[merged mm-stable] cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag.patch removed from -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The quilt patch titled
     Subject: cifs: convert wdata_alloc_and_fillpages() to use filemap_get_folios_tag()
has been removed from the -mm tree.  Its filename was
     cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Subject: cifs: convert wdata_alloc_and_fillpages() to use filemap_get_folios_tag()
Date: Wed, 4 Jan 2023 13:14:34 -0800

This is in preparation for the removal of find_get_pages_range_tag().  Now
also supports the use of large folios.

Since tofind might be larger than the max number of folios in a
folio_batch (15), we loop through filling in wdata->pages pulling more
batches until we either reach tofind pages or run out of folios.

This function may not return all pages in the last found folio before
tofind pages are reached.

Link: https://lkml.kernel.org/r/20230104211448.4804-10-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: Tom Talpey <tom@talpey.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/fs/cifs/file.c~cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag
+++ a/fs/cifs/file.c
@@ -2527,14 +2527,40 @@ wdata_alloc_and_fillpages(pgoff_t tofind
 			  unsigned int *found_pages)
 {
 	struct cifs_writedata *wdata;
-
+	struct folio_batch fbatch;
+	unsigned int i, idx, p, nr;
 	wdata = cifs_writedata_alloc((unsigned int)tofind,
 				     cifs_writev_complete);
 	if (!wdata)
 		return NULL;
 
-	*found_pages = find_get_pages_range_tag(mapping, index, end,
-				PAGECACHE_TAG_DIRTY, tofind, wdata->pages);
+	folio_batch_init(&fbatch);
+	*found_pages = 0;
+
+again:
+	nr = filemap_get_folios_tag(mapping, index, end,
+				PAGECACHE_TAG_DIRTY, &fbatch);
+	if (!nr)
+		goto out; /* No dirty pages left in the range */
+
+	for (i = 0; i < nr; i++) {
+		struct folio *folio = fbatch.folios[i];
+
+		idx = 0;
+		p = folio_nr_pages(folio);
+add_more:
+		wdata->pages[*found_pages] = folio_page(folio, idx);
+		folio_get(folio);
+		if (++*found_pages == tofind) {
+			folio_batch_release(&fbatch);
+			goto out;
+		}
+		if (++idx < p)
+			goto add_more;
+	}
+	folio_batch_release(&fbatch);
+	goto again;
+out:
 	return wdata;
 }
 
_

Patches currently in -mm which might be from vishal.moola@gmail.com are

mm-add-folio_estimated_sharers.patch
mm-mempolicy-convert-queue_pages_pmd-to-queue_folios_pmd.patch
mm-mempolicy-convert-queue_pages_pte_range-to-queue_folios_pte_range.patch
mm-mempolicy-convert-queue_pages_hugetlb-to-queue_folios_hugetlb.patch
mm-mempolicy-convert-queue_pages_required-to-queue_folio_required.patch
mm-mempolicy-convert-migrate_page_add-to-migrate_folio_add.patch
mm-add-folio_get_nontail_page.patch
mm-migrate-add-folio_movable_ops.patch
mm-migrate-convert-isolate_movable_page-to-use-folios.patch
mm-migrate-convert-putback_movable_pages-to-use-folios.patch