nilfs2: use iget for all metadata files

This makes use of iget5_locked to allocate or get inode for metadata
files to stop using own inode allocator.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

1 files changed, 14 insertions, 7 deletions

diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 5893cb27c909..39e7d7f8eda0 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -356,6 +356,10 @@ static void nilfs_put_super(struct super_block *sb)
                 up_write(&nilfs->ns_sem);
         }
 
+        iput(nilfs->ns_sufile);
+        iput(nilfs->ns_cpfile);
+        iput(nilfs->ns_dat);
+
         destroy_nilfs(nilfs);
         sbi->s_super = NULL;
         sb->s_fs_info = NULL;
@@ -403,10 +407,6 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
         if (root->ifile)
                 goto reuse; /* already attached checkpoint */
 
-        root->ifile = nilfs_ifile_new(sbi, nilfs->ns_inode_size);
-        if (!root->ifile)
-                goto failed;
-
         down_read(&nilfs->ns_segctor_sem);
         err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, cno, 0, &raw_cp,
                                           &bh_cp);
@@ -421,8 +421,10 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
                 }
                 goto failed;
         }
-        err = nilfs_read_inode_common(root->ifile, &raw_cp->cp_ifile_inode);
-        if (unlikely(err))
+
+        err = nilfs_ifile_read(sbi->s_super, root, nilfs->ns_inode_size,
+                               &raw_cp->cp_ifile_inode, &root->ifile);
+        if (err)
                 goto failed_bh;
 
         atomic_set(&root->inodes_count, le64_to_cpu(raw_cp->cp_inodes_count));
@@ -895,7 +897,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
         if (err) {
                 printk(KERN_ERR "NILFS: error loading last checkpoint "
                        "(checkpoint number=%llu).\n", (unsigned long long)cno);
-                goto failed_nilfs;
+                goto failed_unload;
         }
 
         if (!(sb->s_flags & MS_RDONLY)) {
@@ -924,6 +926,11 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent)
  failed_checkpoint:
         nilfs_put_root(fsroot);
 
+ failed_unload:
+        iput(nilfs->ns_sufile);
+        iput(nilfs->ns_cpfile);
+        iput(nilfs->ns_dat);
+
  failed_nilfs:
         destroy_nilfs(nilfs);