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Kill ancient crap in s390 compat mmap

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We've had TASK_SIZE set to 1<<31 for 31bit tasks since May 2004.
Before that old32_mmap() had to deal with do_mmap_pgoff() giving
it an address out of range.  It had tried to do that by checking
return value and doing do_munmap() (at wrong address, BTW).

IOW, that code had been dead for 5.5 years (and bogus - for 8).
Kill.

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 2009-11-30 16:52:36 -05:00
parent 2ea1d13f64
commit 570dcf2c15
1 changed files with 0 additions and 5 deletions
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5
arch/s390/kernel/compat_linux.c
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@ -642,11 +642,6 @@ static inline long do_mmap2(
down_write(&current->mm->mmap_sem);
error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
if (!IS_ERR((void *) error) && error + len >= 0x80000000ULL) {
/* Result is out of bounds. */
do_munmap(current->mm, addr, len);
error = -ENOMEM;
}
up_write(&current->mm->mmap_sem);
if (file)