[minixfs] conversion to kmap_local_page()

[Al Viro]

	Sat around since March; rebased to 6.7-rc1, the only
change is put_and_unmap_page() renamed to unmap_and_put_page() ;-)
That's a minixfs counterpart of ext2 and sysv patchsets.

	Lives in vfs.git #work.minix, individual patches in
followups.

Shortlog:
Al Viro (4):
      minixfs: use offset_in_page()
      minixfs: change the signature of dir_get_page()
      minixfs: Use dir_put_page() in minix_unlink() and minix_rename()
      minixfs: switch to kmap_local_page()

Diffstat:
 fs/minix/dir.c   | 83 +++++++++++++++++++++++---------------------------------
 fs/minix/namei.c | 12 +++-----
 2 files changed, 38 insertions(+), 57 deletions(-)