tree_root, ino); + if (!et) { + et = f2fs_kmem_cache_alloc(age_extent_tree_slab, GFP_NOFS, false, sbi); + f2fs_radix_tree_insert(&sbi->age_extent_tree_root, ino, et); + memset(et, 0, sizeof(struct age_extent_tree)); + et->ino = ino; + et->root = RB_ROOT_CACHED; + et->cached_en = NULL; + rwlock_init(&et->lock); + INIT_LIST_HEAD(&et->list); + atomic_set(&et->node_cnt, 0); + atomic_inc(&sbi->total_age_ext_tree); + } else { + atomic_dec(&sbi->total_zombie_age_tree); + list_del_init(&et->list); + } + mutex_unlock(&sbi->age_extent_tree_lock); + + /* never died until evict_inode */ + F2FS_I(inode)->age_extent_tree = et; + + trace_f2fs_init_age_extent_tree(inode, atomic_read(&et->node_cnt)); + return true; +} + +unsigned long long f2fs_total_age_cache_size(struct f2fs_sb_info *sbi) +{ + return atomic_read(&sbi->total_age_ext_tree) * + sizeof(struct age_extent_tree) + + atomic_read(&sbi->total_age_ext_node) * + sizeof(struct age_extent_node); +} + +unsigned long f2fs_count_age_extent_cache(struct f2fs_sb_info *sbi) +{ + return atomic_read(&sbi->total_zombie_age_tree) + + atomic_read(&sbi->total_age_ext_node); +} + +void f2fs_destroy_age_extent_cache(void) +{ + kmem_cache_destroy(age_extent_node_slab); + kmem_cache_destroy(age_extent_tree_slab); +} diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index d24abdac20bb..38eb8699a497 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -83,6 +83,8 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->ext_node = atomic_read(&sbi->total_ext_node); #ifdef CONFIG_F2FS_FS_DATA_SEPARATION si->total_data_blocks_alloc = atomic64_read(&sbi->total_data_alloc); + si->age_ext_tree_count = atomic_read(&sbi->total_age_ext_tree); + si->age_ext_node_count = atomic_read(&sbi->total_age_ext_node); #endif si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES); si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS); @@ -301,6 +303,9 @@ static void update_mem_info(struct f2fs_sb_info *sbi) sizeof(struct extent_tree); si->cache_mem += atomic_read(&sbi->total_ext_node) * sizeof(struct extent_node); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + si->age_ext_mem = f2fs_total_age_cache_size(sbi); +#endif si->page_mem = 0; if (sbi->node_inode) { @@ -575,6 +580,14 @@ static int stat_show(struct seq_file *s, void *v) si->base_mem >> 10); seq_printf(s, " - cached: %llu KB\n", si->cache_mem >> 10); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + seq_printf(s, " - age cached: %llu KB\n", + si->age_ext_mem >> 10); + seq_printf(s, " - ext tree count: %u\n", + si->age_ext_tree_count); + seq_printf(s, " - ext node count: %u\n", + si->age_ext_node_count); +#endif seq_printf(s, " - paged : %llu KB\n", si->page_mem >> 10); } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 686f09846de4..5cc516228407 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -603,6 +603,10 @@ enum { #define RECOVERY_MIN_RA_BLOCKS 1 #define F2FS_ONSTACK_PAGES 16 /* nr of onstack pages */ +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION +/* number of age extent info in extent cache we try to shrink */ +#define AGE_EXTENT_CACHE_SHRINK_NUMBER 128 +#endif struct rb_entry { struct rb_node rb_node; /* rb node located in rb-tree */ @@ -642,6 +646,31 @@ struct extent_tree { bool largest_updated; /* largest extent updated */ }; +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION +struct age_extent_info { + unsigned int fofs; /* start offset in a file */ + unsigned int len; /* length of the extent */ + unsigned long long age; /* block age of the extent */ + unsigned long long last_blocks; /* last total blocks allocated */ +}; + +struct age_extent_node { + struct rb_node rb_node; /* rb node located in rb-tree */ + struct age_extent_info ei; /* age extent info */ + struct list_head list; /* node in global age extent list of sbi */ + struct age_extent_tree *et; /* age extent tree pointer */ +}; + +struct age_extent_tree { + nid_t