Commit 5fb9bfe0 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

scsicam: Fix use of page cache 



Convert scsicam to use a folio instead of a page.  There is no need to
check the error flag here; read_cache_folio() will return -EIO if the
folio cannot be read correctly.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
parent 379c7265

drivers/scsi/scsicam.c

+5 −6
Original line number Diff line number Diff line
@@ -34,15 +34,14 @@ unsigned char *scsi_bios_ptable(struct block_device *dev) 
{

	struct address_space *mapping = bdev_whole(dev)->bd_inode->i_mapping;

	unsigned char *res = NULL;

	struct page *page;

	struct folio *folio;



	page = read_mapping_page(mapping, 0, NULL);

	if (IS_ERR(page))

	folio = read_mapping_folio(mapping, 0, NULL);

	if (IS_ERR(folio))

		return NULL;



	if (!PageError(page))

		res = kmemdup(page_address(page) + 0x1be, 66, GFP_KERNEL);

	put_page(page);

	res = kmemdup(folio_address(folio) + 0x1be, 66, GFP_KERNEL);

	folio_put(folio);

	return res;

}

EXPORT_SYMBOL(scsi_bios_ptable);