Commit 570dcf2c authored by Al Viro's avatar Al Viro
Browse files

Kill ancient crap in s390 compat mmap

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).

Acked-by: default avatarHugh Dickins <>
Signed-off-by: default avatarAl Viro <>
parent 2ea1d13f
......@@ -642,11 +642,6 @@ static inline long do_mmap2(
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;
if (file)
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