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-rw-r--r--fs/f2fs/node.c34
1 files changed, 18 insertions, 16 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e42934e689c..3df43b4efd8 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1249,9 +1249,11 @@ static void __del_from_free_nid_list(struct free_nid *i)
kmem_cache_free(free_nid_slab, i);
}
-static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid)
+static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid, bool build)
{
struct free_nid *i;
+ struct nat_entry *ne;
+ bool allocated = false;
if (nm_i->fcnt > 2 * MAX_FREE_NIDS)
return -1;
@@ -1259,6 +1261,18 @@ static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid)
/* 0 nid should not be used */
if (nid == 0)
return 0;
+
+ if (!build)
+ goto retry;
+
+ /* do not add allocated nids */
+ read_lock(&nm_i->nat_tree_lock);
+ ne = __lookup_nat_cache(nm_i, nid);
+ if (ne && nat_get_blkaddr(ne) != NULL_ADDR)
+ allocated = true;
+ read_unlock(&nm_i->nat_tree_lock);
+ if (allocated)
+ return 0;
retry:
i = kmem_cache_alloc(free_nid_slab, GFP_NOFS);
if (!i) {
@@ -1309,7 +1323,7 @@ static void scan_nat_page(struct f2fs_nm_info *nm_i,
blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr);
BUG_ON(blk_addr == NEW_ADDR);
if (blk_addr == NULL_ADDR) {
- if (add_free_nid(nm_i, start_nid) < 0)
+ if (add_free_nid(nm_i, start_nid, true) < 0)
break;
}
}
@@ -1317,7 +1331,6 @@ static void scan_nat_page(struct f2fs_nm_info *nm_i,
static void build_free_nids(struct f2fs_sb_info *sbi)
{
- struct free_nid *fnid, *next_fnid;
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
@@ -1354,22 +1367,11 @@ static void build_free_nids(struct f2fs_sb_info *sbi)
block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr);
nid = le32_to_cpu(nid_in_journal(sum, i));
if (addr == NULL_ADDR)
- add_free_nid(nm_i, nid);
+ add_free_nid(nm_i, nid, true);
else
remove_free_nid(nm_i, nid);
}
mutex_unlock(&curseg->curseg_mutex);
-
- /* remove the free nids from current allocated nids */
- list_for_each_entry_safe(fnid, next_fnid, &nm_i->free_nid_list, list) {
- struct nat_entry *ne;
-
- read_lock(&nm_i->nat_tree_lock);
- ne = __lookup_nat_cache(nm_i, fnid->nid);
- if (ne && nat_get_blkaddr(ne) != NULL_ADDR)
- remove_free_nid(nm_i, fnid->nid);
- read_unlock(&nm_i->nat_tree_lock);
- }
}
/*
@@ -1659,7 +1661,7 @@ flush_now:
}
if (nat_get_blkaddr(ne) == NULL_ADDR &&
- add_free_nid(NM_I(sbi), nid) <= 0) {
+ add_free_nid(NM_I(sbi), nid, false) <= 0) {
write_lock(&nm_i->nat_tree_lock);
__del_from_nat_cache(nm_i, ne);
write_unlock(&nm_i->nat_tree_lock);