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kill useless checks in sparc mremap variants

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Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2009-11-24 08:53:51 -05:00
parent 935874141d
commit 0ec62d2909
5 changed files with 2 additions and 51 deletions
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22
arch/sparc/kernel/sys_sparc32.c
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@ -564,28 +564,6 @@ asmlinkage long sparc32_open(const char __user *filename,
return do_sys_open(AT_FDCWD, filename, flags, mode);
}
extern unsigned long do_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, unsigned long new_addr);
asmlinkage unsigned long sys32_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, u32 __new_addr)
{
unsigned long ret = -EINVAL;
unsigned long new_addr = __new_addr;
if (unlikely(sparc_mmap_check(addr, old_len)))
goto out;
if (unlikely(sparc_mmap_check(new_addr, new_len)))
goto out;
down_write(&current->mm->mmap_sem);
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
up_write(&current->mm->mmap_sem);
out:
return ret;
}
long sys32_lookup_dcookie(unsigned long cookie_high,
unsigned long cookie_low,
char __user *buf, size_t len)