[PATCH] s390: add ptr_to_compat()

Add ptr_to_compat() to s390 - needed by the new robust-futex code.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>

untested. CHECKME: am i right about the 0x7fffffffUL masking?

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-03-27 01:16:09 -08:00 коммит произвёл Linus Torvalds
Родитель 66e863acd7
Коммит f267fa9f5b
1 изменённых файлов: 5 добавлений и 0 удалений

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@ -128,6 +128,11 @@ static inline void __user *compat_ptr(compat_uptr_t uptr)
return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
}
static inline compat_uptr_t ptr_to_compat(void __user *uptr)
{
return (u32)(unsigned long)uptr;
}
static inline void __user *compat_alloc_user_space(long len)
{
unsigned long stack;