btrfs: don't redirty pages in compress_file_range

[tomoyo/tomoyo-test1.git] / fs / btrfs / extent_io.c

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 08fb26d..bcf8244 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -181,22 +181,6 @@ void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end)
        }
 }
 
-void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end)
-{
-       struct address_space *mapping = inode->i_mapping;
-       unsigned long index = start >> PAGE_SHIFT;
-       unsigned long end_index = end >> PAGE_SHIFT;
-       struct folio *folio;
-
-       while (index <= end_index) {
-               folio = filemap_get_folio(mapping, index);
-               filemap_dirty_folio(mapping, folio);
-               folio_account_redirty(folio);
-               index += folio_nr_pages(folio);
-               folio_put(folio);
-       }
-}
-
 static void process_one_page(struct btrfs_fs_info *fs_info,
                             struct page *page, struct page *locked_page,
                             unsigned long page_ops, u64 start, u64 end)
@@ -2178,7 +2162,7 @@ retry:
  * locked.
  */
 void extent_write_locked_range(struct inode *inode, u64 start, u64 end,
-                              struct writeback_control *wbc)
+                              struct writeback_control *wbc, bool pages_dirty)
 {
        bool found_error = false;
        int ret = 0;
@@ -2204,14 +2188,11 @@ void extent_write_locked_range(struct inode *inode, u64 start, u64 end,
                int nr = 0;
 
                page = find_get_page(mapping, cur >> PAGE_SHIFT);
-               /*
-                * All pages in the range are locked since
-                * btrfs_run_delalloc_range(), thus there is no way to clear
-                * the page dirty flag.
-                */
                ASSERT(PageLocked(page));
-               ASSERT(PageDirty(page));
-               clear_page_dirty_for_io(page);
+               if (pages_dirty) {
+                       ASSERT(PageDirty(page));
+                       clear_page_dirty_for_io(page);
+               }
 
                ret = __extent_writepage_io(BTRFS_I(inode), page, &bio_ctrl,
                                            i_size, &nr);