The patch titled Subject: ROMFS: support inode blocks calculation has been added to the -mm tree. Its filename is romfs-support-inode-blocks-calculation.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/romfs-support-inode-blocks-calculation.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/romfs-support-inode-blocks-calculation.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Libing Zhou <libing.zhou@xxxxxxxxxxxxxxx> Subject: 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. Link: http://lkml.kernel.org/r/20200811052606.4243-1-libing.zhou@xxxxxxxxxxxxxxx Signed-off-by: Libing Zhou <libing.zhou@xxxxxxxxxxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/romfs/super.c | 1 + 1 file changed, 1 insertion(+) --- a/fs/romfs/super.c~romfs-support-inode-blocks-calculation +++ a/fs/romfs/super.c @@ -356,6 +356,7 @@ static struct inode *romfs_iget(struct s } i->i_mode = mode; + i->i_blocks = (i->i_size + 511) >> 9; unlock_new_inode(i); return i; _ Patches currently in -mm which might be from libing.zhou@xxxxxxxxxxxxxxx are romfs-support-inode-blocks-calculation.patch