[PATCH] uml: remove jail mode + other leftovers

This var is currently useless, as it's apparent from reading the code. Until
2.6.11 it was used in some code related to jail mode, in the same proc.:

        if(jail){
		while(!reading) sched_yield();
	}

jail mode has been dropped, together with that use, so let's finish dropping
this.

Also, remove some other useless definitions I met.

Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 1 insertions, 13 deletions

diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index df810ca8fc12..776310fd5b8b 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -32,10 +32,6 @@ void *switch_to_tt(void *prev, void *next, void *last)
         unsigned long flags;
         int err, vtalrm, alrm, prof, cpu;
         char c;
-        /* jailing and SMP are incompatible, so this doesn't need to be 
-         * made per-cpu 
-         */
-        static int reading;
 
         from = prev;
         to = next;
@@ -59,13 +55,11 @@ void *switch_to_tt(void *prev, void *next, void *last)
         c = 0;
         set_current(to);
 
-        reading = 0;
         err = os_write_file(to->thread.mode.tt.switch_pipe[1], &c, sizeof(c));
         if(err != sizeof(c))
                 panic("write of switch_pipe failed, err = %d", -err);
 
-        reading = 1;
-        if(from->thread.mode.tt.switch_pipe[0] == -1)
+        if(from->thread.mode.tt.switch_pipe[0] == -1)
                 os_kill_process(os_getpid(), 0);
 
         err = os_read_file(from->thread.mode.tt.switch_pipe[0], &c, sizeof(c));
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 4d10ec372a67..418427107b29 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -111,12 +111,6 @@ struct seq_operations cpuinfo_op = {
         .show   = show_cpuinfo,
 };
 
-pte_t * __bad_pagetable(void)
-{
-        panic("Someone should implement __bad_pagetable");
-        return(NULL);
-}
-
 /* Set in linux_main */
 unsigned long host_task_size;
 unsigned long task_size;