From 06af121eab543e5554f7a29538f171a382aaf855 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 20 Mar 2012 16:26:24 -0400 Subject: [PATCH] aio: merge aio_cancel_all() with wait_for_all_aios() Signed-off-by: Al Viro --- fs/aio.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index 4f71627264fd..fe37a94127e7 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -305,15 +305,18 @@ out_freectx: return ERR_PTR(err); } -/* aio_cancel_all +/* kill_ctx * Cancels all outstanding aio requests on an aio context. Used * when the processes owning a context have all exited to encourage * the rapid destruction of the kioctx. */ -static void aio_cancel_all(struct kioctx *ctx) +static void kill_ctx(struct kioctx *ctx) { int (*cancel)(struct kiocb *, struct io_event *); + struct task_struct *tsk = current; + DECLARE_WAITQUEUE(wait, tsk); struct io_event res; + spin_lock_irq(&ctx->ctx_lock); ctx->dead = 1; while (!list_empty(&ctx->active_reqs)) { @@ -329,15 +332,7 @@ static void aio_cancel_all(struct kioctx *ctx) spin_lock_irq(&ctx->ctx_lock); } } - spin_unlock_irq(&ctx->ctx_lock); -} -static void wait_for_all_aios(struct kioctx *ctx) -{ - struct task_struct *tsk = current; - DECLARE_WAITQUEUE(wait, tsk); - - spin_lock_irq(&ctx->ctx_lock); if (!ctx->reqs_active) goto out; @@ -387,9 +382,7 @@ void exit_aio(struct mm_struct *mm) ctx = hlist_entry(mm->ioctx_list.first, struct kioctx, list); hlist_del_rcu(&ctx->list); - aio_cancel_all(ctx); - - wait_for_all_aios(ctx); + kill_ctx(ctx); if (1 != atomic_read(&ctx->users)) printk(KERN_DEBUG @@ -1269,8 +1262,7 @@ static void io_destroy(struct kioctx *ioctx) if (likely(!was_dead)) put_ioctx(ioctx); /* twice for the list */ - aio_cancel_all(ioctx); - wait_for_all_aios(ioctx); + kill_ctx(ioctx); /* * Wake up any waiters. The setting of ctx->dead must be seen -- 2.30.2