Commit 8e21683b authored by Paolo 'Blaisorblade' Giarrusso's avatar Paolo 'Blaisorblade' Giarrusso Committed by Linus Torvalds
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[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.:

		while(!reading) sched_yield();

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

Also, remove some other useless definitions I met.

Acked-by: default avatarJeff Dike <>
Signed-off-by: default avatarPaolo 'Blaisorblade' Giarrusso <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent f767b02f
......@@ -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;
reading = 0;
err = os_write_file(to->[1], &c, sizeof(c));
if(err != sizeof(c))
panic("write of switch_pipe failed, err = %d", -err);
reading = 1;
if(from->[0] == -1)
if(from->[0] == -1)
os_kill_process(os_getpid(), 0);
err = os_read_file(from->[0], &c, sizeof(c));
......@@ -111,12 +111,6 @@ struct seq_operations cpuinfo_op = {
.show = show_cpuinfo,
pte_t * __bad_pagetable(void)
panic("Someone should implement __bad_pagetable");
/* Set in linux_main */
unsigned long host_task_size;
unsigned long task_size;
......@@ -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)
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