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authorThomas Gleixner <tglx@cruncher.tec.linutronix.de>2006-05-23 12:37:31 +0200
committerThomas Gleixner <tglx@cruncher.tec.linutronix.de>2006-05-23 12:37:31 +0200
commit4cbb9b80e171107c6c34116283fe38e5a396c68b (patch)
tree9463f2e4774f14752cf4bb52431e14e569256f72 /fs/jffs2/nodelist.h
parent6dfc6d250d0b7ebaa6423c44dcd09fcfe68deabd (diff)
parent9fe4854cd1f60273f9a3ece053f4789605f58a5e (diff)
Merge branch 'master' of /home/tglx/work/kernel/git/mtd-2.6/
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs/jffs2/nodelist.h')
-rw-r--r--fs/jffs2/nodelist.h75
1 files changed, 49 insertions, 26 deletions
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index 80d1fda2212b..76f1b9419eea 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -77,9 +77,9 @@
struct jffs2_raw_node_ref
{
struct jffs2_raw_node_ref *next_in_ino; /* Points to the next raw_node_ref
- for this inode. If this is the last, it points to the inode_cache
- for this inode instead. The inode_cache will have NULL in the first
- word so you know when you've got there :) */
+ for this object. If this _is_ the last, it points to the inode_cache,
+ xattr_ref or xattr_datum instead. The common part of those structures
+ has NULL in the first word. See jffs2_raw_ref_to_ic() below */
struct jffs2_raw_node_ref *next_phys;
uint32_t flash_offset;
#define TEST_TOTLEN
@@ -88,6 +88,18 @@ struct jffs2_raw_node_ref
#endif
};
+static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw)
+{
+ while(raw->next_in_ino) {
+ raw = raw->next_in_ino;
+ }
+
+ /* NB. This can be a jffs2_xattr_datum or jffs2_xattr_ref and
+ not actually a jffs2_inode_cache. Check ->class */
+ return ((struct jffs2_inode_cache *)raw);
+}
+
+
/* flash_offset & 3 always has to be zero, because nodes are
always aligned at 4 bytes. So we have a couple of extra bits
to play with, which indicate the node's status; see below: */
@@ -113,20 +125,27 @@ struct jffs2_raw_node_ref
a pointer to the first physical node which is part of this inode, too.
*/
struct jffs2_inode_cache {
+ /* First part of structure is shared with other objects which
+ can terminate the raw node refs' next_in_ino list -- which
+ currently struct jffs2_xattr_datum and struct jffs2_xattr_ref. */
+
struct jffs2_full_dirent *scan_dents; /* Used during scan to hold
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;
+ uint8_t class; /* It's used for identification */
+
+ /* end of shared structure */
+
+ uint8_t flags;
+ uint16_t state;
uint32_t ino;
- int nlink;
+ struct jffs2_inode_cache *next;
#ifdef CONFIG_JFFS2_FS_XATTR
struct jffs2_xattr_ref *xref;
#endif
+ int nlink;
};
/* Inode states for 'state' above. We need the 'GC' state to prevent
@@ -148,6 +167,8 @@ struct jffs2_inode_cache {
#define INOCACHE_HASHSIZE 128
+#define write_ofs(c) ((c)->nextblock->offset + (c)->sector_size - (c)->nextblock->free_size)
+
/*
Larger representation of a raw node, kept in-core only when the
struct inode for this particular ino is instantiated.
@@ -250,15 +271,6 @@ static inline int jffs2_encode_dev(union jffs2_device_node *jdev, dev_t rdev)
}
}
-static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw)
-{
- while(raw->next_in_ino) {
- raw = raw->next_in_ino;
- }
-
- return ((struct jffs2_inode_cache *)raw);
-}
-
static inline struct jffs2_node_frag *frag_first(struct rb_root *root)
{
struct rb_node *node = root->rb_node;
@@ -307,32 +319,43 @@ int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_in
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);
+ struct jffs2_raw_node_ref *ref, uint32_t len,
+ struct jffs2_inode_cache *ic);
extern uint32_t __jffs2_ref_totlen(struct jffs2_sb_info *c,
struct jffs2_eraseblock *jeb,
struct jffs2_raw_node_ref *ref);
/* nodemgmt.c */
int jffs2_thread_should_wake(struct jffs2_sb_info *c);
-int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
uint32_t *len, int prio, uint32_t sumsize);
-int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, uint32_t *ofs,
+int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize,
uint32_t *len, uint32_t sumsize);
-int jffs2_add_physical_node_ref(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *new, uint32_t len);
+int jffs2_add_physical_node_ref(struct jffs2_sb_info *c,
+ struct jffs2_raw_node_ref *new,
+ uint32_t len,
+ struct jffs2_inode_cache *ic);
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);
/* write.c */
int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri);
-struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode);
-struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_dirent *rd, const unsigned char *name, uint32_t namelen, uint32_t flash_ofs, int alloc_mode);
+struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+ struct jffs2_raw_inode *ri, const unsigned char *data,
+ uint32_t datalen, int alloc_mode);
+struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+ struct jffs2_raw_dirent *rd, const unsigned char *name,
+ uint32_t namelen, int alloc_mode);
int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
struct jffs2_raw_inode *ri, unsigned char *buf,
uint32_t offset, uint32_t writelen, uint32_t *retlen);
-int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen);
-int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, int namelen, struct jffs2_inode_info *dead_f, uint32_t time);
-int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time);
+int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f,
+ struct jffs2_raw_inode *ri, const char *name, int namelen);
+int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name,
+ int namelen, struct jffs2_inode_info *dead_f, uint32_t time);
+int jffs2_do_link(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino,
+ uint8_t type, const char *name, int namelen, uint32_t time);
/* readinode.c */