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f2fs: clean up free nid list operations 

This patch cleans up to use consistent free nid list ops.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-10-12 10:09:59 -07:00
parent b8559dc242
commit eb0aa4b807
1 changed files with 26 additions and 30 deletions
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56
fs/f2fs/node.c
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@ -1695,25 +1695,26 @@ static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
return radix_tree_lookup(&nm_i->free_nid_root, n);
}
static void __del_from_free_nid_list(struct f2fs_nm_info *nm_i,
struct free_nid *i)
{
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)
static int __insert_nid_to_list(struct f2fs_sb_info *sbi,
struct free_nid *i, enum nid_list list, bool new)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
if (new) {
int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i);
if (err)
return err;
}
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]);
return 0;
}
static void __remove_nid_from_list(struct f2fs_sb_info *sbi,
struct free_nid *i, enum nid_list list)
struct free_nid *i, enum nid_list list, bool reuse)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
@ -1721,6 +1722,8 @@ static void __remove_nid_from_list(struct f2fs_sb_info *sbi,
i->state != NID_ALLOC);
nm_i->nid_cnt[list]--;
list_del(&i->list);
if (!reuse)
radix_tree_delete(&nm_i->free_nid_root, i->nid);
}
static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
@ -1728,6 +1731,7 @@ static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct free_nid *i;
struct nat_entry *ne;
int err;
if (!available_free_memory(sbi, FREE_NIDS))
return -1;
@ -1754,15 +1758,13 @@ static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build)
}
spin_lock(&nm_i->nid_list_lock);
if (radix_tree_insert(&nm_i->free_nid_root, i->nid, i)) {
spin_unlock(&nm_i->nid_list_lock);
radix_tree_preload_end();
err = __insert_nid_to_list(sbi, i, FREE_NID_LIST, true);
spin_unlock(&nm_i->nid_list_lock);
radix_tree_preload_end();
if (err) {
kmem_cache_free(free_nid_slab, i);
return 0;
}
__insert_nid_to_list(sbi, i, FREE_NID_LIST);
spin_unlock(&nm_i->nid_list_lock);
radix_tree_preload_end();
return 1;
}
@ -1775,8 +1777,7 @@ static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
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);
__remove_nid_from_list(sbi, i, FREE_NID_LIST, false);
need_free = true;
}
spin_unlock(&nm_i->nid_list_lock);
@ -1896,9 +1897,9 @@ retry:
struct free_nid, list);
*nid = i->nid;
__remove_nid_from_list(sbi, i, FREE_NID_LIST);
__remove_nid_from_list(sbi, i, FREE_NID_LIST, true);
i->state = NID_ALLOC;
__insert_nid_to_list(sbi, i, ALLOC_NID_LIST);
__insert_nid_to_list(sbi, i, ALLOC_NID_LIST, false);
spin_unlock(&nm_i->nid_list_lock);
return true;
}
@ -1920,8 +1921,7 @@ void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid)
spin_lock(&nm_i->nid_list_lock);
i = __lookup_free_nid_list(nm_i, nid);
f2fs_bug_on(sbi, !i);
__remove_nid_from_list(sbi, i, ALLOC_NID_LIST);
__del_from_free_nid_list(nm_i, i);
__remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false);
spin_unlock(&nm_i->nid_list_lock);
kmem_cache_free(free_nid_slab, i);
@ -1943,14 +1943,13 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
i = __lookup_free_nid_list(nm_i, nid);
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);
__remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false);
need_free = true;
} else {
__remove_nid_from_list(sbi, i, ALLOC_NID_LIST, true);
i->state = NID_NEW;
__insert_nid_to_list(sbi, i, FREE_NID_LIST);
__insert_nid_to_list(sbi, i, FREE_NID_LIST, false);
}
spin_unlock(&nm_i->nid_list_lock);
@ -1977,9 +1976,7 @@ int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS)
break;
__remove_nid_from_list(sbi, i, FREE_NID_LIST);
__del_from_free_nid_list(nm_i, i);
__remove_nid_from_list(sbi, i, FREE_NID_LIST, false);
kmem_cache_free(free_nid_slab, i);
nr_shrink--;
}
@ -2366,8 +2363,7 @@ void destroy_node_manager(struct f2fs_sb_info *sbi)
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);
__remove_nid_from_list(sbi, i, FREE_NID_LIST, false);
spin_unlock(&nm_i->nid_list_lock);
kmem_cache_free(free_nid_slab, i);
spin_lock(&nm_i->nid_list_lock);