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-rw-r--r--fs/aio.c52
1 files changed, 26 insertions, 26 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 044c1c86decc..79b7e692f5b3 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -730,39 +730,39 @@ err:
static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx,
struct completion *requests_done)
{
- if (!atomic_xchg(&ctx->dead, 1)) {
- struct kioctx_table *table;
+ struct kioctx_table *table;
- spin_lock(&mm->ioctx_lock);
- rcu_read_lock();
- table = rcu_dereference(mm->ioctx_table);
+ if (atomic_xchg(&ctx->dead, 1))
+ return -EINVAL;
- WARN_ON(ctx != table->table[ctx->id]);
- table->table[ctx->id] = NULL;
- rcu_read_unlock();
- spin_unlock(&mm->ioctx_lock);
- /* percpu_ref_kill() will do the necessary call_rcu() */
- wake_up_all(&ctx->wait);
+ spin_lock(&mm->ioctx_lock);
+ rcu_read_lock();
+ table = rcu_dereference(mm->ioctx_table);
+
+ WARN_ON(ctx != table->table[ctx->id]);
+ table->table[ctx->id] = NULL;
+ rcu_read_unlock();
+ spin_unlock(&mm->ioctx_lock);
- /*
- * It'd be more correct to do this in free_ioctx(), after all
- * the outstanding kiocbs have finished - but by then io_destroy
- * has already returned, so io_setup() could potentially return
- * -EAGAIN with no ioctxs actually in use (as far as userspace
- * could tell).
- */
- aio_nr_sub(ctx->max_reqs);
+ /* percpu_ref_kill() will do the necessary call_rcu() */
+ wake_up_all(&ctx->wait);
- if (ctx->mmap_size)
- vm_munmap(ctx->mmap_base, ctx->mmap_size);
+ /*
+ * It'd be more correct to do this in free_ioctx(), after all
+ * the outstanding kiocbs have finished - but by then io_destroy
+ * has already returned, so io_setup() could potentially return
+ * -EAGAIN with no ioctxs actually in use (as far as userspace
+ * could tell).
+ */
+ aio_nr_sub(ctx->max_reqs);
- ctx->requests_done = requests_done;
- percpu_ref_kill(&ctx->users);
- return 0;
- }
+ if (ctx->mmap_size)
+ vm_munmap(ctx->mmap_base, ctx->mmap_size);
- return -EINVAL;
+ ctx->requests_done = requests_done;
+ percpu_ref_kill(&ctx->users);
+ return 0;
}
/* wait_on_sync_kiocb: