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authorTony Lindgren <tony@atomide.com>2012-11-13 13:25:38 -0800
committerTony Lindgren <tony@atomide.com>2012-11-13 13:25:38 -0800
commit89ab216b33ba9405880fd3d89531305a931bc70f (patch)
tree8f6428ce51ecaed6f6e1379c036dbe341eb71e34 /mm/mmu_notifier.c
parentc9d501e5cb0238910337213e12a09127221c35d8 (diff)
parent46bf4a562207c5ebd24e1dde5e5ee326cd3d6b91 (diff)
downloadolio-linux-3.10-89ab216b33ba9405880fd3d89531305a931bc70f.tar.xz
olio-linux-3.10-89ab216b33ba9405880fd3d89531305a931bc70f.zip
Merge branch 'omap-for-v3.8/pm' into omap-for-v3.8/clock
Diffstat (limited to 'mm/mmu_notifier.c')
-rw-r--r--mm/mmu_notifier.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index 479a1e751a7..8a5ac8c686b 100644
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -196,28 +196,28 @@ static int do_mmu_notifier_register(struct mmu_notifier *mn,
BUG_ON(atomic_read(&mm->mm_users) <= 0);
/*
- * Verify that mmu_notifier_init() already run and the global srcu is
- * initialized.
- */
+ * Verify that mmu_notifier_init() already run and the global srcu is
+ * initialized.
+ */
BUG_ON(!srcu.per_cpu_ref);
+ ret = -ENOMEM;
+ mmu_notifier_mm = kmalloc(sizeof(struct mmu_notifier_mm), GFP_KERNEL);
+ if (unlikely(!mmu_notifier_mm))
+ goto out;
+
if (take_mmap_sem)
down_write(&mm->mmap_sem);
ret = mm_take_all_locks(mm);
if (unlikely(ret))
- goto out;
+ goto out_clean;
if (!mm_has_notifiers(mm)) {
- mmu_notifier_mm = kmalloc(sizeof(struct mmu_notifier_mm),
- GFP_KERNEL);
- if (unlikely(!mmu_notifier_mm)) {
- ret = -ENOMEM;
- goto out_of_mem;
- }
INIT_HLIST_HEAD(&mmu_notifier_mm->list);
spin_lock_init(&mmu_notifier_mm->lock);
mm->mmu_notifier_mm = mmu_notifier_mm;
+ mmu_notifier_mm = NULL;
}
atomic_inc(&mm->mm_count);
@@ -233,12 +233,12 @@ static int do_mmu_notifier_register(struct mmu_notifier *mn,
hlist_add_head(&mn->hlist, &mm->mmu_notifier_mm->list);
spin_unlock(&mm->mmu_notifier_mm->lock);
-out_of_mem:
mm_drop_all_locks(mm);
-out:
+out_clean:
if (take_mmap_sem)
up_write(&mm->mmap_sem);
-
+ kfree(mmu_notifier_mm);
+out:
BUG_ON(atomic_read(&mm->mm_users) <= 0);
return ret;
}