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| author |   Ingo Molnar <mingo@kernel.org> | 2017-04-23 11:12:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-04-23 11:12:44 +0200 |
| commit | 58d30c36d472b75e8e9962d6a640be19d9389128 (patch) | |
| tree | ce161b15e844d081f527f02a4f74ffd1171b2b14 /mm/mmu_notifier.c | |
| parent | Merge tag 'nfsd-4.11-2' of git://linux-nfs.org/~bfields/linux (diff) | |
| parent | Merge branches 'doc.2017.04.12a', 'fixes.2017.04.19a' and 'srcu.2017.04.21a' into HEAD (diff) | |
| download | linux-dev-58d30c36d472b75e8e9962d6a640be19d9389128.tar.xz linux-dev-58d30c36d472b75e8e9962d6a640be19d9389128.zip | |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
- Documentation updates.
- Miscellaneous fixes.
- Parallelize SRCU callback handling (plus overlapping patches).
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/mmu_notifier.c')
| -rw-r--r-- | mm/mmu_notifier.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c index a7652acd2ab9..54ca54562928 100644 --- a/mm/mmu_notifier.c +++ b/mm/mmu_notifier.c @@ -21,7 +21,7 @@ #include <linux/slab.h> /* global SRCU for all MMs */ -static struct srcu_struct srcu; +DEFINE_STATIC_SRCU(srcu); /* * This function allows mmu_notifier::release callback to delay a call to @@ -252,12 +252,6 @@ 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. - */ - BUG_ON(!srcu.per_cpu_ref); - ret = -ENOMEM; mmu_notifier_mm = kmalloc(sizeof(struct mmu_notifier_mm), GFP_KERNEL); if (unlikely(!mmu_notifier_mm)) @@ -406,9 +400,3 @@ void mmu_notifier_unregister_no_release(struct mmu_notifier *mn, mmdrop(mm); } EXPORT_SYMBOL_GPL(mmu_notifier_unregister_no_release); - -static int __init mmu_notifier_init(void) -{ - return init_srcu_struct(&srcu); -} -subsys_initcall(mmu_notifier_init); |