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Commit af6aa1b9 authored by Richard Weinberger's avatar Richard Weinberger
Browse files

hostfs: Use page_offset() 



The kernel offers a helper function for that, use it.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent b86b413a

fs/hostfs/hostfs_kern.c

+2 −4
Original line number Diff line number Diff line
@@ -410,7 +410,7 @@ static int hostfs_writepage(struct page *page, struct writeback_control *wbc) 
	struct address_space *mapping = page->mapping;

	struct inode *inode = mapping->host;

	char *buffer;

	unsigned long long base;

	loff_t base = page_offset(page);

	int count = PAGE_CACHE_SIZE;

	int end_index = inode->i_size >> PAGE_CACHE_SHIFT;

	int err;
@@ -419,7 +419,6 @@ static int hostfs_writepage(struct page *page, struct writeback_control *wbc) 
		count = inode->i_size & (PAGE_CACHE_SIZE-1);



	buffer = kmap(page);

	base = ((unsigned long long) page->index) << PAGE_CACHE_SHIFT;



	err = write_file(HOSTFS_I(inode)->fd, &base, buffer, count);

	if (err != count) {
@@ -444,10 +443,9 @@ static int hostfs_writepage(struct page *page, struct writeback_control *wbc) 
static int hostfs_readpage(struct file *file, struct page *page)

{

	char *buffer;

	long long start;

	loff_t start = page_offset(page);

	int bytes_read, ret = 0;



	start = (long long) page->index << PAGE_CACHE_SHIFT;

	buffer = kmap(page);

	bytes_read = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer,

			PAGE_CACHE_SIZE);