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-rw-r--r--mm/filemap.c39
1 files changed, 0 insertions, 39 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 79c4b2b..64b48f9 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -29,7 +29,6 @@
#include <linux/pagevec.h>
#include <linux/blkdev.h>
#include <linux/security.h>
-#include <linux/syscalls.h>
#include <linux/cpuset.h>
#include <linux/hardirq.h> /* for BUG_ON(!in_atomic()) only */
#include <linux/memcontrol.h>
@@ -1478,44 +1477,6 @@ out:
}
EXPORT_SYMBOL(generic_file_aio_read);
-static ssize_t
-do_readahead(struct address_space *mapping, struct file *filp,
- pgoff_t index, unsigned long nr)
-{
- if (!mapping || !mapping->a_ops || !mapping->a_ops->readpage)
- return -EINVAL;
-
- force_page_cache_readahead(mapping, filp, index, nr);
- return 0;
-}
-
-SYSCALL_DEFINE(readahead)(int fd, loff_t offset, size_t count)
-{
- ssize_t ret;
- struct file *file;
-
- ret = -EBADF;
- file = fget(fd);
- if (file) {
- if (file->f_mode & FMODE_READ) {
- struct address_space *mapping = file->f_mapping;
- pgoff_t start = offset >> PAGE_CACHE_SHIFT;
- pgoff_t end = (offset + count - 1) >> PAGE_CACHE_SHIFT;
- unsigned long len = end - start + 1;
- ret = do_readahead(mapping, file, start, len);
- }
- fput(file);
- }
- return ret;
-}
-#ifdef CONFIG_HAVE_SYSCALL_WRAPPERS
-asmlinkage long SyS_readahead(long fd, loff_t offset, long count)
-{
- return SYSC_readahead((int) fd, offset, (size_t) count);
-}
-SYSCALL_ALIAS(sys_readahead, SyS_readahead);
-#endif
-
#ifdef CONFIG_MMU
/**
* page_cache_read - adds requested page to the page cache if not already there
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