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libfs: Unexport and kill simple_prepare_write 

Remove the EXPORT_UNUSED_SYMBOL of simple_prepare_write

Collapse simple_prepare_write into it's only caller, though
making it simpler and clearer to understand.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Boaz Harrosh 2010-01-12 16:18:08 +02:00 committed by Al Viro
parent ad2a722f19
commit 193cf4b991
2 changed files with 6 additions and 18 deletions
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22
fs/libfs.c
View File

@ -338,28 +338,14 @@ int simple_readpage(struct file *file, struct page *page)
return 0;
}
int simple_prepare_write(struct file *file, struct page *page,
unsigned from, unsigned to)
{
if (!PageUptodate(page)) {
if (to - from != PAGE_CACHE_SIZE)
zero_user_segments(page,
0, from,
to, PAGE_CACHE_SIZE);
}
return 0;
}
int simple_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
struct page *page;
pgoff_t index;
unsigned from;
index = pos >> PAGE_CACHE_SHIFT;
from = pos & (PAGE_CACHE_SIZE - 1);
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
@ -367,7 +353,12 @@ int simple_write_begin(struct file *file, struct address_space *mapping,
*pagep = page;
return simple_prepare_write(file, page, from, from+len);
if (!PageUptodate(page) && (len != PAGE_CACHE_SIZE)) {
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
zero_user_segments(page, 0, from, from + len, PAGE_CACHE_SIZE);
}
return 0;
}
/**
@ -864,7 +855,6 @@ EXPORT_SYMBOL(simple_getattr);
EXPORT_SYMBOL(simple_link);
EXPORT_SYMBOL(simple_lookup);
EXPORT_SYMBOL(simple_pin_fs);
EXPORT_UNUSED_SYMBOL(simple_prepare_write);
EXPORT_SYMBOL(simple_readpage);
EXPORT_SYMBOL(simple_release_fs);
EXPORT_SYMBOL(simple_rename);

2
include/linux/fs.h
View File

@ -2340,8 +2340,6 @@ extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct
extern int simple_sync_file(struct file *, struct dentry *, int);
extern int simple_empty(struct dentry *);
extern int simple_readpage(struct file *file, struct page *page);
extern int simple_prepare_write(struct file *file, struct page *page,
unsigned offset, unsigned to);
extern int simple_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata);