Re: [PATCH v4 2/2] f2fs: introduce F2FS_IOC_START_ATOMIC_REPLACE

[Christoph Hellwig]

On Tue, Oct 04, 2022 at 10:13:51AM -0700, Daeho Jeong wrote:
> From: Daeho Jeong <daehojeong@xxxxxxxxxx>
> 
> introduce a new ioctl to replace the whole content of a file atomically,
> which means it induces truncate and content update at the same time.
> We can start it with F2FS_IOC_START_ATOMIC_REPLACE and complete it with
> F2FS_IOC_COMMIT_ATOMIC_WRITE. Or abort it with
> F2FS_IOC_ABORT_ATOMIC_WRITE.

It would be great to Cc Darrick and linux-fsdevel as there have been
attempts to do this properly at the VFS level instead of a completely
undocumented ioctl.