Re: [RFC] iomap: use huge zero folio in iomap_dio_zero

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, May 08, 2024 at 04:43:54AM -0700, Christoph Hellwig wrote:
> On Wed, May 08, 2024 at 11:39:49AM +0000, Pankaj Raghav (Samsung) wrote:
> > At the moment, we can get a reference to the huge zero folio only through
> > the mm interface. 
> > 
> > Even if change the lower level interface to return THP, it can still fail
> > at the mount time and we will need the fallback right?
> 
> Well, that's why I suggest doing it at mount time.  Asking for it deep
> down in the write code is certainly going to be a bit problematic.

Makes sense. But failing to mount because we can't get a huge zero folio
seems wrong as we still can't guarantee it even at mount time.

With the current infrastructure I don't see anyway of geting a huge zero
folio that is guaranteed so that we don't need any fallback.

Let me know what you think.
-- 
Pankaj Raghav




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [NTFS 3]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [NTFS 3]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux