tree 810b33b488093ecac152252cbe22d4d62c7c9763
parent c182ae42cc3611f7b3fa803c0bcab6e5d29bea63
author David Rientjes <rientjes@google.com> 1346209041 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1346265141 -0700

mm, slab: lock the correct nodelist after reenabling irqs

cache_grow() can reenable irqs so the cpu (and node) can change, so ensure
that we take list_lock on the correct nodelist.

This fixes an issue with commit 072bb0aa5e06 ("mm: sl[au]b: add
knowledge of PFMEMALLOC reserve pages") where list_lock for the wrong
node was taken after growing the cache.

Reported-and-tested-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>