Commit 41761ddf authored by Richard Weinberger's avatar Richard Weinberger

hostfs: Make hostfs_readpage more readable

...to make life easier for future readers of that code.
Signed-off-by: 's avatarRichard Weinberger <richard@nod.at>
parent 2ad2dca6
......@@ -439,25 +439,27 @@ static int hostfs_readpage(struct file *file, struct page *page)
{
char *buffer;
long long start;
int err = 0;
int bytes_read, ret;
start = (long long) page->index << PAGE_CACHE_SHIFT;
buffer = kmap(page);
err = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer,
bytes_read = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer,
PAGE_CACHE_SIZE);
if (err < 0)
if (bytes_read < 0) {
ret = bytes_read;
goto out;
}
memset(&buffer[err], 0, PAGE_CACHE_SIZE - err);
memset(buffer + bytes_read, 0, PAGE_CACHE_SIZE - bytes_read);
flush_dcache_page(page);
SetPageUptodate(page);
if (PageError(page)) ClearPageError(page);
err = 0;
ret = 0;
out:
kunmap(page);
unlock_page(page);
return err;
return ret;
}
static int hostfs_write_begin(struct file *file, struct address_space *mapping,
......
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