[PATCH] (1/6) alpha fixes

[Alexander Viro]

	Contents:
1)	bogus return value type for ->open() and ->release() on nfsd
(generic, caught on alpha since there ssize_t != int)

2)	missing defines/fields/includes for alpha (accumulated since 2.5.0)

3)	s/p_pptr/parent/, s/p_opptr/real_parent/ done for alpha

4)	(dumb) default_idle() provided (alpha)

5)	alpha/mm/init.c forgot to set max_pfn

6)	fixed off-by-PAGE_OFFSET in populate_pmd() (alpha, again)

	With that patchset the thing builds, boots and seems to be working
(on AS200).

diff -urN C8/fs/nfsd/nfsctl.c C8-nfsctl/fs/nfsd/nfsctl.c
--- C8/fs/nfsd/nfsctl.c	Sun Apr 14 17:53:09 2002
+++ C8-nfsctl/fs/nfsd/nfsctl.c	Thu Apr 18 23:21:29 2002
@@ -98,13 +98,13 @@
 	return size;
 }
 
-static ssize_t TA_open(struct inode *inode, struct file *file)
+static int TA_open(struct inode *inode, struct file *file)
 {
 	file->private_data = NULL;
 	return 0;
 }
 
-static ssize_t TA_release(struct inode *inode, struct file *file)
+static int TA_release(struct inode *inode, struct file *file)
 {
 	void *p = file->private_data;
 	file->private_data = NULL;