Merge tag 'fs_for_v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext2, udf, and quota updates from Jan Kara:

 - conversion of ext2 directory code to use folios

 - cleanups in UDF declarations

 - bugfix for quota interaction with file encryption

* tag 'fs_for_v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2: Convert ext2_prepare_chunk and ext2_commit_chunk to folios
  ext2: Convert ext2_make_empty() to use a folio
  ext2: Convert ext2_unlink() and ext2_rename() to use folios
  ext2: Convert ext2_delete_entry() to use folios
  ext2: Convert ext2_empty_dir() to use a folio
  ext2: Convert ext2_add_link() to use a folio
  ext2: Convert ext2_readdir to use a folio
  ext2: Add ext2_get_folio()
  ext2: Convert ext2_check_page to ext2_check_folio
  highmem: Add folio_release_kmap()
  udf: Avoid unneeded variable length array in struct fileIdentDesc
  udf: Annotate struct udf_bitmap with __counted_by
  quota: explicitly forbid quota files from being encrypted

1 files changed, 16 insertions, 2 deletions

diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 99c474de800d..4cacc0e43b51 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -551,10 +551,24 @@ static inline void folio_zero_range(struct folio *folio,
 	zero_user_segments(&folio->page, start, start + length, 0, 0);
 }
 
-static inline void unmap_and_put_page(struct page *page, void *addr)
+/**
+ * folio_release_kmap - Unmap a folio and drop a refcount.
+ * @folio: The folio to release.
+ * @addr: The address previously returned by a call to kmap_local_folio().
+ *
+ * It is common, eg in directory handling to kmap a folio.  This function
+ * unmaps the folio and drops the refcount that was being held to keep the
+ * folio alive while we accessed it.
+ */
+static inline void folio_release_kmap(struct folio *folio, void *addr)
 {
 	kunmap_local(addr);
-	put_page(page);
+	folio_put(folio);
+}
+
+static inline void unmap_and_put_page(struct page *page, void *addr)
+{
+	folio_release_kmap(page_folio(page), addr);
 }
 
 #endif /* _LINUX_HIGHMEM_H */