[JFFS2] Add length argument to jffs2_add_physical_node_ref()

[safe/jmp/linux-2.6] / fs / jffs2 / nodelist.h

diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index f6645af..94ef887 100644 (file)
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -20,6 +20,8 @@
 #include <linux/jffs2.h>
 #include "jffs2_fs_sb.h"
 #include "jffs2_fs_i.h"
+#include "xattr.h"
+#include "acl.h"
 #include "summary.h"
 
 #ifdef __ECOS
@@ -95,6 +97,11 @@ struct jffs2_raw_node_ref
 #define ref_obsolete(ref)      (((ref)->flash_offset & 3) == REF_OBSOLETE)
 #define mark_ref_normal(ref)    do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0)
 
+/* NB: REF_PRISTINE for an inode-less node (ref->next_in_ino == NULL) indicates
+   it is an unknown node of type JFFS2_NODETYPE_RWCOMPAT_COPY, so it'll get
+   copied. If you need to do anything different to GC inode-less nodes, then
+   you need to modify gc.c accordingly. */
+
 /* For each inode in the filesystem, we need to keep a record of
    nlink, because it would be a PITA to scan the whole directory tree
    at read_inode() time to calculate it, and to keep sufficient information
@@ -107,11 +114,16 @@ struct jffs2_inode_cache {
                temporary lists of dirents, and later must be set to
                NULL to mark the end of the raw_node_ref->next_in_ino
                chain. */
+       u8 class;       /* It's used for identification */
+       u8 flags;
+       uint16_t state;
        struct jffs2_inode_cache *next;
        struct jffs2_raw_node_ref *nodes;
        uint32_t ino;
        int nlink;
-       int state;
+#ifdef CONFIG_JFFS2_FS_XATTR
+       struct jffs2_xattr_ref *xref;
+#endif
 };
 
 /* Inode states for 'state' above. We need the 'GC' state to prevent
@@ -125,6 +137,12 @@ struct jffs2_inode_cache {
 #define INO_STATE_READING      5       /* In read_inode() */
 #define INO_STATE_CLEARING     6       /* In clear_inode() */
 
+#define INO_FLAGS_XATTR_CHECKED        0x01    /* has no duplicate xattr_ref */
+
+#define RAWNODE_CLASS_INODE_CACHE      0
+#define RAWNODE_CLASS_XATTR_DATUM      1
+#define RAWNODE_CLASS_XATTR_REF                2
+
 #define INOCACHE_HASHSIZE 128
 
 /*
@@ -268,6 +286,17 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
 
 #define PAD(x) (((x)+3)&~3)
 
+static inline int jffs2_encode_dev(union jffs2_device_node *jdev, dev_t rdev)
+{
+       if (old_valid_dev(rdev)) {
+               jdev->old = cpu_to_je16(old_encode_dev(rdev));
+               return sizeof(jdev->old);
+       } else {
+               jdev->new = cpu_to_je32(new_encode_dev(rdev));
+               return sizeof(jdev->new);
+       }
+}
+
 static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw)
 {
        while(raw->next_in_ino) {
@@ -324,6 +353,8 @@ void jffs2_obsolete_node_frag(struct jffs2_sb_info *c, struct jffs2_node_frag *t
 int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
 void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
 int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn);
+void jffs2_link_node_ref(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,
+                        struct jffs2_raw_node_ref *ref, uint32_t len);
 
 /* nodemgmt.c */
 int jffs2_thread_should_wake(struct jffs2_sb_info *c);
@@ -331,7 +362,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs
                        uint32_t *len, int prio, uint32_t sumsize);
 int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
                        uint32_t *len, uint32_t sumsize);
-int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new);
+int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new, uint32_t len);
 void jffs2_complete_reservation(struct jffs2_sb_info *c);
 void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *raw);
 
@@ -374,6 +405,12 @@ struct jffs2_node_frag *jffs2_alloc_node_frag(void);
 void jffs2_free_node_frag(struct jffs2_node_frag *);
 struct jffs2_inode_cache *jffs2_alloc_inode_cache(void);
 void jffs2_free_inode_cache(struct jffs2_inode_cache *);
+#ifdef CONFIG_JFFS2_FS_XATTR
+struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void);
+void jffs2_free_xattr_datum(struct jffs2_xattr_datum *);
+struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void);
+void jffs2_free_xattr_ref(struct jffs2_xattr_ref *);
+#endif
 
 /* gc.c */
 int jffs2_garbage_collect_pass(struct jffs2_sb_info *c);
@@ -393,12 +430,14 @@ int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf,
                                uint32_t ofs, uint32_t len);
 struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uint32_t ino);
 int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
+int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t size);
 
 /* build.c */
 int jffs2_do_mount_fs(struct jffs2_sb_info *c);
 
 /* erase.c */
 void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
+void jffs2_free_all_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
 
 #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 /* wbuf.c */