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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [fs/] [jffs2/] [v2_0/] [include/] [linux/] [jffs2_fs_sb.h] - Blame information for rev 565

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/* $Id: jffs2_fs_sb.h,v 1.1.1.1 2004-02-14 13:29:21 phoenix Exp $ */
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#ifndef _JFFS2_FS_SB
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#define _JFFS2_FS_SB
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/completion.h>
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#include <asm/semaphore.h>
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/list.h>
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#define JFFS2_SB_FLAG_RO 1
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#define JFFS2_SB_FLAG_MOUNTING 2
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/* A struct for the overall file system control.  Pointers to
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   jffs2_sb_info structs are named `c' in the source code.
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   Nee jffs_control
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*/
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struct jffs2_sb_info {
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        struct mtd_info *mtd;
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        uint32_t highest_ino;
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        uint32_t checked_ino;
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        unsigned int flags;
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        struct task_struct *gc_task;    /* GC task struct */
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        struct semaphore gc_thread_start; /* GC thread start mutex */
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        struct completion gc_thread_exit; /* GC thread exit completion port */
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        struct semaphore alloc_sem;     /* Used to protect all the following
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                                           fields, and also to protect against
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                                           out-of-order writing of nodes.
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                                           And GC.
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                                        */
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        uint32_t cleanmarker_size;      /* Size of an _inline_ CLEANMARKER
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                                         (i.e. zero for OOB CLEANMARKER */
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        uint32_t flash_size;
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        uint32_t used_size;
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        uint32_t dirty_size;
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        uint32_t wasted_size;
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        uint32_t free_size;
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        uint32_t erasing_size;
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        uint32_t bad_size;
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        uint32_t sector_size;
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        uint32_t unchecked_size;
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        uint32_t nr_free_blocks;
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        uint32_t nr_erasing_blocks;
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        uint32_t nr_blocks;
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        struct jffs2_eraseblock *blocks;        /* The whole array of blocks. Used for getting blocks
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                                                 * from the offset (blocks[ofs / sector_size]) */
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        struct jffs2_eraseblock *nextblock;     /* The block we're currently filling */
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        struct jffs2_eraseblock *gcblock;       /* The block we're currently garbage-collecting */
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        struct list_head clean_list;            /* Blocks 100% full of clean data */
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        struct list_head very_dirty_list;       /* Blocks with lots of dirty space */
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        struct list_head dirty_list;            /* Blocks with some dirty space */
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        struct list_head erasable_list;         /* Blocks which are completely dirty, and need erasing */
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        struct list_head erasable_pending_wbuf_list;    /* Blocks which need erasing but only after the current wbuf is flushed */
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        struct list_head erasing_list;          /* Blocks which are currently erasing */
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        struct list_head erase_pending_list;    /* Blocks which need erasing now */
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        struct list_head erase_complete_list;   /* Blocks which are erased and need the clean marker written to them */
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        struct list_head free_list;             /* Blocks which are free and ready to be used */
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        struct list_head bad_list;              /* Bad blocks. */
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        struct list_head bad_used_list;         /* Bad blocks with valid data in. */
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        spinlock_t erase_completion_lock;       /* Protect free_list and erasing_list
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                                                   against erase completion handler */
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        wait_queue_head_t erase_wait;           /* For waiting for erases to complete */
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        wait_queue_head_t inocache_wq;
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        struct jffs2_inode_cache **inocache_list;
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        spinlock_t inocache_lock;
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        /* Sem to allow jffs2_garbage_collect_deletion_dirent to
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           drop the erase_completion_lock while it's holding a pointer
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           to an obsoleted node. I don't like this. Alternatives welcomed. */
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        struct semaphore erase_free_sem;
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        /* Write-behind buffer for NAND flash */
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        unsigned char *wbuf;
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        uint32_t wbuf_ofs;
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        uint32_t wbuf_len;
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        uint32_t wbuf_pagesize;
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        struct work_struct wbuf_task;           /* task for timed wbuf flush */
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        struct timer_list wbuf_timer;           /* timer for flushing wbuf */
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        /* OS-private pointer for getting back to master superblock info */
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        void *os_priv;
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};
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#endif /* _JFFS2_FB_SB */

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