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Unify sys_mmap*

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New helper - sys_mmap_pgoff(); switch syscalls to using it.

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2009-11-30 17:37:04 -05:00
parent 0067bd8a55
commit f8b7256096
46 changed files with 109 additions and 907 deletions
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15
arch/powerpc/kernel/syscalls.c
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@ -140,7 +140,6 @@ static inline unsigned long do_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off, int shift)
{
struct file * file = NULL;
unsigned long ret = -EINVAL;
if (!arch_validate_prot(prot))
@ -151,20 +150,8 @@ static inline unsigned long do_mmap2(unsigned long addr, size_t len,
goto out;
off >>= shift;
}
ret = -EBADF;
if (!(flags & MAP_ANONYMOUS)) {
if (!(file = fget(fd)))
goto out;
}
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
down_write(&current->mm->mmap_sem);
ret = do_mmap_pgoff(file, addr, len, prot, flags, off);
up_write(&current->mm->mmap_sem);
if (file)
fput(file);
ret = sys_mmap_pgoff(addr, len, prot, flags, fd, off);
out:
return ret;
}