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hostfs: Use page_offset() 

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

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger 2015-03-04 20:58:39 +01:00
parent b86b413a32
commit af6aa1b9ca
1 changed files with 2 additions and 4 deletions
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6
fs/hostfs/hostfs_kern.c
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@ -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);