On Tue, Dec 01, 2020 at 12:02:19PM +0100, Christian Brauner wrote:

On Tue, Dec 01, 2020 at 11:54:45AM +0100, Christoph Hellwig wrote:

quoted

What is the reason for the config option?  The only thing that it
controls is setting of a single flag.

I wanted to be conservative and give users the option to disable this on
their kernel. Would you prefer if I drop it?

I don't think adding an option per file system scales in any way.  If
there is some strong urge to disable the functionality (which I see no
reason for) we could add something like a global sysctl for all on-disk
file systems.