From: xiongping1 <xiongpi...@xiaomi.com>
Signed-off-by: xiongping1 <xiongpi...@xiaomi.com>
Signed-off-by: qixiaoyu1 <qixiao...@xiaomi.com>
---
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 <trace/events/f2fs.h>
+
+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
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