[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>

diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index df810ca..776310f 100644 (file)
--- 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 4d10ec3..4184271 100644 (file)
--- 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;

diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index 510e513..a880409 100644 (file)
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -114,17 +114,9 @@ extern unsigned long end_iomem;
 extern unsigned long pg0[1024];
 
 /*
- * BAD_PAGETABLE is used when we need a bogus page-table, while
- * BAD_PAGE is used for a bogus page.
- *
  * ZERO_PAGE is a global shared page that is always zero: used
  * for zero-mapped memory areas etc..
  */
-extern pte_t __bad_page(void);
-extern pte_t * __bad_pagetable(void);
-
-#define BAD_PAGETABLE __bad_pagetable()
-#define BAD_PAGE __bad_page()
 
 #define ZERO_PAGE(vaddr) virt_to_page(empty_zero_page)