Re: [PATCH 2/2] dax: fix bdev NULL pointer dereferences

From: Matthew Wilcox
Date: Tue Feb 02 2016 - 15:14:36 EST


On Tue, Feb 02, 2016 at 10:59:41AM -0800, Dan Williams wrote:
> True, but in this case we're just trying to resolve the bdev for a
> inode / sector combination to already allocated storage. So
> get_block() is a misnomer, this is just get_bdev() to resolve a
> super_block-inode+sector tuple to a bdev for cases when s_bdev is the
> wrong answer.

Then let's call it that. i_ops->get_bdev(struct inode *inode, pgoff_t index)
And if it doesn't exist, use i_sb->s_bdev.