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Diffstat (limited to 'fs/f2fs/node.c')
-rw-r--r--fs/f2fs/node.c136
1 files changed, 83 insertions, 53 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 789843003..b9c8d9a9c 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -55,8 +55,8 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type)
* give 25%, 25%, 50%, 50%, 50% memory for each components respectively
*/
if (type == FREE_NIDS) {
- mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >>
- PAGE_SHIFT;
+ mem_size = (nm_i->nid_cnt[FREE_NID_LIST] *
+ sizeof(struct free_nid)) >> PAGE_SHIFT;
res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
} else if (type == NAT_ENTRIES) {
mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >>
@@ -1713,10 +1713,31 @@ static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i,
struct free_nid *i)
{
- list_del(&i->list);
radix_tree_delete(&nm_i->free_nid_root, i->nid);
}
+static void __insert_nid_to_list(struct f2fs_sb_info *sbi,
+ struct free_nid *i, enum nid_list list)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+
+ f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW :
+ i->state != NID_ALLOC);
+ nm_i->nid_cnt[list]++;
+ list_add_tail(&i->list, &nm_i->nid_list[list]);
+}
+
+static void __remove_nid_from_list(struct f2fs_sb_info *sbi,
+ struct free_nid *i, enum nid_list list)
+{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
+
+ f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW :
+ i->state != NID_ALLOC);
+ nm_i->nid_cnt[list]--;
+ list_del(&i->list);
+}
+
static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
@@ -1747,33 +1768,33 @@ static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
return 0;
}
- spin_lock(&nm_i->free_nid_list_lock);
+ spin_lock(&nm_i->nid_list_lock);
if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) {
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
radix_tree_preload_end();
kmem_cache_free(free_nid_slab, i);
return 0;
}
- list_add_tail(&i->list, &nm_i->free_nid_list);
- nm_i->fcnt++;
- spin_unlock(&nm_i->free_nid_list_lock);
+ __insert_nid_to_list(sbi, i, FREE_NID_LIST);
+ spin_unlock(&nm_i->nid_list_lock);
radix_tree_preload_end();
return 1;
}
-static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid)
+static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
{
+ struct f2fs_nm_info *nm_i = NM_I(sbi);
struct free_nid *i;
bool need_free = false;
- spin_lock(&nm_i->free_nid_list_lock);
+ spin_lock(&nm_i->nid_list_lock);
i = __lookup_free_nid_list(nm_i, nid);
if (i && i->state == NID_NEW) {
+ __remove_nid_from_list(sbi, i, FREE_NID_LIST);
__del_from_free_nid_list(nm_i, i);
- nm_i->fcnt--;
need_free = true;
}
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
if (need_free)
kmem_cache_free(free_nid_slab, i);
@@ -1812,7 +1833,7 @@ void __build_free_nids(struct f2fs_sb_info *sbi)
nid_t nid = nm_i->next_scan_nid;
/* Enough entries */
- if (nm_i->fcnt >= NAT_ENTRY_PER_BLOCK)
+ if (nm_i->nid_cnt[FREE_NID_LIST] >= NAT_ENTRY_PER_BLOCK)
return;
/* readahead nat pages to be scanned */
@@ -1848,7 +1869,7 @@ void __build_free_nids(struct f2fs_sb_info *sbi)
if (addr == NULL_ADDR)
add_free_nid(sbi, nid, true);
else
- remove_free_nid(nm_i, nid);
+ remove_free_nid(sbi, nid);
}
up_read(&curseg->journal_rwsem);
up_read(&nm_i->nat_tree_lock);
@@ -1881,23 +1902,22 @@ retry:
if (unlikely(sbi->total_valid_node_count + 1 > nm_i->available_nids))
return false;
- spin_lock(&nm_i->free_nid_list_lock);
+ spin_lock(&nm_i->nid_list_lock);
/* We should not use stale free nids created by build_free_nids */
- if (nm_i->fcnt && !on_build_free_nids(nm_i)) {
- f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
- list_for_each_entry(i, &nm_i->free_nid_list, list)
- if (i->state == NID_NEW)
- break;
-
- f2fs_bug_on(sbi, i->state != NID_NEW);
+ if (nm_i->nid_cnt[FREE_NID_LIST] && !on_build_free_nids(nm_i)) {
+ f2fs_bug_on(sbi, list_empty(&nm_i->nid_list[FREE_NID_LIST]));
+ i = list_first_entry(&nm_i->nid_list[FREE_NID_LIST],
+ struct free_nid, list);
*nid = i->nid;
+
+ __remove_nid_from_list(sbi, i, FREE_NID_LIST);
i->state = NID_ALLOC;
- nm_i->fcnt--;
- spin_unlock(&nm_i->free_nid_list_lock);
+ __insert_nid_to_list(sbi, i, ALLOC_NID_LIST);
+ spin_unlock(&nm_i->nid_list_lock);
return true;
}
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
/* Let's scan nat pages and its caches to get free nids */
build_free_nids(sbi);
@@ -1912,11 +1932,12 @@ void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid)
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct free_nid *i;
