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mtd: block2mtd: page index should use pgoff_t 

Page index use pgoff_t to prevent risk of truncation.

Signed-off-by: Liu Song <liu.song11@zte.com.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Liu Song 2019-11-29 22:33:52 +08:00 committed by Miquel Raynal
parent 0bc448b49e
commit c3917a0484
1 changed files with 4 additions and 4 deletions
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8
drivers/mtd/devices/block2mtd.c
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@ -44,7 +44,7 @@ struct block2mtd_dev {
static LIST_HEAD(blkmtd_device_list);
static struct page *page_read(struct address_space *mapping, int index)
static struct page *page_read(struct address_space *mapping, pgoff_t index)
{
return read_mapping_page(mapping, index, NULL);
}
@ -54,7 +54,7 @@ static int _block2mtd_erase(struct block2mtd_dev *dev, loff_t to, size_t len)
{
struct address_space *mapping = dev->blkdev->bd_inode->i_mapping;
struct page *page;
int index = to >> PAGE_SHIFT; // page index
pgoff_t index = to >> PAGE_SHIFT; // page index
int pages = len >> PAGE_SHIFT;
u_long *p;
u_long *max;
@ -103,7 +103,7 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
{
struct block2mtd_dev *dev = mtd->priv;
struct page *page;
int index = from >> PAGE_SHIFT;
pgoff_t index = from >> PAGE_SHIFT;
int offset = from & (PAGE_SIZE-1);
int cpylen;
@ -137,7 +137,7 @@ static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf,
{
struct page *page;
struct address_space *mapping = dev->blkdev->bd_inode->i_mapping;
int index = to >> PAGE_SHIFT; // page index
pgoff_t index = to >> PAGE_SHIFT; // page index
int offset = to & ~PAGE_MASK; // page offset
int cpylen;