Mel Gorman 18a2f371f5 tmpfs: fix shared mempolicy leak ... This fixes a regression in 3.7-rc, which has since gone into stable. Commit 00442ad04a ("mempolicy: fix a memory corruption by refcount imbalance in alloc_pages_vma()") changed get_vma_policy() to raise the refcount on a shmem shared mempolicy; whereas shmem_alloc_page() went on expecting alloc_page_vma() to drop the refcount it had acquired. This deserves a rework: but for now fix the leak in shmem_alloc_page(). Hugh: shmem_swapin() did not need a fix, but surely it's clearer to use the same refcounting there as in shmem_alloc_page(), delete its onstack mempolicy, and the strange mpol_cond_copy() and __mpol_cond_copy() - those were invented to let swapin_readahead() make an unknown number of calls to alloc_pages_vma() with one mempolicy; but since 00442ad04a, alloc_pages_vma() has kept refcount in balance, so now no problem. Reported-and-tested-by: Tommi Rantala <tt.rantala@gmail.com> Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Hugh Dickins <hughd@google.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-12-06 11:56:43 -08:00
..
backing-dev.c
bootmem.c
bounce.c
cleancache.c
compaction.c	mm: compaction: validate pfn range passed to isolate_freepages_block	2012-12-06 11:17:33 -08:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c
fremap.c
frontswap.c
highmem.c
huge_memory.c
hugetlb_cgroup.c
hugetlb.c
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
maccess.c
madvise.c
Makefile
memblock.c
memcontrol.c
memory_hotplug.c
memory-failure.c	mm: soft offline: split thp at the beginning of soft_offline_page()	2012-11-30 08:51:18 -08:00
memory.c
mempolicy.c	tmpfs: fix shared mempolicy leak	2012-12-06 11:56:43 -08:00
mempool.c
migrate.c
mincore.c
mlock.c
mm_init.c
mmap.c
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c
page_alloc.c	mm: avoid waking kswapd for THP allocations when compaction is deferred or contended	2012-11-30 08:51:18 -08:00
page_cgroup.c
page_io.c
page_isolation.c
page-writeback.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c	tmpfs: fix shared mempolicy leak	2012-12-06 11:56:43 -08:00
slab_common.c
slab.c
slab.h
slob.c
slub.c
sparse-vmemmap.c
sparse.c	mm/vmemmap: fix wrong use of virt_to_page	2012-11-30 08:51:17 -08:00
swap_state.c
swap.c
swapfile.c
truncate.c
util.c
vmalloc.c
vmscan.c	mm: vmscan: do not keep kswapd looping forever due to individual uncompactable zones	2012-12-06 11:29:57 -08:00
vmstat.c