diff options
Diffstat (limited to 'fs/jffs2')
| -rw-r--r-- | fs/jffs2/compr.h | 4 | ||||
| -rw-r--r-- | fs/jffs2/dir.c | 4 | ||||
| -rw-r--r-- | fs/jffs2/jffs2_fs_i.h | 50 | ||||
| -rw-r--r-- | fs/jffs2/jffs2_fs_sb.h | 122 | ||||
| -rw-r--r-- | fs/jffs2/nodelist.h | 4 |
5 files changed, 178 insertions, 6 deletions
diff --git a/fs/jffs2/compr.h b/fs/jffs2/compr.h index a77e830d85c..509b8b1c081 100644 --- a/fs/jffs2/compr.h +++ b/fs/jffs2/compr.h @@ -23,8 +23,8 @@ #include <linux/errno.h> #include <linux/fs.h> #include <linux/jffs2.h> -#include <linux/jffs2_fs_i.h> -#include <linux/jffs2_fs_sb.h> +#include "jffs2_fs_i.h" +#include "jffs2_fs_sb.h" #include "nodelist.h" #define JFFS2_RUBINMIPS_PRIORITY 10 diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index f92840a3a52..1c8e8c0f6ce 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -17,8 +17,8 @@ #include <linux/fs.h> #include <linux/crc32.h> #include <linux/jffs2.h> -#include <linux/jffs2_fs_i.h> -#include <linux/jffs2_fs_sb.h> +#include "jffs2_fs_i.h" +#include "jffs2_fs_sb.h" #include <linux/time.h> #include "nodelist.h" diff --git a/fs/jffs2/jffs2_fs_i.h b/fs/jffs2/jffs2_fs_i.h new file mode 100644 index 00000000000..ad565bf9dcc --- /dev/null +++ b/fs/jffs2/jffs2_fs_i.h @@ -0,0 +1,50 @@ +/* $Id: jffs2_fs_i.h,v 1.19 2005/11/07 11:14:52 gleixner Exp $ */ + +#ifndef _JFFS2_FS_I +#define _JFFS2_FS_I + +#include <linux/version.h> +#include <linux/rbtree.h> +#include <asm/semaphore.h> + +struct jffs2_inode_info { + /* We need an internal mutex similar to inode->i_mutex. + Unfortunately, we can't used the existing one, because + either the GC would deadlock, or we'd have to release it + before letting GC proceed. Or we'd have to put ugliness + into the GC code so it didn't attempt to obtain the i_mutex + for the inode(s) which are already locked */ + struct semaphore sem; + + /* The highest (datanode) version number used for this ino */ + uint32_t highest_version; + + /* List of data fragments which make up the file */ + struct rb_root fragtree; + + /* There may be one datanode which isn't referenced by any of the + above fragments, if it contains a metadata update but no actual + data - or if this is a directory inode */ + /* This also holds the _only_ dnode for symlinks/device nodes, + etc. */ + struct jffs2_full_dnode *metadata; + + /* Directory entries */ + struct jffs2_full_dirent *dents; + + /* The target path if this is the inode of a symlink */ + unsigned char *target; + + /* Some stuff we just have to keep in-core at all times, for each inode. */ + struct jffs2_inode_cache *inocache; + + uint16_t flags; + uint8_t usercompr; +#if !defined (__ECOS) +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,2) + struct inode vfs_inode; +#endif +#endif +}; + +#endif /* _JFFS2_FS_I */ diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h new file mode 100644 index 00000000000..4bcfb557022 --- /dev/null +++ b/fs/jffs2/jffs2_fs_sb.h @@ -0,0 +1,122 @@ +/* $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; + 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_oobinfo *oobinfo; + uint32_t badblock_pos; + uint32_t fsdata_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; +}; + +#endif /* _JFFS2_FB_SB */ diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 23a67bb3052..f6645afe88e 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -18,8 +18,8 @@ #include <linux/fs.h> #include <linux/types.h> #include <linux/jffs2.h> -#include <linux/jffs2_fs_sb.h> -#include <linux/jffs2_fs_i.h> +#include "jffs2_fs_sb.h" +#include "jffs2_fs_i.h" #include "summary.h" #ifdef __ECOS |