diff options
Diffstat (limited to 'fs/f2fs/node.c')
| -rw-r--r-- | fs/f2fs/node.c | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index e42934e689c5..3df43b4efd89 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); |