Re: [PATCH] iomap: Remove FGP_NOFS from iomap_get_folio()

On Wed, Jun 24, 2026 at 06:42:26PM +0100, Matthew Wilcox (Oracle) wrote:
> FGP_NOFS is legacy; filesystems should be using memalloc_nofs_save/restore
> instead.  We have it here in iomap because it was buried in
> grab_cache_page_write_begin() and we didn't want to change this behaviour
> as part of the folio transition.
> 
> I have tested this with XFS and see no issues.  Other filesystems (cc'd)
> may need to make adjustments.  Please test with lockdep enabled.

I think the most interesting one to test here would be gfs2 as it has
rather alaborate locking in the write path.