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>
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