Commit 53c3debb authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Liu Shixin
Browse files

mm: remove PageAnonExclusive assertions in unuse_pte() 

mainline inclusion
from mainline-v6.8-rc1
commit 8d294a8c6393afbde59cf14a0e8413df4b206698
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I9OCYO
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8d294a8c6393afbde59cf14a0e8413df4b206698

--------------------------------

The page in question is either freshly allocated or known to be in
the swap cache; these assertions are not particularly useful.

Link: https://lkml.kernel.org/r/20231212164813.2540119-1-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
[ Dep-of: f238b8c33c67 ("arm64: mm: swap: support THP_SWAP on hardware
  with MTE"). ]
Signed-off-by: default avatarLiu Shixin <liushixin2@huawei.com>
parent 868662e0

mm/swapfile.c

+0 −4
Original line number Diff line number Diff line
@@ -1887,10 +1887,6 @@ static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd, 
	 */

	arch_swap_restore(entry, page_folio(page));



	/* See do_swap_page() */

	BUG_ON(!PageAnon(page) && PageMappedToDisk(page));

	BUG_ON(PageAnon(page) && PageAnonExclusive(page));



	dec_mm_counter(vma->vm_mm, MM_SWAPENTS);

	inc_mm_counter(vma->vm_mm, MM_ANONPAGES);

	add_reliable_page_counter(page, vma->vm_mm, 1);