ino; /* inode number */ + struct rb_root_cached root; /* root of age extent info rb-tree */ + struct age_extent_node *cached_en; /* recently accessed age extent node */ + struct list_head list; /* to be used by sbi->zombie_age_list */ + rwlock_t lock; /* protect age extent info rb-tree */ + atomic_t node_cnt; /* # of age extent node in rb-tree*/ +}; +#endif + /* * This structure is taken from ext4_map_blocks. * @@ -803,6 +832,9 @@ struct f2fs_inode_info { struct extent_tree *extent_tree; /* cached extent_tree entry */ struct inode *cow_inode; /* copy-on-write inode for atomic write */ +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + struct age_extent_tree *age_extent_tree; /* cached age_extent_tree entry */ +#endif /* avoid racing between foreground op and gc */ struct f2fs_rwsem i_gc_rwsem[2]; struct f2fs_rwsem i_xattr_sem; /* avoid racing between reading and changing EAs */ @@ -1677,6 +1709,18 @@ struct f2fs_sb_info { atomic_t total_zombie_tree; /* extent zombie tree count */ atomic_t total_ext_node; /* extent info count */ +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + /* for age extent tree cache */ + struct radix_tree_root age_extent_tree_root; /* cache age extent cache entries */ + struct mutex age_extent_tree_lock; /* locking age extent radix tree */ + struct list_head age_extent_list; /* lru list for shrinker */ + spinlock_t age_extent_lock; /* locking age extent lru list */ + atomic_t total_age_ext_tree; /* age extent tree count */ + struct list_head zombie_age_list; /* age extent zombie tree list */ + atomic_t total_zombie_age_tree; /* age extent zombie tree count */ + atomic_t total_age_ext_node; /* age extent info count */ +#endif + /* basic filesystem units */ unsigned int log_sectors_per_block; /* log2 sectors per block */ unsigned int log_blocksize; /* log2 block size */ @@ -3864,6 +3908,9 @@ struct f2fs_stat_info { unsigned long long hit_total, total_ext; #ifdef CONFIG_F2FS_FS_DATA_SEPARATION unsigned long long total_data_blocks_alloc; + unsigned long long age_ext_mem; + unsigned int age_ext_tree_count; + unsigned int age_ext_node_count; #endif int ext_tree, zombie_tree, ext_node; int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta; @@ -4177,8 +4224,23 @@ void f2fs_destroy_extent_cache(void); /* * block_age.c */ -void f2fs_init_block_age_info(struct f2fs_sb_info *sbi); +void f2fs_init_data_seperation_info(struct f2fs_sb_info *sbi); void f2fs_inc_block_alloc_count(struct f2fs_sb_info *sbi, int type); +unsigned long long f2fs_total_age_cache_size(struct f2fs_sb_info *sbi); +unsigned long f2fs_count_age_extent_cache(struct f2fs_sb_info *sbi); +bool f2fs_init_age_extent_tree(struct inode *inode); +unsigned int f2fs_shrink_age_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink); +unsigned int f2fs_drop_age_extent_node(struct inode *inode); +void f2fs_destroy_age_extent_tree(struct inode *inode); +bool f2fs_lookup_age_extent_cache(struct inode *inode, pgoff_t pgofs, + struct age_extent_info *ei); +void f2fs_update_age_extent_cache(struct inode *inode, pgoff_t fofs, + unsigned int len, u64 age, + unsigned long long cur_blk_alloced); +void f2fs_truncate_age_extent_cache(struct inode *inode, pgoff_t fofs, + unsigned int len); +int __init f2fs_create_age_extent_cache(void); +void f2fs_destroy_age_extent_cache(void); #endif /* diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 82cda1258227..860e2405e6bb 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -619,6 +619,10 @@ void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) + ofs; f2fs_update_extent_cache_range(dn, fofs, 0, len); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + /* delete block age info from cache */ + f2fs_truncate_age_extent_cache(dn->inode, fofs, nr_free); +#endif dec_valid_block_count(sbi, dn->inode, nr_free); } dn->ofs_in_node = ofs; @@ -1403,6 +1407,9 @@ static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len) f2fs_lock_op(sbi); f2fs_drop_extent_tree(inode); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_drop_age_extent_node(inode); +#endif truncate_pagecache(inode, offset); ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); f2fs_unlock_op(sbi); @@ -1664,6 +1671,9 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) f2fs_lock_op(sbi); f2fs_drop_extent_tree(inode); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_drop_age_extent_node(inode); +#endif ret = __exchange_data_block(inode, inode, idx, idx + delta, nr, false); diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 9f0d3864d9f1..be05870b466f 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -394,6 +394,10 @@ static int do_read_inode(struct inode *inode) f2fs_init_extent_tree(inode, node_page); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_init_age_extent_tree(inode); +#endif + get_inline_info(inode, ri); fi->i_extra_isize = f2fs_has_extra_attr(inode) ? @@ -782,6 +786,10 @@ void f2fs_evict_inode(struct inode *inode) f2fs_destroy_extent_tree(inode); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_destroy_age_extent_tree(inode); +#endif + if (inode->i_nlink || is_bad_inode(inode)) goto no_delete; diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index a389772fd212..193d65e8f292 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -105,6 +105,10 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns, f2fs_init_extent_tree(inode, NULL); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_init_age_extent_tree(inode); +#endif + F2FS_I(inode)->i_flags = f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED); diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 983572f23896..280dcc8d4939 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -60,7 +60,7 @@ bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) avail_ram = val.totalram - val.totalhigh; /* - * give 25%, 25%, 50%, 50%, 50% memory for each components respectively + * give 25%, 25%, 50%, 50%, 50%, 50% memory for each components respectively */ if (type == FREE_NIDS) { mem_size = (nm_i->nid_cnt[FREE_NID] * @@ -91,6 +91,11 @@ bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) atomic_read(&sbi->total_ext_node) * sizeof(struct extent_node)) >> PAGE_SHIFT; res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + } else if (type == AGE_EXTENT_CACHE) { + mem_size = f2fs_total_age_cache_size(sbi) >> PAGE_SHIFT; + res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); +#endif } else if (type == DISCARD_CACHE) { mem_size = (atomic_read(&dcc->discard_cmd_cnt) * sizeof(struct discard_cmd)) >> PAGE_SHIFT; diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 3c09cae058b0..3a103bd3833f 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -147,6 +147,9 @@ enum mem_type { DIRTY_DENTS, /* indicates dirty dentry pages */ INO_ENTRIES, /* indicates inode entries */ EXTENT_CACHE, /* indicates extent cache */ +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + AGE_EXTENT_CACHE, /* indicates age extent cache */ +#endif DISCARD_CACHE, /* indicates memory of cached discard cmds */ COMPRESS_PAGE, /* indicates memory of cached compressed pages */ BASE_CHECK, /* check kernel status */ diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 0cf022fd3560..b105d8418f77 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -440,6 +440,12 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg) if (!f2fs_available_free_memory(sbi, EXTENT_CACHE)) f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + /* try to shrink age extent cache when there is no enough memory */ + if (!f2fs_available_free_memory(sbi, AGE_EXTENT_CACHE)) + f2fs_shrink_age_extent_tree(sbi, AGE_EXTENT_CACHE_SHRINK_NUMBER); +#endif + /* check the # of cached NAT entries */ if (!f2fs_available_free_memory(sbi, NAT_ENTRIES)) f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c index dd3c3c7a90ec..9a139a0a6f8f 100644 --- a/fs/f2fs/shrinker.c +++ b/fs/f2fs/shrinker.c @@ -131,6 +131,9 @@ void f2fs_join_shrinker(struct f2fs_sb_info *sbi) void f2fs_leave_shrinker(struct f2fs_sb_info *sbi) { f2fs_shrink_extent_tree(sbi, __count_extent_cache(sbi)); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_shrink_age_extent_tree(sbi, f2fs_count_age_extent_cache(sbi)); +#endif spin_lock(&f2fs_list_lock); list_del_init(&sbi->s_list); diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index bf799d92282a..91d3c9d0425d 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1421,6 +1421,10 @@ static int f2fs_drop_inode(struct inode *inode) /* should remain fi->extent_tree for writepage */ f2fs_destroy_extent_node(inode); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_drop_age_extent_node(inode); +#endif + sb_start_intwrite(inode->i_sb); f2fs_i_size_write(inode, 0); @@ -4476,7 +4480,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) f2fs_join_shrinker(sbi); #ifdef CONFIG_F2FS_FS_DATA_SEPARATION - f2fs_init_block_age_info(sbi); + f2fs_init_data_seperation_info(sbi); #endif f2fs_tuning_parameters(sbi); @@ -4673,9 +4677,18 @@ static int __init init_f2fs_fs(void) err = f2fs_create_extent_cache(); if (err) goto free_recovery_cache; +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + err = f2fs_create_age_extent_cache(); + if (err) + goto free_extent_cache; +#endif err = f2fs_create_garbage_collection_cache(); if (err) +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + goto free_age_extent_cache; +#else goto free_extent_cache; +#endif err = f2fs_init_sysfs(); if (err) goto free_garbage_collection_cache; @@ -4729,6 +4742,10 @@ static int __init init_f2fs_fs(void) f2fs_exit_sysfs(); free_garbage_collection_cache: f2fs_destroy_garbage_collection_cache(); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION +free_age_extent_cache: + f2fs_destroy_age_extent_cache(); +#endif free_extent_cache: f2fs_destroy_extent_cache(); free_recovery_cache: @@ -4761,6 +4778,9 @@ static void __exit exit_f2fs_fs(void) f2fs_destroy_garbage_collection_cache(); f2fs_destroy_extent_cache(); f2fs_destroy_recovery_cache(); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION + f2fs_destroy_age_extent_cache(); +#endif f2fs_destroy_checkpoint_caches(); f2fs_destroy_segment_manager_caches(); f2fs_destroy_node_manager_caches(); diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index c6b372401c27..b19c057ff801 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -160,6 +160,11 @@ struct extent_info; struct victim_sel_policy; struct f2fs_map_blocks; +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION +struct age_extent_tree; +struct age_extent_info; +#endif + DECLARE_EVENT_CLASS(f2fs__inode, TP_PROTO(struct inode *inode), @@ -1659,6 +1664,240 @@ TRACE_EVENT(f2fs_destroy_extent_tree, __entry->node_cnt) ); +#ifdef CONFIG_F2FS_FS_DATA_SEPARATION +DECLARE_EVENT_CLASS(f2fs_add_age_extent_node, + + TP_PROTO(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei), + + TP_ARGS(sbi, et, ei), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(unsigned int, cnt) + __field(unsigned int, fofs) + __field(unsigned int, len) + __field(unsigned long long, age) + __field(unsigned long long, blocks) + ), + + TP_fast_assign( + __entry->dev = sbi->sb->s_dev; + __entry->ino = et->ino; + __entry->cnt = atomic_read(&et->node_cnt); + __entry->fofs = ei->fofs; + __entry->len = ei->len; + __entry->age = ei->age; + __entry->blocks = ei->last_blocks; + ), + + TP_printk("dev = (%d,%d), ino = %lu, node_cnt = %lu, " + "age_ext_info(fofs: %u, len: %u, age: %llu, blocks: %llu)", + show_dev_ino(__entry), + __entry->cnt, + __entry->fofs, + __entry->len, + __entry->age, + __entry->blocks) +); + +DEFINE_EVENT(f2fs_add_age_extent_node, f2fs_attach_age_extent_node, + + TP_PROTO(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei), + + TP_ARGS(sbi, et, ei) +); + +DEFINE_EVENT(f2fs_add_age_extent_node, f2fs_merged_age_extent_node, + + TP_PROTO(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei), + + TP_ARGS(sbi, et, ei) +); + +DEFINE_EVENT(f2fs_add_age_extent_node, f2fs_detach_age_extent_node, + + TP_PROTO(struct