filemap: trivial code cleanups

- remove unused local next_index in do_generic_mapping_read()
- remove a redudant page_cache_read() declaration

Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn>
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>
This commit is contained in:
Fengguang Wu 2007-10-16 01:24:37 -07:00 committed by Linus Torvalds
parent f2e189827a
commit b2c3843b1e

View File

@ -869,7 +869,6 @@ void do_generic_mapping_read(struct address_space *mapping,
unsigned long index;
unsigned long offset;
unsigned long last_index;
unsigned long next_index;
unsigned long prev_index;
unsigned int prev_offset;
struct page *cached_page;
@ -877,7 +876,6 @@ void do_generic_mapping_read(struct address_space *mapping,
cached_page = NULL;
index = *ppos >> PAGE_CACHE_SHIFT;
next_index = index;
prev_index = ra->prev_pos >> PAGE_CACHE_SHIFT;
prev_offset = ra->prev_pos & (PAGE_CACHE_SIZE-1);
last_index = (*ppos + desc->count + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT;
@ -1250,7 +1248,6 @@ asmlinkage ssize_t sys_readahead(int fd, loff_t offset, size_t count)
}
#ifdef CONFIG_MMU
static int FASTCALL(page_cache_read(struct file * file, unsigned long offset));
/**
* page_cache_read - adds requested page to the page cache if not already there
* @file: file to read