[net-next-2.6.git] / fs / jffs2 / jffs2_fs_i.h

/*
 * JFFS2 -- Journalling Flash File System, Version 2.
 *
 * Copyright © 2001-2007 Red Hat, Inc.
 *
 * Created by David Woodhouse <dwmw2@infradead.org>
 *
 * For licensing information, see the file 'LICENCE' in this directory.
 *
 */

#ifndef _JFFS2_FS_I
#define _JFFS2_FS_I

#include <linux/version.h>
#include <linux/rbtree.h>
#include <linux/posix_acl.h>
#include <linux/semaphore.h>

struct jffs2_inode_info {
	/* We need an internal mutex similar to inode->i_mutex.
	   Unfortunately, we can't used the existing one, because
	   either the GC would deadlock, or we'd have to release it
	   before letting GC proceed. Or we'd have to put ugliness
	   into the GC code so it didn't attempt to obtain the i_mutex
	   for the inode(s) which are already locked */
	struct semaphore sem;

	/* The highest (datanode) version number used for this ino */
	uint32_t highest_version;

	/* List of data fragments which make up the file */
	struct rb_root fragtree;

	/* There may be one datanode which isn't referenced by any of the
	   above fragments, if it contains a metadata update but no actual
	   data - or if this is a directory inode */
	/* This also holds the _only_ dnode for symlinks/device nodes,
	   etc. */
	struct jffs2_full_dnode *metadata;

	/* Directory entries */
	struct jffs2_full_dirent *dents;

	/* The target path if this is the inode of a symlink */
	unsigned char *target;

	/* Some stuff we just have to keep in-core at all times, for each inode. */
	struct jffs2_inode_cache *inocache;

	uint16_t flags;
	uint8_t usercompr;
	struct inode vfs_inode;
#ifdef CONFIG_JFFS2_FS_POSIX_ACL
	struct posix_acl *i_acl_access;
	struct posix_acl *i_acl_default;
#endif
};

#endif /* _JFFS2_FS_I */
Commit	Line	Data
c00c310e DW	1	/*
	2	* JFFS2 -- Journalling Flash File System, Version 2.
	3	*
	4	* Copyright © 2001-2007 Red Hat, Inc.
	5	*
	6	* Created by David Woodhouse <dwmw2@infradead.org>
	7	*
	8	* For licensing information, see the file 'LICENCE' in this directory.
	9	*
	10	*/
1da177e4 LT	11
	12	#ifndef _JFFS2_FS_I
	13	#define _JFFS2_FS_I
	14
	15	#include <linux/version.h>
	16	#include <linux/rbtree.h>
aa98d7cf	17	#include <linux/posix_acl.h>
6188e10d	18	#include <linux/semaphore.h>
1da177e4 LT	19
1da177e4 LT	20	struct jffs2_inode_info {
1b1dcc1b	21	/* We need an internal mutex similar to inode->i_mutex.
1da177e4 LT	22	Unfortunately, we can't used the existing one, because
	23	either the GC would deadlock, or we'd have to release it
	24	before letting GC proceed. Or we'd have to put ugliness
1b1dcc1b	25	into the GC code so it didn't attempt to obtain the i_mutex
1da177e4 LT	26	for the inode(s) which are already locked */
	27	struct semaphore sem;
	28
	29	/* The highest (datanode) version number used for this ino */
	30	uint32_t highest_version;
	31
	32	/* List of data fragments which make up the file */
	33	struct rb_root fragtree;
	34
	35	/* There may be one datanode which isn't referenced by any of the
	36	above fragments, if it contains a metadata update but no actual
	37	data - or if this is a directory inode */
182ec4ee	38	/* This also holds the _only_ dnode for symlinks/device nodes,
1da177e4 LT	39	etc. */
	40	struct jffs2_full_dnode *metadata;
	41
	42	/* Directory entries */
	43	struct jffs2_full_dirent *dents;
	44
2b79adcc AB	45	/* The target path if this is the inode of a symlink */
	46	unsigned char *target;
	47
1da177e4 LT	48	/* Some stuff we just have to keep in-core at all times, for each inode. */
	49	struct jffs2_inode_cache *inocache;
	50
	51	uint16_t flags;
	52	uint8_t usercompr;
1da177e4	53	struct inode vfs_inode;
aa98d7cf KK	54	#ifdef CONFIG_JFFS2_FS_POSIX_ACL
	55	struct posix_acl *i_acl_access;
	56	struct posix_acl *i_acl_default;
	57	#endif
1da177e4 LT	58	};
	59
	60	#endif /* _JFFS2_FS_I */