proc: protect mm start_code/end_code in /proc/pid/stat

[firefly-linux-kernel-4.4.55.git] / fs / aio.c

diff --git a/fs/aio.c b/fs/aio.c
index 26869cde3953588ff2c0b0aa524966d5c02519d2..ebb6a22e4e1b36dfb530fba6406aaa42b5a9c14b 100644 (file)
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -85,7 +85,7 @@ static int __init aio_setup(void)
        kiocb_cachep = KMEM_CACHE(kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
        kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
 
-       aio_wq = create_workqueue("aio");
+       aio_wq = alloc_workqueue("aio", 0, 1);  /* used to limit concurrency */
        abe_pool = mempool_create_kmalloc_pool(1, sizeof(struct aio_batch_entry));
        BUG_ON(!aio_wq || !abe_pool);
 
@@ -520,7 +520,7 @@ static inline void really_put_req(struct kioctx *ctx, struct kiocb *req)
        ctx->reqs_active--;
 
        if (unlikely(!ctx->reqs_active && ctx->dead))
-               wake_up(&ctx->wait);
+               wake_up_all(&ctx->wait);
 }
 
 static void aio_fput_routine(struct work_struct *data)
@@ -577,7 +577,7 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
                spin_lock(&fput_lock);
                list_add(&req->ki_list, &fput_head);
                spin_unlock(&fput_lock);
-               queue_work(aio_wq, &fput_work);
+               schedule_work(&fput_work);
        } else {
                req->ki_filp = NULL;
                really_put_req(ctx, req);
@@ -1229,7 +1229,7 @@ static void io_destroy(struct kioctx *ioctx)
         * by other CPUs at this point.  Right now, we rely on the
         * locking done by the above calls to ensure this consistency.
         */
-       wake_up(&ioctx->wait);
+       wake_up_all(&ioctx->wait);
        put_ioctx(ioctx);       /* once for the lookup */
 }