tree 37b15b57986466531c5a0debb6b52660ca47e86a
parent e3aded3cc289113c7bc729ef4cb75e56d9aa71be
author Hugh Dickins <hugh@veritas.com> 1184834951 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1184864690 -0700

Remove nid_lock from alloc_fresh_huge_page

The fix to that race in alloc_fresh_huge_page() which could give an illegal
node ID did not need nid_lock at all: the fix was to replace static int nid
by static int prev_nid and do the work on local int nid.  nid_lock did make
sure that racers strictly roundrobin the nodes, but that's not something we
need to enforce strictly.  Kill nid_lock.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>