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>
diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c
index 922d9dd..9f8a2da 100644
--- a/fs/nilfs2/ifile.c
+++ b/fs/nilfs2/ifile.c
@@ -161,25 +161,46 @@
}
/**
- * nilfs_ifile_new - create inode file
- * @sbi: nilfs_sb_info struct
+ * nilfs_ifile_read - read or get ifile inode
+ * @sb: super block instance
+ * @root: root object
* @inode_size: size of an inode
+ * @raw_inode: on-disk ifile inode
+ * @inodep: buffer to store the inode
*/
-struct inode *nilfs_ifile_new(struct nilfs_sb_info *sbi, size_t inode_size)
+int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
+ size_t inode_size, struct nilfs_inode *raw_inode,
+ struct inode **inodep)
{
struct inode *ifile;
int err;
- ifile = nilfs_mdt_new(sbi->s_nilfs, sbi->s_super, NILFS_IFILE_INO,
- sizeof(struct nilfs_ifile_info));
- if (ifile) {
- err = nilfs_palloc_init_blockgroup(ifile, inode_size);
- if (unlikely(err)) {
- nilfs_mdt_destroy(ifile);
- return NULL;
- }
- nilfs_palloc_setup_cache(ifile,
- &NILFS_IFILE_I(ifile)->palloc_cache);
- }
- return ifile;
+ ifile = nilfs_iget_locked(sb, root, NILFS_IFILE_INO);
+ if (unlikely(!ifile))
+ return -ENOMEM;
+ if (!(ifile->i_state & I_NEW))
+ goto out;
+
+ err = nilfs_mdt_init(ifile, NILFS_MDT_GFP,
+ sizeof(struct nilfs_ifile_info));
+ if (err)
+ goto failed;
+
+ err = nilfs_palloc_init_blockgroup(ifile, inode_size);
+ if (err)
+ goto failed;
+
+ nilfs_palloc_setup_cache(ifile, &NILFS_IFILE_I(ifile)->palloc_cache);
+
+ err = nilfs_read_inode_common(ifile, raw_inode);
+ if (err)
+ goto failed;
+
+ unlock_new_inode(ifile);
+ out:
+ *inodep = ifile;
+ return 0;
+ failed:
+ iget_failed(ifile);
+ return err;
}