btrfs: update comment for try_release_extent_state()

Drop reference to pages from the comment since the function is fully folio
aware and works regardless of how many pages are in the folio. Also while
at it, capitalize the first word and make it more explicit that
release_folio is a callback from struct address_space_operations.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 89f866777698dea56ee5c8f90d71503be513e81c..c0d36e64b2b67578fa4186362bf08efb28a20b9f 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2614,9 +2614,9 @@ int extent_invalidate_folio(struct extent_io_tree *tree,
 }
 
 /*
- * a helper for release_folio, this tests for areas of the page that
- * are locked or under IO and drops the related state bits if it is safe
- * to drop the page.
+ * A helper for struct address_space_operations::release_folio, this tests for
+ * areas of the folio that are locked or under IO and drops the related state
+ * bits if it is safe to drop the folio.
  */
 static bool try_release_extent_state(struct extent_io_tree *tree,
                                     struct folio *folio)