lustre/kernel_patches/patches/mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch

   1 Index: linux-4.18.0-372.32.1.el8_6/mm/page-writeback.c
   2 ===================================================================
   3 --- linux-4.18.0-372.32.1.el8_6.orig/mm/page-writeback.c
   4 +++ linux-4.18.0-372.32.1.el8_6/mm/page-writeback.c
   5 @@ -2894,7 +2894,12 @@ EXPORT_SYMBOL_GPL(wait_on_page_writeback
   6   */
   7  void wait_for_stable_page(struct page *page)
   8  {
   9 -       if (page->mapping->host->i_sb->s_iflags & SB_I_STABLE_WRITES)
  10 +       struct inode *inode = page->mapping->host;
  11 +       struct super_block *sb = inode->i_sb;
  12 +
  13 +       if ((sb->s_iflags & SB_I_STABLE_WRITES) ||
  14 +           (sb_is_blkdev_sb(sb) &&
  15 +            blk_queue_stable_writes(I_BDEV(inode)->bd_disk->queue)))
  16                 wait_on_page_writeback(page);
  17  }
  18  EXPORT_SYMBOL_GPL(wait_for_stable_page);