f2fs_sb_info *sbi, + struct age_extent_tree *et, struct age_extent_info *ei), + + TP_ARGS(sbi, et, ei) +); + +TRACE_EVENT(f2fs_lookup_age_extent_tree_start, + + TP_PROTO(struct inode *inode, unsigned int pgofs), + + TP_ARGS(inode, pgofs), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(unsigned int, pgofs) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->pgofs = pgofs; + ), + + TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u", + show_dev_ino(__entry), + __entry->pgofs) +); + +TRACE_EVENT_CONDITION(f2fs_lookup_age_extent_tree_end, + + TP_PROTO(struct inode *inode, unsigned int pgofs, + struct age_extent_info *ei), + + TP_ARGS(inode, pgofs, ei), + + TP_CONDITION(ei), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(unsigned int, pgofs) + __field(unsigned int, fofs) + __field(unsigned int, len) + __field(unsigned long long, age) + __field(unsigned long long, blocks) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->pgofs = pgofs; + __entry->fofs = ei->fofs; + __entry->len = ei->len; + __entry->age = ei->age; + __entry->blocks = ei->last_blocks; + ), + + TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u, " + "age_ext_info(fofs: %u, len: %u, age: %llu, blocks: %llu)", + show_dev_ino(__entry), + __entry->pgofs, + __entry->fofs, + __entry->len, + __entry->age, + __entry->blocks) +); + +TRACE_EVENT(f2fs_update_age_extent_tree_range, + + TP_PROTO(struct inode *inode, unsigned int pgofs, unsigned int len, + unsigned long long age, + unsigned long long last_blks), + + TP_ARGS(inode, pgofs, len, age, last_blks), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(unsigned int, pgofs) + __field(unsigned int, len) + __field(unsigned long long, age) + __field(unsigned long long, blocks) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->pgofs = pgofs; + __entry->len = len; + __entry->age = age; + __entry->blocks = last_blks; + ), + + TP_printk("dev = (%d,%d), ino = %lu, pgofs = %u, " + "len = %u, age = %llu, blocks = %llu", + show_dev_ino(__entry), + __entry->pgofs, + __entry->len, + __entry->age, + __entry->blocks) +); + +TRACE_EVENT(f2fs_shrink_age_extent_tree, + + TP_PROTO(struct f2fs_sb_info *sbi, int nr_shrink, + unsigned int node_cnt, unsigned int tree_cnt), + + TP_ARGS(sbi, nr_shrink, node_cnt, tree_cnt), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(int, nr_shrink) + __field(unsigned int, node_cnt) + __field(unsigned int, tree_cnt) + ), + + TP_fast_assign( + __entry->dev = sbi->sb->s_dev; + __entry->nr_shrink = nr_shrink; + __entry->node_cnt = node_cnt; + __entry->tree_cnt = tree_cnt; + ), + + TP_printk("dev = (%d,%d), nr_shrink = %d, shrunk: node_cnt = %u, tree_cnt = %u", + show_dev(__entry->dev), + __entry->nr_shrink, + __entry->node_cnt, + __entry->tree_cnt) +); + +TRACE_EVENT(f2fs_init_age_extent_tree, + + TP_PROTO(struct inode *inode, unsigned int node_cnt), + + TP_ARGS(inode, node_cnt), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(unsigned int, node_cnt) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->node_cnt = node_cnt; + ), + + TP_printk("dev = (%d,%d), ino = %lu, node_cnt = %u", + show_dev_ino(__entry), + __entry->node_cnt) +); + +TRACE_EVENT(f2fs_destroy_age_extent_tree, + + TP_PROTO(struct inode *inode, unsigned int node_cnt), + + TP_ARGS(inode, node_cnt), + + TP_STRUCT__entry( + __field(dev_t, dev) + __field(ino_t, ino) + __field(unsigned int, node_cnt) + ), + + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->ino = inode->i_ino; + __entry->node_cnt = node_cnt; + ), + + TP_printk("dev = (%d,%d), ino = %lu, destroyed: node_cnt = %u", + show_dev_ino(__entry), + __entry->node_cnt) +); +#endif + DECLARE_EVENT_CLASS(f2fs_sync_dirty_inodes, TP_PROTO(struct super_block *sb, int type, s64 count), -- 2.36.1