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authorLinus Torvalds <torvalds@linux-foundation.org>2016-04-29 21:21:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-04-29 21:21:22 +0300
commit1d003af2effbf10ef7b08736606dd306a29b3396 (patch)
tree1801e223f1ed61788df63be5f11702afdea457e5 /fs
parent92c19ea9535707701861b7533253a516c7d115c9 (diff)
parent7c88a292dfcd6979e839493ef18d04770eb3bad0 (diff)
downloadlinux-1d003af2effbf10ef7b08736606dd306a29b3396.tar.xz
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton: "20 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: Documentation/sysctl/vm.txt: update numa_zonelist_order description lib/stackdepot.c: allow the stack trace hash to be zero rapidio: fix potential NULL pointer dereference mm/memory-failure: fix race with compound page split/merge ocfs2/dlm: return zero if deref_done message is successfully handled Ananth has moved kcov: don't profile branches in kcov kcov: don't trace the code coverage code mm: wake kcompactd before kswapd's short sleep .mailmap: add Frank Rowand mm/hwpoison: fix wrong num_poisoned_pages accounting mm: call swap_slot_free_notify() with page lock held mm: vmscan: reclaim highmem zone if buffer_heads is over limit numa: fix /proc/<pid>/numa_maps for THP mm/huge_memory: replace VM_NO_THP VM_BUG_ON with actual VMA check mailmap: fix Krzysztof Kozlowski's misspelled name thp: keep huge zero page pinned until tlb flush mm: exclude HugeTLB pages from THP page_mapped() logic kexec: export OFFSET(page.compound_head) to find out compound tail page kexec: update VMCOREINFO for compound_order/dtor
Diffstat (limited to 'fs')
-rw-r--r--fs/ocfs2/dlm/dlmmaster.c2
-rw-r--r--fs/proc/task_mmu.c33
2 files changed, 32 insertions, 3 deletions
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 9aed6e202201..13719d3f35f8 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -2455,6 +2455,8 @@ int dlm_deref_lockres_done_handler(struct o2net_msg *msg, u32 len, void *data,
spin_unlock(&dlm->spinlock);
+ ret = 0;
+
done:
dlm_put(dlm);
return ret;
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 229cb546bee0..541583510cfb 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1518,6 +1518,32 @@ static struct page *can_gather_numa_stats(pte_t pte, struct vm_area_struct *vma,
return page;
}
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+static struct page *can_gather_numa_stats_pmd(pmd_t pmd,
+ struct vm_area_struct *vma,
+ unsigned long addr)
+{
+ struct page *page;
+ int nid;
+
+ if (!pmd_present(pmd))
+ return NULL;
+
+ page = vm_normal_page_pmd(vma, addr, pmd);
+ if (!page)
+ return NULL;
+
+ if (PageReserved(page))
+ return NULL;
+
+ nid = page_to_nid(page);
+ if (!node_isset(nid, node_states[N_MEMORY]))
+ return NULL;
+
+ return page;
+}
+#endif
+
static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
@@ -1527,14 +1553,14 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
pte_t *orig_pte;
pte_t *pte;
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
ptl = pmd_trans_huge_lock(pmd, vma);
if (ptl) {
- pte_t huge_pte = *(pte_t *)pmd;
struct page *page;
- page = can_gather_numa_stats(huge_pte, vma, addr);
+ page = can_gather_numa_stats_pmd(*pmd, vma, addr);
if (page)
- gather_stats(page, md, pte_dirty(huge_pte),
+ gather_stats(page, md, pmd_dirty(*pmd),
HPAGE_PMD_SIZE/PAGE_SIZE);
spin_unlock(ptl);
return 0;
@@ -1542,6 +1568,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr,
if (pmd_trans_unstable(pmd))
return 0;
+#endif
orig_pte = pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
do {
struct page *page = can_gather_numa_stats(*pte, vma, addr);