On Thu, Mar 23, 2023 at 03:30:38PM +0000, Matthew Wilcox wrote: > I really want to see a cheaper abstraction for accessing the block device > than BHs. Or xfs_buf for that matter. You literally can just use the bdev page cache using the normal page cache helpers. It's not quite what most of these file systems expect, though, especially for the block size < PAGE_SIZE case.
