1 | /* |
2 | * JFFS2 -- Journalling Flash File System, Version 2. |
3 | * |
4 | * Copyright © 2001-2007 Red Hat, Inc. |
5 | * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org> |
6 | * |
7 | * Created by David Woodhouse <dwmw2@infradead.org> |
8 | * |
9 | * For licensing information, see the file 'LICENCE' in this directory. |
10 | * |
11 | */ |
12 | |
13 | #ifndef _JFFS2_FS_I |
14 | #define _JFFS2_FS_I |
15 | |
16 | #include <linux/rbtree.h> |
17 | #include <linux/posix_acl.h> |
18 | #include <linux/mutex.h> |
19 | |
20 | struct jffs2_inode_info { |
21 | /* We need an internal mutex similar to inode->i_rwsem. |
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 |
25 | into the GC code so it didn't attempt to obtain the i_rwsem |
26 | for the inode(s) which are already locked */ |
27 | struct mutex 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 */ |
38 | /* This also holds the _only_ dnode for symlinks/device nodes, |
39 | etc. */ |
40 | struct jffs2_full_dnode *metadata; |
41 | |
42 | /* Directory entries */ |
43 | struct jffs2_full_dirent *dents; |
44 | |
45 | /* The target path if this is the inode of a symlink */ |
46 | unsigned char *target; |
47 | |
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; |
53 | struct inode vfs_inode; |
54 | }; |
55 | |
56 | #endif /* _JFFS2_FS_I */ |
57 | |