Merge tag 'mm-hotfixes-stable-2023-03-14-16-51' of...

Merge tag 'mm-hotfixes-stable-2023-03-14-16-51' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "Eleven hotfixes.

  Four of these are cc:stable and the remainder address post-6.2 issues
  or aren't considered suitable for backporting.

  Seven of these fixes are for MM"

* tag 'mm-hotfixes-stable-2023-03-14-16-51' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/damon/paddr: fix folio_nr_pages() after folio_put() in damon_pa_mark_accessed_or_deactivate()
  mm/damon/paddr: fix folio_size() call after folio_put() in damon_pa_young()
  ocfs2: fix data corruption after failed write
  migrate_pages: try migrate in batch asynchronously firstly
  migrate_pages: move split folios processing out of migrate_pages_batch()
  migrate_pages: fix deadlock in batched migration
  .mailmap: add Alexandre Ghiti personal email address
  mailmap: correct Dikshita Agarwal's Qualcomm email address
  mailmap: updates for Jarkko Sakkinen
  mm/userfaultfd: propagate uffd-wp bit when PTE-mapping the huge zeropage
  mm: teach mincore_hugetlb about pte markers

.mailmap

@@ -28,6 +28,7 @@ Alexander Lobakin <alobakin@pm.me> <bloodyreaper@yandex.ru>
 Alexander Mikhalitsyn <alexander@mihalicyn.com> <alexander.mikhalitsyn@virtuozzo.com>
 Alexander Mikhalitsyn <alexander@mihalicyn.com> <aleksandr.mikhalitsyn@canonical.com>
 Alexandre Belloni <alexandre.belloni@bootlin.com> <alexandre.belloni@free-electrons.com>
+Alexandre Ghiti <alex@ghiti.fr> <alexandre.ghiti@canonical.com>
 Alexei Starovoitov <ast@kernel.org> <alexei.starovoitov@gmail.com>
 Alexei Starovoitov <ast@kernel.org> <ast@fb.com>
 Alexei Starovoitov <ast@kernel.org> <ast@plumgrid.com>
@@ -121,7 +122,7 @@ Dengcheng Zhu <dzhu@wavecomp.com> <dengcheng.zhu@gmail.com>
 Dengcheng Zhu <dzhu@wavecomp.com> <dengcheng.zhu@imgtec.com>
 Dengcheng Zhu <dzhu@wavecomp.com> <dengcheng.zhu@mips.com>
 <dev.kurt@vandijck-laurijssen.be> <kurt.van.dijck@eia.be>
-Dikshita Agarwal <dikshita@qti.qualcomm.com> <dikshita@codeaurora.org>
+Dikshita Agarwal <quic_dikshita@quicinc.com> <dikshita@codeaurora.org>
 Dmitry Baryshkov <dbaryshkov@gmail.com>
 Dmitry Baryshkov <dbaryshkov@gmail.com> <[dbaryshkov@gmail.com]>
 Dmitry Baryshkov <dbaryshkov@gmail.com> <dmitry_baryshkov@mentor.com>
@@ -194,6 +195,7 @@ Jan Glauber <jan.glauber@gmail.com> <jang@linux.vnet.ibm.com>
 Jan Glauber <jan.glauber@gmail.com> <jglauber@cavium.com>
 Jarkko Sakkinen <jarkko@kernel.org> <jarkko.sakkinen@linux.intel.com>
 Jarkko Sakkinen <jarkko@kernel.org> <jarkko@profian.com>
+Jarkko Sakkinen <jarkko@kernel.org> <jarkko.sakkinen@tuni.fi>
 Jason Gunthorpe <jgg@ziepe.ca> <jgg@mellanox.com>
 Jason Gunthorpe <jgg@ziepe.ca> <jgg@nvidia.com>
 Jason Gunthorpe <jgg@ziepe.ca> <jgunthorpe@obsidianresearch.com>

fs/ocfs2/aops.c

@@ -1977,11 +1977,26 @@ int ocfs2_write_end_nolock(struct address_space *mapping,
 	}
 
 	if (unlikely(copied < len) && wc->w_target_page) {
+		loff_t new_isize;
+
 		if (!PageUptodate(wc->w_target_page))
 			copied = 0;
 
