tree 0a068f4fcf29fae36794a0b653e6e4f136b62241
parent 90888816ba1bf1c4eff1e7e4220c1afc802f0fd3
author David S. Miller <davem@davemloft.net> 1209333242 -0700
committer David S. Miller <davem@davemloft.net> 1209334155 -0700

sparc64: Fix accidental syscall restart on child return from clone/fork/vfork.

This fixes a regression added by
238468b2ac76020c192a7402c92df5097916bf4a ("[SPARC64]: Use trap type
stored in pt_regs to handle syscall restart.")

Because we now encode the "returning from syscall" status in the
pt_regs area, we have to be mindful to zap it out in the child
of a fork.

During a parallel kernel build I saw an accidental -EINTR return
from vfork() in 'make' because of this bug.

Signed-off-by: David S. Miller <davem@davemloft.net>