On Mon, Jan 11, 2021 at 11:50:27AM -0800, Eric Biggers wrote: > On Mon, Jan 11, 2021 at 11:52:01AM +0100, Christoph Hellwig wrote: > > On Fri, Jan 08, 2021 at 11:58:55PM -0800, Eric Biggers wrote: > > > + if ((flags & S_VERSION) && inode_maybe_inc_iversion(inode, false)) > > > + dirty_flags |= I_DIRTY_SYNC; > > > > fat does not support i_version updates, so this bit can be skipped. > > Is that really the case? Any filesystem (including fat) can be mounted with > "iversion", which causes SB_I_VERSION to be set. > > A lot of filesystems (including fat) don't store i_version to disk, but it looks > like it will still get updated in-memory. Could anything be relying on that? As Dave pointed out i_version can't really work for fat. But I guess that is indeed out of scope for this series, so let's go ahead with this version for now: Reviewed-by: Christoph Hellwig <hch@xxxxxx>