- spin_lock(&nm_i->free_nid_list_lock);
+ spin_lock(&nm_i->nid_list_lock);
i = __lookup_free_nid_list(nm_i, nid);
- f2fs_bug_on(sbi, !i || i->state != NID_ALLOC);
+ f2fs_bug_on(sbi, !i);
+ __remove_nid_from_list(sbi, i, ALLOC_NID_LIST);
__del_from_free_nid_list(nm_i, i);
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
kmem_cache_free(free_nid_slab, i);
}
@@ -1933,17 +1954,20 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
if (!nid)
return;
- spin_lock(&nm_i->free_nid_list_lock);
+ spin_lock(&nm_i->nid_list_lock);
i = __lookup_free_nid_list(nm_i, nid);
- f2fs_bug_on(sbi, !i || i->state != NID_ALLOC);
+ f2fs_bug_on(sbi, !i);
+
+ __remove_nid_from_list(sbi, i, ALLOC_NID_LIST);
+
if (!available_free_memory(sbi, FREE_NIDS)) {
__del_from_free_nid_list(nm_i, i);
need_free = true;
} else {
i->state = NID_NEW;
- nm_i->fcnt++;
+ __insert_nid_to_list(sbi, i, FREE_NID_LIST);
}
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
if (need_free)
kmem_cache_free(free_nid_slab, i);
@@ -1955,24 +1979,26 @@ int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
struct free_nid *i, *next;
int nr = nr_shrink;
- if (nm_i->fcnt <= MAX_FREE_NIDS)
+ if (nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS)
return 0;
if (!mutex_trylock(&nm_i->build_lock))
return 0;
- spin_lock(&nm_i->free_nid_list_lock);
- list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) {
- if (nr_shrink <= 0 || nm_i->fcnt <= MAX_FREE_NIDS)
+ spin_lock(&nm_i->nid_list_lock);
+ list_for_each_entry_safe(i, next, &nm_i->nid_list[FREE_NID_LIST],
+ list) {
+ if (nr_shrink <= 0 ||
+ nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS)
break;
- if (i->state == NID_ALLOC)
- continue;
+
+ __remove_nid_from_list(sbi, i, FREE_NID_LIST);
__del_from_free_nid_list(nm_i, i);
+
kmem_cache_free(free_nid_slab, i);
- nm_i->fcnt--;
nr_shrink--;
}
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
mutex_unlock(&nm_i->build_lock);
return nr - nr_shrink;
@@ -2028,7 +2054,7 @@ recover_xnid:
if (unlikely(!inc_valid_node_count(sbi, inode)))
f2fs_bug_on(sbi, 1);
- remove_free_nid(NM_I(sbi), new_xnid);
+ remove_free_nid(sbi, new_xnid);
get_node_info(sbi, new_xnid, &ni);
ni.ino = inode->i_ino;
set_node_addr(sbi, &ni, NEW_ADDR, false);
@@ -2058,7 +2084,7 @@ retry:
}
/* Should not use this inode from free nid list */
- remove_free_nid(NM_I(sbi), ino);
+ remove_free_nid(sbi, ino);
if (!PageUptodate(ipage))
SetPageUptodate(ipage);
@@ -2292,20 +2318,22 @@ static int init_node_manager(struct f2fs_sb_info *sbi)
/* not used nids: 0, node, meta, (and root counted as valid node) */
nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM;
- nm_i->fcnt = 0;
+ nm_i->nid_cnt[FREE_NID_LIST] = 0;
+ nm_i->nid_cnt[ALLOC_NID_LIST] = 0;
nm_i->nat_cnt = 0;
nm_i->ram_thresh = DEF_RAM_THRESHOLD;
nm_i->ra_nid_pages = DEF_RA_NID_PAGES;
nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD;
INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC);
- INIT_LIST_HEAD(&nm_i->free_nid_list);
+ INIT_LIST_HEAD(&nm_i->nid_list[FREE_NID_LIST]);
+ INIT_LIST_HEAD(&nm_i->nid_list[ALLOC_NID_LIST]);
INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO);
INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO);
INIT_LIST_HEAD(&nm_i->nat_entries);
mutex_init(&nm_i->build_lock);
- spin_lock_init(&nm_i->free_nid_list_lock);
+ spin_lock_init(&nm_i->nid_list_lock);
init_rwsem(&nm_i->nat_tree_lock);
nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid);
@@ -2350,17 +2378,19 @@ void destroy_node_manager(struct f2fs_sb_info *sbi)
return;
/* destroy free nid list */
- spin_lock(&nm_i->free_nid_list_lock);
- list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) {
- f2fs_bug_on(sbi, i->state == NID_ALLOC);
+ spin_lock(&nm_i->nid_list_lock);
+ list_for_each_entry_safe(i, next_i, &nm_i->nid_list[FREE_NID_LIST],
+ list) {
+ __remove_nid_from_list(sbi, i, FREE_NID_LIST);
__del_from_free_nid_list(nm_i, i);
- nm_i->fcnt--;
- spin_unlock(&nm_i->free_nid_list_lock);
+ spin_unlock(&nm_i->nid_list_lock);
kmem_cache_free(free_nid_slab, i);
- spin_lock(&nm_i->free_nid_list_lock);
+ spin_lock(&nm_i->nid_list_lock);
}
- f2fs_bug_on(sbi, nm_i->fcnt);
- spin_unlock(&nm_i->free_nid_list_lock);
+ f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID_LIST]);
+ f2fs_bug_on(sbi, nm_i->nid_cnt[ALLOC_NID_LIST]);
+ f2fs_bug_on(sbi, !list_empty(&nm_i->nid_list[ALLOC_NID_LIST]));
+ spin_unlock(&nm_i->nid_list_lock);
/* destroy nat cache */
down_write(&nm_i->nat_tree_lock);
generated by cgit v1.2.3 (git 2.39.1) at 2026-03-14 09:29:38 +0000