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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-09-05 12:20:59 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:38 +0900
commitf1e89c86fdd0f5e59f6768146c86437934202033 (patch)
treec5ba8766a3a029f0c10d6d0d09a57a7e28b7a51b /fs/nilfs2/cpfile.c
parentc1c1d7092072093ad960db2f6c08f06705c57fa4 (diff)
downloadop-kernel-dev-f1e89c86fdd0f5e59f6768146c86437934202033.zip
op-kernel-dev-f1e89c86fdd0f5e59f6768146c86437934202033.tar.gz
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>
Diffstat (limited to 'fs/nilfs2/cpfile.c')
-rw-r--r--fs/nilfs2/cpfile.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index 1873781..03de1da 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -933,27 +933,40 @@ int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat)
}
/**
- * nilfs_cpfile_read - read cpfile inode
- * @cpfile: cpfile inode
- * @raw_inode: on-disk cpfile inode
- */
-int nilfs_cpfile_read(struct inode *cpfile, struct nilfs_inode *raw_inode)
-{
- return nilfs_read_inode_common(cpfile, raw_inode);
-}
-
-/**
- * nilfs_cpfile_new - create cpfile
- * @nilfs: nilfs object
+ * nilfs_cpfile_read - read or get cpfile inode
+ * @sb: super block instance
* @cpsize: size of a checkpoint entry
+ * @raw_inode: on-disk cpfile inode
+ * @inodep: buffer to store the inode
*/
-struct inode *nilfs_cpfile_new(struct the_nilfs *nilfs, size_t cpsize)
+int nilfs_cpfile_read(struct super_block *sb, size_t cpsize,
+ struct nilfs_inode *raw_inode, struct inode **inodep)
{
struct inode *cpfile;
+ int err;
- cpfile = nilfs_mdt_new(nilfs, NULL, NILFS_CPFILE_INO, 0);
- if (cpfile)
- nilfs_mdt_set_entry_size(cpfile, cpsize,
- sizeof(struct nilfs_cpfile_header));
- return cpfile;
+ cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO);
+ if (unlikely(!cpfile))
+ return -ENOMEM;
+ if (!(cpfile->i_state & I_NEW))
+ goto out;
+
+ err = nilfs_mdt_init(cpfile, NILFS_MDT_GFP, 0);
+ if (err)
+ goto failed;
+
+ nilfs_mdt_set_entry_size(cpfile, cpsize,
+ sizeof(struct nilfs_cpfile_header));
+
+ err = nilfs_read_inode_common(cpfile, raw_inode);
+ if (err)
+ goto failed;
+
+ unlock_new_inode(cpfile);
+ out:
+ *inodep = cpfile;
+ return 0;
+ failed:
+ iget_failed(cpfile);
+ return err;
}
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