Re: page->index limitation on 32bit system?

On Sat, Feb 20, 2021 at 07:10:14AM +0800, Qu Wenruo wrote:

On 2021/2/20 上午12:12, Theodore Ts'o wrote:

quoted

On Fri, Feb 19, 2021 at 08:37:30AM +0800, Qu Wenruo wrote:

quoted

So it means the 32bit archs are already 2nd tier targets for at least
upstream linux kernel?

At least as far as btrfs is concerned, anyway....

I'm afraid that would be the case.

btrfs already treats 32-bit arches as second class citizens.
I found a1fbc6750e212c5675a4e48d7f51d44607eb8756 by code inspection,
so clearly it hasn't been tested in five years.  I wouldn't recommend
that anybody use btrfs with a 32-bit kernel.