On Tue, Mar 09, 2021 at 04:53:42PM +0100, Christoph Hellwig wrote: > Just use the generic anon_inode file system. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > arch/powerpc/platforms/pseries/cmm.c | 27 ++------------------------- > 1 file changed, 2 insertions(+), 25 deletions(-) > > diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c > index 6d36b858b14df1..9d07e6bea7126c 100644 > +++ b/arch/powerpc/platforms/pseries/cmm.c > @@ -6,6 +6,7 @@ > * Author(s): Brian King (brking@xxxxxxxxxxxxxxxxxx), > */ > > +#include <linux/anon_inodes.h> > #include <linux/ctype.h> > #include <linux/delay.h> > #include <linux/errno.h> > @@ -502,19 +503,6 @@ static struct notifier_block cmm_mem_nb = { > }; > > #ifdef CONFIG_BALLOON_COMPACTION > -static struct vfsmount *balloon_mnt; > - > -static int cmm_init_fs_context(struct fs_context *fc) > -{ > - return init_pseudo(fc, PPC_CMM_MAGIC) ? 0 : -ENOMEM; Should we clean these unusued magic constants too? include/uapi/linux/magic.h:#define PPC_CMM_MAGIC 0xc7571590 Jason