The patch titled
Subject: cifs: convert wdata_alloc_and_fillpages() to use filemap_get_folios_tag()
has been added to the -mm mm-unstable branch. Its filename is
cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Vishal Moola (Oracle)" <vishal.moola@xxxxxxxxx>
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@xxxxxxxxx
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Acked-by: Paulo Alcantara (SUSE) <pc@xxxxxx>
Cc: Tom Talpey <tom@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- 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@xxxxxxxxx are
mm-memory-add-vm_normal_folio.patch
madvise-convert-madvise_cold_or_pageout_pte_range-to-use-folios.patch
mm-damon-convert-damon_pa_mark_accessed_or_deactivate-to-use-folios.patch
mm-swap-convert-deactivate_page-to-folio_deactivate.patch
ext4-convert-mext_page_double_lock-to-mext_folio_double_lock.patch
mm-khugepaged-introduce-release_pte_folio-to-replace-release_pte_page.patch
mm-khugepaged-convert-release_pte_pages-to-use-folios.patch
pagemap-add-filemap_grab_folio.patch
filemap-added-filemap_get_folios_tag.patch
filemap-convert-__filemap_fdatawait_range-to-use-filemap_get_folios_tag.patch
page-writeback-convert-write_cache_pages-to-use-filemap_get_folios_tag.patch
afs-convert-afs_writepages_region-to-use-filemap_get_folios_tag.patch
btrfs-convert-btree_write_cache_pages-to-use-filemap_get_folio_tag.patch
btrfs-convert-extent_write_cache_pages-to-use-filemap_get_folios_tag.patch
ceph-convert-ceph_writepages_start-to-use-filemap_get_folios_tag.patch
cifs-convert-wdata_alloc_and_fillpages-to-use-filemap_get_folios_tag.patch
ext4-convert-mpage_prepare_extent_to_map-to-use-filemap_get_folios_tag.patch
f2fs-convert-f2fs_fsync_node_pages-to-use-filemap_get_folios_tag.patch
f2fs-convert-f2fs_flush_inline_data-to-use-filemap_get_folios_tag.patch
f2fs-convert-f2fs_sync_node_pages-to-use-filemap_get_folios_tag.patch
f2fs-convert-f2fs_write_cache_pages-to-use-filemap_get_folios_tag.patch
f2fs-convert-last_fsync_dnode-to-use-filemap_get_folios_tag.patch
f2fs-convert-f2fs_sync_meta_pages-to-use-filemap_get_folios_tag.patch
gfs2-convert-gfs2_write_cache_jdata-to-use-filemap_get_folios_tag.patch
nilfs2-convert-nilfs_lookup_dirty_data_buffers-to-use-filemap_get_folios_tag.patch
nilfs2-convert-nilfs_lookup_dirty_node_buffers-to-use-filemap_get_folios_tag.patch
nilfs2-convert-nilfs_btree_lookup_dirty_buffers-to-use-filemap_get_folios_tag.patch
nilfs2-convert-nilfs_copy_dirty_pages-to-use-filemap_get_folios_tag.patch
nilfs2-convert-nilfs_clear_dirty_pages-to-use-filemap_get_folios_tag.patch
filemap-remove-find_get_pages_range_tag.patch
