On Wed, Nov 18, 2020 at 06:42:45AM +0000, Daniel Rosenberg wrote: > Expand f2fs's casefolding support to include encrypted directories. To > index casefolded+encrypted directories, we use the SipHash of the > casefolded name, keyed by a key derived from the directory's fscrypt > master key. This ensures that the dirhash doesn't leak information > about the plaintext filenames. > > Encryption keys are unavailable during roll-forward recovery, so we > can't compute the dirhash when recovering a new dentry in an encrypted + > casefolded directory. To avoid having to force a checkpoint when a new > file is fsync'ed, store the dirhash on-disk appended to i_name. > > This patch incorporates work by Eric Biggers <ebiggers@xxxxxxxxxx> > and Jaegeuk Kim <jaegeuk@xxxxxxxxxx>. > > Co-developed-by: Eric Biggers <ebiggers@xxxxxxxxxx> > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> > Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx> Looks good. If it's needed (some may claim it's not needed because I have a Co-developed-by), you can add: Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx> - Eric
