sdio: add interface for host side SDIO interrupt reporting

[linux-2.6] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9a5f562abc77eb9f62ac3588f85d3cb746eeca56..16421f662a7ad6074e107a47f8d9be92ad185064 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -695,87 +695,29 @@ struct fown_struct {
 
 /*
  * Track a single file's readahead state
- *
- *  ================#============|==================#==================|
- *                  ^            ^                  ^                  ^
- *  file_ra_state.la_index    .ra_index   .lookahead_index   .readahead_index
  */
 struct file_ra_state {
-       unsigned long start;            /* Current window */
-       unsigned long size;
-       unsigned long flags;            /* ra flags RA_FLAG_xxx*/
-       unsigned long cache_hit;        /* cache hit count*/
-       unsigned long prev_index;       /* Cache last read() position */
-       unsigned long ahead_start;      /* Ahead window */
-       unsigned long ahead_size;
-
-       pgoff_t la_index;               /* enqueue time */
-       pgoff_t ra_index;               /* begin offset */
-       pgoff_t lookahead_index;        /* time to do next readahead */
-       pgoff_t readahead_index;        /* end offset */
+       pgoff_t start;                  /* where readahead started */
+       unsigned long size;             /* # of readahead pages */
+       unsigned long async_size;       /* do asynchronous readahead when
+                                          there are only # of pages ahead */
 
        unsigned long ra_pages;         /* Maximum readahead window */
        unsigned long mmap_hit;         /* Cache hit stat for mmap accesses */
        unsigned long mmap_miss;        /* Cache miss stat for mmap accesses */
+       unsigned long prev_index;       /* Cache last read() position */
        unsigned int prev_offset;       /* Offset where last read() ended in a page */
 };
-#define RA_FLAG_MISS 0x01      /* a cache miss occured against this file */
-#define RA_FLAG_INCACHE 0x02   /* file is already in cache */
-
-/*
- * Measuring read-ahead sizes.
- *
- *                  |----------- readahead size ------------>|
- *  ===#============|==================#=====================|
- *     |------- invoke interval ------>|-- lookahead size -->|
- */
-static inline unsigned long ra_readahead_size(struct file_ra_state *ra)
-{
-       return ra->readahead_index - ra->ra_index;
-}
-
-static inline unsigned long ra_lookahead_size(struct file_ra_state *ra)
-{
-       return ra->readahead_index - ra->lookahead_index;
-}
-
-static inline unsigned long ra_invoke_interval(struct file_ra_state *ra)
-{
-       return ra->lookahead_index - ra->la_index;
-}
 
 /*
  * Check if @index falls in the readahead windows.
  */
 static inline int ra_has_index(struct file_ra_state *ra, pgoff_t index)
 {
-       return (index >= ra->la_index &&
-               index <  ra->readahead_index);
-}
-
-/*
- * Where is the old read-ahead and look-ahead?
- */
-static inline void ra_set_index(struct file_ra_state *ra,
-                               pgoff_t la_index, pgoff_t ra_index)
-{
-       ra->la_index = la_index;
-       ra->ra_index = ra_index;
+       return (index >= ra->start &&
+               index <  ra->start + ra->size);
 }
 
-/*
- * Where is the new read-ahead and look-ahead?
- */
-static inline void ra_set_size(struct file_ra_state *ra,
-                               unsigned long ra_size, unsigned long la_size)
-{
-       ra->readahead_index = ra->ra_index + ra_size;
-       ra->lookahead_index = ra->ra_index + ra_size - la_size;
-}
-
-unsigned long ra_submit(struct file_ra_state *ra,
-                      struct address_space *mapping, struct file *filp);
-
 struct file {
        /*
         * fu_list becomes invalid after file_free is called and queued via
@@ -936,7 +878,7 @@ extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
 extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
 extern int __break_lease(struct inode *inode, unsigned int flags);
 extern void lease_get_mtime(struct inode *, struct timespec *time);
-extern int setlease(struct file *, long, struct file_lock **);
+extern int generic_setlease(struct file *, long, struct file_lock **);
 extern int vfs_setlease(struct file *, long, struct file_lock **);
 extern int lease_modify(struct file_lock **, int);
 extern int lock_may_read(struct inode *, loff_t start, unsigned long count);
@@ -1717,7 +1659,6 @@ extern int sb_min_blocksize(struct super_block *, int);
 extern int generic_file_mmap(struct file *, struct vm_area_struct *);
 extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
 extern int file_read_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size);
-extern int file_send_actor(read_descriptor_t * desc, struct page *page, unsigned long offset, unsigned long size);
 int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk);
 extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t);
 extern ssize_t generic_file_aio_write(struct kiocb *, const struct iovec *, unsigned long, loff_t);