diff options
| author | Fengguang Wu <wfg@mail.ustc.edu.cn> | 2007-07-19 01:48:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-19 10:04:44 -0700 |
| commit | c743d96b6d2ff55a94df7b5ac7c74987bb9c343b (patch) | |
| tree | 391e5dad21e62590e343c63e5ba05322d0fc76ad /include | |
| parent | dc7868fcb9a73990e6f30371c1be465c436a7a7f (diff) | |
readahead: remove the old algorithm
Remove the old readahead algorithm.
Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
Cc: Steven Pratt <slpratt@austin.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 11 | ||||
| -rw-r--r-- | include/linux/mm.h | 7 |
2 files changed, 1 insertions, 17 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 9a5f562abc7..29cb32d3a84 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -701,14 +701,6 @@ struct fown_struct { * 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 */ @@ -717,10 +709,9 @@ struct file_ra_state { 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. diff --git a/include/linux/mm.h b/include/linux/mm.h index 619c0e80cf0..3d0d7d28523 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1144,13 +1144,6 @@ unsigned long page_cache_readahead_ondemand(struct address_space *mapping, struct page *page, pgoff_t offset, unsigned long size); -unsigned long page_cache_readahead(struct address_space *mapping, - struct file_ra_state *ra, - struct file *filp, - pgoff_t offset, - unsigned long size); -void handle_ra_miss(struct address_space *mapping, - struct file_ra_state *ra, pgoff_t offset); unsigned long max_sane_readahead(unsigned long nr); /* Do stack extension */ |