On Thu, 2 Feb 2023 16:55:03 -0800, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
>
> When writing a page from an encrypted file that is using
> filesystem-layer encryption (not inline encryption), ext4 encrypts the
> pagecache page into a bounce page, then writes the bounce page.
>
> It also passes the bounce page to wbc_account_cgroup_owner(). That's
> incorrect, because the bounce page is a newly allocated temporary page
> that doesn't have the memory cgroup of the original pagecache page.
> This makes wbc_account_cgroup_owner() not account the I/O to the owner
> of the pagecache page as it should.
>
> [...]
Applied, thanks!
[1/1] ext4: fix cgroup writeback accounting with fs-layer encryption
commit: ffec85d53d0f39ee4680a2cf0795255e000e1feb
Best regards,
--
Theodore Ts'o <tytso@xxxxxxx>
