On Mon, Nov 26, 2018 at 11:06:29AM +1100, Stephen Rothwell wrote: > Introduced by commit > > cf8cddd38bab3 ("btrfs: don't abuse REQ_OP_* flags for btrfs_map_block") > > exposed by my new use of -Wimplicit-fallthrough > > I am not sure why this has only turned up now (as opposed to earlier > today). It looks like something only in linux-next moved the code around a bit. Either way the fallthough looks fine, it will just need a little /*FALLTHRU*/ annotation.