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Commit fc4fff82 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Christoph Hellwig
Browse files

hfsplus: clean up hfsplus_iget 



Add a new hfsplus_system_read_inode for reading the special system inodes
and streamline the fastpath iget code.

Signed-off-by: default avatarChristoph Hellwig <hch@tuxera.com>
parent 6af502de

fs/hfsplus/super.c

+40 −37
Original line number Diff line number Diff line
@@ -20,40 +20,11 @@ static void hfsplus_destroy_inode(struct inode *inode); 


#include "hfsplus_fs.h"



struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)

static int hfsplus_system_read_inode(struct inode *inode)

{

	struct hfs_find_data fd;

	struct hfsplus_vh *vhdr;

	struct inode *inode;

	long err = -EIO;



	inode = iget_locked(sb, ino);

	if (!inode)

		return ERR_PTR(-ENOMEM);

	if (!(inode->i_state & I_NEW))

		return inode;



	INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);

	mutex_init(&HFSPLUS_I(inode)->extents_lock);

	HFSPLUS_I(inode)->flags = 0;

	HFSPLUS_I(inode)->rsrc_inode = NULL;

	atomic_set(&HFSPLUS_I(inode)->opencnt, 0);

	struct hfsplus_vh *vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr;



	if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {

	read_inode:

		hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);

		err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);

		if (!err)

			err = hfsplus_cat_read_inode(inode, &fd);

		hfs_find_exit(&fd);

		if (err)

			goto bad_inode;

		goto done;

	}

	vhdr = HFSPLUS_SB(inode->i_sb)->s_vhdr;

	switch (inode->i_ino) {

	case HFSPLUS_ROOT_CNID:

		goto read_inode;

	case HFSPLUS_EXT_CNID:

		hfsplus_inode_read_fork(inode, &vhdr->ext_file);

		inode->i_mapping->a_ops = &hfsplus_btree_aops;
@@ -74,18 +45,50 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino) 
		inode->i_mapping->a_ops = &hfsplus_btree_aops;

		break;

	default:

		goto bad_inode;

		return -EIO;

	}



done:

	unlock_new_inode(inode);

	return 0;

}



struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)

{

	struct hfs_find_data fd;

	struct inode *inode;

	int err;



	inode = iget_locked(sb, ino);

	if (!inode)

		return ERR_PTR(-ENOMEM);

	if (!(inode->i_state & I_NEW))

		return inode;



bad_inode:

	INIT_LIST_HEAD(&HFSPLUS_I(inode)->open_dir_list);

	mutex_init(&HFSPLUS_I(inode)->extents_lock);

	HFSPLUS_I(inode)->flags = 0;

	HFSPLUS_I(inode)->rsrc_inode = NULL;

	atomic_set(&HFSPLUS_I(inode)->opencnt, 0);



	if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||

	    inode->i_ino == HFSPLUS_ROOT_CNID) {

		hfs_find_init(HFSPLUS_SB(inode->i_sb)->cat_tree, &fd);

		err = hfsplus_find_cat(inode->i_sb, inode->i_ino, &fd);

		if (!err)

			err = hfsplus_cat_read_inode(inode, &fd);

		hfs_find_exit(&fd);

	} else {

		err = hfsplus_system_read_inode(inode);

	}



	if (err) {

		iget_failed(inode);

		return ERR_PTR(err);

	}



	unlock_new_inode(inode);

	return inode;

}



static int hfsplus_write_inode(struct inode *inode,

		struct writeback_control *wbc)

{