diff options
| author | Sukadev Bhattiprolu <sukadev@us.ibm.com> | 2006-09-29 11:00:07 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 18:18:12 +0200 |
| commit | f400e198b2ed26ce55b22a1412ded0896e7516ac (patch) | |
| tree | a3d78bfc1c20635e199fe0fe85aaa1d8792acc58 /arch/x86_64/mm/fault.c | |
| parent | [PATCH] Fix conflict with the is_init identifier on parisc (diff) | |
| download | linux-f400e198b2ed26ce55b22a1412ded0896e7516ac.tar.xz linux-f400e198b2ed26ce55b22a1412ded0896e7516ac.zip | |
[PATCH] pidspace: is_init()
This is an updated version of Eric Biederman's is_init() patch.
(http://lkml.org/lkml/2006/2/6/280). It applies cleanly to 2.6.18-rc3 and
replaces a few more instances of ->pid == 1 with is_init().
Further, is_init() checks pid and thus removes dependency on Eric's other
patches for now.
Eric's original description:
There are a lot of places in the kernel where we test for init
because we give it special properties. Most significantly init
must not die. This results in code all over the kernel test
->pid == 1.
Introduce is_init to capture this case.
With multiple pid spaces for all of the cases affected we are
looking for only the first process on the system, not some other
process that has pid == 1.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: <lxc-devel@lists.sourceforge.net>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/mm/fault.c')
| -rw-r--r-- | arch/x86_64/mm/fault.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c index 9ba54cc2b5f6..3751b4788e28 100644 --- a/arch/x86_64/mm/fault.c +++ b/arch/x86_64/mm/fault.c @@ -244,7 +244,7 @@ static int is_errata93(struct pt_regs *regs, unsigned long address) int unhandled_signal(struct task_struct *tsk, int sig) { - if (tsk->pid == 1) + if (is_init(tsk)) return 1; if (tsk->ptrace & PT_PTRACED) return 0; @@ -580,7 +580,7 @@ no_context: */ out_of_memory: up_read(&mm->mmap_sem); - if (current->pid == 1) { + if (is_init(current)) { yield(); goto again; } |