Subject: + mm-hugetlb-improve-page-fault-scalability-fix.patch added to -mm tree
To: akpm@xxxxxxxxxxxxxxxxxxxx,aneesh.kumar@xxxxxxxxxxxxxxxxxx,david@xxxxxxxxxxxxxxxxxxxxx,davidlohr@xxxxxx,iamjoonsoo.kim@xxxxxxx,n-horiguchi@xxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 31 Jan 2014 13:08:45 -0800
The patch titled
Subject: mm-hugetlb-improve-page-fault-scalability-fix
has been added to the -mm tree. Its filename is
mm-hugetlb-improve-page-fault-scalability-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-improve-page-fault-scalability-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-improve-page-fault-scalability-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-hugetlb-improve-page-fault-scalability-fix
remove stray + characters, go BUG if hugetlb_init() kmalloc fails
Cc: Davidlohr Bueso <davidlohr@xxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
Cc: Davidlohr Bueso <davidlohr@xxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff -puN mm/hugetlb.c~mm-hugetlb-improve-page-fault-scalability-fix mm/hugetlb.c
--- a/mm/hugetlb.c~mm-hugetlb-improve-page-fault-scalability-fix
+++ a/mm/hugetlb.c
@@ -55,9 +55,9 @@ static unsigned long __initdata default_
DEFINE_SPINLOCK(hugetlb_lock);
/*
-+ * Serializes faults on the same logical page. This is used to
-+ * prevent spurious OOMs when the hugepage pool is fully utilized.
-+ */
+ * Serializes faults on the same logical page. This is used to
+ * prevent spurious OOMs when the hugepage pool is fully utilized.
+ */
static int num_fault_mutexes;
static struct mutex *htlb_fault_mutex_table ____cacheline_aligned_in_smp;
@@ -2008,8 +2008,7 @@ static int __init hugetlb_init(void)
#endif
htlb_fault_mutex_table =
kmalloc(sizeof(struct mutex) * num_fault_mutexes, GFP_KERNEL);
- if (!htlb_fault_mutex_table)
- return -ENOMEM;
+ BUG_ON(!htlb_fault_mutex_table);
for (i = 0; i < num_fault_mutexes; i++)
mutex_init(&htlb_fault_mutex_table[i]);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
i-need-old-gcc.patch
numa-mem-hotplug-initialize-numa_kernel_nodes-in-numa_clear_kernel_node_hotplug-fix.patch
input-route-kbd-leds-through-the-generic-leds-layer.patch
ocfs2-fix-ocfs2_sync_file-if-filesystem-is-readonly-fix.patch
ocfs2-free-allocated-clusters-if-error-occurs-after-ocfs2_claim_clusters-fix.patch
mm.patch
mm-hugetlb-improve-page-fault-scalability-fix.patch
mm-swap-fix-race-on-swap_info-reuse-between-swapoff-and-swapon.patch
kmod-run-usermodehelpers-only-on-cpus-allowed-for-kthreadd-v2-fix.patch
kmod-run-usermodehelpers-only-on-cpus-allowed-for-kthreadd-v2-checkpatch-fixes.patch
linux-next.patch
linux-next-git-rejects.patch
debugging-keep-track-of-page-owners.patch
journal_add_journal_head-debug.patch
kernel-forkc-export-kernel_thread-to-modules.patch
mutex-subsystem-synchro-test-module.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
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