-/* $Id: jffs2_fs_sb.h,v 1.45 2003/10/08 11:46:27 dwmw2 Exp $ */
+/* $Id: jffs2_fs_sb.h,v 1.54 2005/09/21 13:37:34 dedekind Exp $ */
#ifndef _JFFS2_FS_SB
#define _JFFS2_FS_SB
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/list.h>
+#include <linux/rwsem.h>
#define JFFS2_SB_FLAG_RO 1
-#define JFFS2_SB_FLAG_MOUNTING 2
+#define JFFS2_SB_FLAG_SCANNING 2 /* Flash scanning is in progress */
+#define JFFS2_SB_FLAG_BUILDING 4 /* File system building is in progress */
struct jffs2_inodirty;
/* A struct for the overall file system control. Pointers to
- jffs2_sb_info structs are named `c' in the source code.
+ jffs2_sb_info structs are named `c' in the source code.
Nee jffs_control
*/
struct jffs2_sb_info {
unsigned int flags;
struct task_struct *gc_task; /* GC task struct */
- struct semaphore gc_thread_start; /* GC thread start mutex */
+ struct completion gc_thread_start; /* GC thread start completion */
struct completion gc_thread_exit; /* GC thread exit completion port */
- struct semaphore alloc_sem; /* Used to protect all the following
+ struct semaphore alloc_sem; /* Used to protect all the following
fields, and also to protect against
- out-of-order writing of nodes.
- And GC.
- */
+ out-of-order writing of nodes. And GC. */
uint32_t cleanmarker_size; /* Size of an _inline_ CLEANMARKER
(i.e. zero for OOB CLEANMARKER */
uint32_t nospc_dirty_size;
uint32_t nr_blocks;
- struct jffs2_eraseblock *blocks; /* The whole array of blocks. Used for getting blocks
+ struct jffs2_eraseblock *blocks; /* The whole array of blocks. Used for getting blocks
* from the offset (blocks[ofs / sector_size]) */
struct jffs2_eraseblock *nextblock; /* The block we're currently filling */
struct list_head bad_list; /* Bad blocks. */
struct list_head bad_used_list; /* Bad blocks with valid data in. */
- spinlock_t erase_completion_lock; /* Protect free_list and erasing_list
+ spinlock_t erase_completion_lock; /* Protect free_list and erasing_list
against erase completion handler */
wait_queue_head_t erase_wait; /* For waiting for erases to complete */
wait_queue_head_t inocache_wq;
struct jffs2_inode_cache **inocache_list;
spinlock_t inocache_lock;
-
+
/* Sem to allow jffs2_garbage_collect_deletion_dirent to
- drop the erase_completion_lock while it's holding a pointer
+ drop the erase_completion_lock while it's holding a pointer
to an obsoleted node. I don't like this. Alternatives welcomed. */
struct semaphore erase_free_sem;
-#ifdef CONFIG_JFFS2_FS_NAND
+ uint32_t wbuf_pagesize; /* 0 for NOR and other flashes with no wbuf */
+
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
/* Write-behind buffer for NAND flash */
unsigned char *wbuf;
uint32_t wbuf_ofs;
uint32_t wbuf_len;
- uint32_t wbuf_pagesize;
struct jffs2_inodirty *wbuf_inodes;
+ struct rw_semaphore wbuf_sem; /* Protects the write buffer */
+
/* Information about out-of-band area usage... */
struct nand_oobinfo *oobinfo;
uint32_t badblock_pos;
uint32_t fsdata_len;
#endif
+ struct jffs2_summary *summary; /* Summary information */
+
/* OS-private pointer for getting back to master superblock info */
void *os_priv;
};