On Tue, Sep 21, 2021 at 09:29:25AM +0100, Christoph Hellwig wrote: > On Fri, Sep 17, 2021 at 06:30:55PM -0700, Darrick J. Wong wrote: > > From: Darrick J. Wong <djwong@xxxxxxxxxx> > > > > Create a function that ensures that the storage backing part of a file > > contains zeroes and will not trip over old media errors if the contents > > are re-read. > > I don't think this has anything to do with direct I/O, so I'd rather > not have it clutter direct-io.c. Also do we really want to wait > synchronously for every bio instead of batching them up? Especially > as a simple bio_chain is probably all that is needed. __blkdev_issue_zeroout looks appropriate for chaining. I'll move the zeroout routine into a new lowlevel.c file, since this isn't buffered io either. --D
