Commit d9bc85de46ca for kernel

commit d9bc85de46cad90851c346b592005090674b7669
Author: Libing Zhou <libing.zhou@nokia-sbell.com>
Date:   Thu Oct 15 20:13:42 2020 -0700

    ROMFS: support inode blocks calculation

    When use 'stat' tool to display file status, the 'Blocks' field always in
    '0', this is not good for tool 'du'(e.g.: busybox 'du'), it always output
    '0' size for the files under ROMFS since such tool calculates number of
    512B Blocks.

    This patch calculates approx.  number of 512B blocks based on inode size.

    Signed-off-by: Libing Zhou <libing.zhou@nokia-sbell.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Cc: David Howells <dhowells@redhat.com>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Link: http://lkml.kernel.org/r/20200811052606.4243-1-libing.zhou@nokia-sbell.com
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index e582d001f792..b1b7d3f5752f 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -356,6 +356,7 @@ static struct inode *romfs_iget(struct super_block *sb, unsigned long pos)
 	}

 	i->i_mode = mode;
+	i->i_blocks = (i->i_size + 511) >> 9;

 	unlock_new_inode(i);
 	return i;