Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (199 commits)
  [MTD] NAND: Fix breakage all over the place
  [PATCH] NAND: fix remaining OOB length calculation
  [MTD] NAND Fixup NDFC merge brokeness
  [MTD NAND] S3C2410 driver cleanup
  [MTD NAND] s3c24x0 board: Fix clock handling, ensure proper initialisation.
  [JFFS2] Check CRC32 on dirent and data nodes each time they're read
  [JFFS2] When retiring nextblock, allocate a node_ref for the wasted space
  [JFFS2] Mark XATTR support as experimental, for now
  [JFFS2] Don't trust node headers before the CRC is checked.
  [MTD] Restore MTD_ROM and MTD_RAM types
  [MTD] assume mtd->writesize is 1 for NOR flashes
  [MTD NAND] Fix s3c2410 NAND driver so it at least _looks_ like it compiles
  [MTD] Prepare physmap for 64-bit-resources
  [JFFS2] Fix more breakage caused by janitorial meddling.
  [JFFS2] Remove stray __exit from jffs2_compressors_exit()
  [MTD] Allow alternate JFFS2 mount variant for root filesystem.
  [MTD] Disconnect struct mtd_info from ABI
  [MTD] replace MTD_RAM with MTD_GENERIC_TYPE
  [MTD] replace MTD_ROM with MTD_GENERIC_TYPE
  [MTD] remove a forgotten MTD_XIP
  ...

1 files changed, 133 insertions, 0 deletions

diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h
new file mode 100644
index 000000000000..935fec1b1201
--- /dev/null
+++ b/fs/jffs2/jffs2_fs_sb.h
@@ -0,0 +1,133 @@
+/* $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/types.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/completion.h>
+#include <asm/semaphore.h>
+#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_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.
+   Nee jffs_control
+*/
+struct jffs2_sb_info {
+	struct mtd_info *mtd;
+
+	uint32_t highest_ino;
+	uint32_t checked_ino;
+
+	unsigned int flags;
+
+	struct task_struct *gc_task;	/* GC task struct */
+	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
+					   fields, and also to protect against
+					   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 flash_size;
+	uint32_t used_size;
+	uint32_t dirty_size;
+	uint32_t wasted_size;
+	uint32_t free_size;
+	uint32_t erasing_size;
+	uint32_t bad_size;
+	uint32_t sector_size;
+	uint32_t unchecked_size;
+
+	uint32_t nr_free_blocks;
+	uint32_t nr_erasing_blocks;
+
+	/* Number of free blocks there must be before we... */
+	uint8_t resv_blocks_write;	/* ... allow a normal filesystem write */
+	uint8_t resv_blocks_deletion;	/* ... allow a normal filesystem deletion */
+	uint8_t resv_blocks_gctrigger;	/* ... wake up the GC thread */
+	uint8_t resv_blocks_gcbad;	/* ... pick a block from the bad_list to GC */
+	uint8_t resv_blocks_gcmerge;	/* ... merge pages when garbage collecting */
+
+	uint32_t nospc_dirty_size;
+
+	uint32_t nr_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 jffs2_eraseblock *gcblock;	/* The block we're currently garbage-collecting */
+
+	struct list_head clean_list;		/* Blocks 100% full of clean data */
+	struct list_head very_dirty_list;	/* Blocks with lots of dirty space */
+	struct list_head dirty_list;		/* Blocks with some dirty space */
+	struct list_head erasable_list;		/* Blocks which are completely dirty, and need erasing */
+	struct list_head erasable_pending_wbuf_list;	/* Blocks which need erasing but only after the current wbuf is flushed */
+	struct list_head erasing_list;		/* Blocks which are currently erasing */
+	struct list_head erase_pending_list;	/* Blocks which need erasing now */
+	struct list_head erase_complete_list;	/* Blocks which are erased and need the clean marker written to them */
+	struct list_head free_list;		/* Blocks which are free and ready to be used */
+	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
+						   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
+	   to an obsoleted node. I don't like this. Alternatives welcomed. */
+	struct semaphore erase_free_sem;
+
+	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;
+	unsigned char *oobbuf;
+	uint32_t wbuf_ofs;
+	uint32_t wbuf_len;
+	struct jffs2_inodirty *wbuf_inodes;
+
+	struct rw_semaphore wbuf_sem;	/* Protects the write buffer */
+
+	/* Information about out-of-band area usage... */
+	struct nand_ecclayout *ecclayout;
+	uint32_t badblock_pos;
+	uint32_t fsdata_pos;
+	uint32_t fsdata_len;
+#endif
+
+	struct jffs2_summary *summary;		/* Summary information */
+
+#ifdef CONFIG_JFFS2_FS_XATTR
+#define XATTRINDEX_HASHSIZE	(57)
+	uint32_t highest_xid;
+	struct list_head xattrindex[XATTRINDEX_HASHSIZE];
+	struct list_head xattr_unchecked;
+	struct jffs2_xattr_ref *xref_temp;
+	struct rw_semaphore xattr_sem;
+	uint32_t xdatum_mem_usage;
+	uint32_t xdatum_mem_threshold;
+#endif
+	/* OS-private pointer for getting back to master superblock info */
+	void *os_priv;
+};
+
+#endif /* _JFFS2_FB_SB */