-		ocfs2_zero_new_buffers(wc->w_target_page, start+copied,
-				       start+len);
+		new_isize = max_t(loff_t, i_size_read(inode), pos + copied);
+		if (new_isize > page_offset(wc->w_target_page))
+			ocfs2_zero_new_buffers(wc->w_target_page, start+copied,
+					       start+len);
+		else {
+			/*
+			 * When page is fully beyond new isize (data copy
+			 * failed), do not bother zeroing the page. Invalidate
+			 * it instead so that writeback does not get confused
+			 * put page & buffer dirty bits into inconsistent
+			 * state.
+			 */
+			block_invalidate_folio(page_folio(wc->w_target_page),
+						0, PAGE_SIZE);
+		}
 	}
 	if (wc->w_target_page)
 		flush_dcache_page(wc->w_target_page);

mm/damon/paddr.c

@@ -130,7 +130,6 @@ static bool damon_pa_young(unsigned long paddr, unsigned long *folio_sz)
 			accessed = false;
 		else
 			accessed = true;
-		folio_put(folio);
 		goto out;
 	}
 
@@ -144,10 +143,10 @@ static bool damon_pa_young(unsigned long paddr, unsigned long *folio_sz)
 
 	if (need_lock)
 		folio_unlock(folio);
-	folio_put(folio);
 
 out:
 	*folio_sz = folio_size(folio);
+	folio_put(folio);
 	return accessed;
 }
 
@@ -281,8 +280,8 @@ static inline unsigned long damon_pa_mark_accessed_or_deactivate(
 			folio_mark_accessed(folio);
 		else
 			folio_deactivate(folio);
-		folio_put(folio);
 		applied += folio_nr_pages(folio);
+		folio_put(folio);
 	}
 	return applied * PAGE_SIZE;
 }

mm/huge_memory.c

@@ -2037,7 +2037,7 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
 {
 	struct mm_struct *mm = vma->vm_mm;
 	pgtable_t pgtable;
-	pmd_t _pmd;
+	pmd_t _pmd, old_pmd;
 	int i;
 
 	/*
@@ -2048,7 +2048,7 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
 	 *
 	 * See Documentation/mm/mmu_notifier.rst
 	 */
-	pmdp_huge_clear_flush(vma, haddr, pmd);
+	old_pmd = pmdp_huge_clear_flush(vma, haddr, pmd);
 
 	pgtable = pgtable_trans_huge_withdraw(mm, pmd);
 	pmd_populate(mm, &_pmd, pgtable);
@@ -2057,6 +2057,8 @@ static void __split_huge_zero_page_pmd(struct vm_area_struct *vma,
 		pte_t *pte, entry;
 		entry = pfn_pte(my_zero_pfn(haddr), vma->vm_page_prot);
 		entry = pte_mkspecial(entry);
+		if (pmd_uffd_wp(old_pmd))
+			entry = pte_mkuffd_wp(entry);
 		pte = pte_offset_map(&_pmd, haddr);
 		VM_BUG_ON(!pte_none(*pte));
 		set_pte_at(mm, haddr, pte, entry);

mm/mincore.c

@@ -33,7 +33,7 @@ static int mincore_hugetlb(pte_t *pte, unsigned long hmask, unsigned long addr,
 	 * Hugepages under user process are always in RAM and never
 	 * swapped out, but theoretically it needs to be checked.
 	 */
-	present = pte && !huge_pte_none(huge_ptep_get(pte));
+	present = pte && !huge_pte_none_mostly(huge_ptep_get(pte));
 	for (; addr != end; vec++, addr += PAGE_SIZE)
 		*vec = present;
 	walk->private = vec;