linux-kernel - linux-next: manual merge of the drm-xe tree with the mm tree

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Message-ID: <20250307122954.1ab65809@canb.auug.org.au>
Date: Fri, 7 Mar 2025 12:29:54 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Lucas De Marchi <lucas.demarchi@...el.com>, Thomas Hellström <thomas.hellstrom@...ux.intel.com>, Andrew Morton
 <akpm@...ux-foundation.org>
Cc: DRM XE List <intel-xe@...ts.freedesktop.org>, Alistair Popple
 <apopple@...dia.com>, Balbir Singh <balbirs@...dia.com>, Linux Kernel
 Mailing List <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>, Matthew Brost <matthew.brost@...el.com>
Subject: linux-next: manual merge of the drm-xe tree with the mm tree

Hi all,

Today's linux-next merge of the drm-xe tree got a conflict in:

  mm/memory.c

between commit:

  089b22f60a0f ("mm: allow compound zone device pages")

from the mm-unstable branch of the mm tree and commit:

  1afaeb8293c9 ("mm/migrate: Trylock device page in do_swap_page")

from the drm-xe tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc mm/memory.c
index d21f6cded7e3,59b804f4bf3f..000000000000
--- a/mm/memory.c
+++ b/mm/memory.c
@@@ -4473,11 -4348,15 +4473,16 @@@ vm_fault_t do_swap_page(struct vm_faul
  			 * Get a page reference while we know the page can't be
  			 * freed.
  			 */
- 			get_page(vmf->page);
- 			pte_unmap_unlock(vmf->pte, vmf->ptl);
- 			pgmap = page_pgmap(vmf->page);
- 			ret = pgmap->ops->migrate_to_ram(vmf);
- 			put_page(vmf->page);
+ 			if (trylock_page(vmf->page)) {
+ 				get_page(vmf->page);
+ 				pte_unmap_unlock(vmf->pte, vmf->ptl);
 -				ret = vmf->page->pgmap->ops->migrate_to_ram(vmf);
++				pgmap = page_pgmap(vmf->page);
++				ret = pgmap->ops->migrate_to_ram(vmf);
+ 				unlock_page(vmf->page);
+ 				put_page(vmf->page);
+ 			} else {
+ 				pte_unmap_unlock(vmf->pte, vmf->ptl);
+ 			}
  		} else if (is_hwpoison_entry(entry)) {
  			ret = VM_FAULT_HWPOISON;
  		} else if (is_pte_marker_entry(entry)) {

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