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-rw-r--r--fs/f2fs/node.c2
-rw-r--r--fs/f2fs/super.c4
-rw-r--r--include/linux/f2fs_fs.h3
3 files changed, 6 insertions, 3 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index b4d964029fc7..044395c20ee9 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1957,7 +1957,7 @@ static int init_node_manager(struct f2fs_sb_info *sbi)
nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks;
/* not used nids: 0, node, meta, (and root counted as valid node) */
- nm_i->available_nids = nm_i->max_nid - 3;
+ nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM;
nm_i->fcnt = 0;
nm_i->nat_cnt = 0;
nm_i->ram_thresh = DEF_RAM_THRESHOLD;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index ddb1e9d36363..0f61f5aa587c 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -508,8 +508,8 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count;
buf->f_bavail = user_block_count - valid_user_blocks(sbi);
- buf->f_files = sbi->total_node_count;
- buf->f_ffree = sbi->total_node_count - valid_inode_count(sbi);
+ buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM;
+ buf->f_ffree = buf->f_files - valid_inode_count(sbi);
buf->f_namelen = F2FS_NAME_LEN;
buf->f_fsid.val[0] = (u32)id;
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 6ff0b0b42d47..0ed77f32c9ac 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -24,6 +24,9 @@
#define NULL_ADDR ((block_t)0) /* used as block_t addresses */
#define NEW_ADDR ((block_t)-1) /* used as block_t addresses */
+/* 0, 1(node nid), 2(meta nid) are reserved node id */
+#define F2FS_RESERVED_NODE_NUM 3
+
#define F2FS_ROOT_INO(sbi) (sbi->root_ino_num)
#define F2FS_NODE_INO(sbi) (sbi->node_ino_num)
#define F2FS_META_INO(sbi) (sbi->meta_ino_num)