Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934238Ab3CUQgS (ORCPT ); Thu, 21 Mar 2013 12:36:18 -0400 Received: from mail-pb0-f52.google.com ([209.85.160.52]:34343 "EHLO mail-pb0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933869Ab3CUQgM (ORCPT ); Thu, 21 Mar 2013 12:36:12 -0400 From: Kent Overstreet To: linux-kernel@vger.kernel.org, linux-aio@kvack.org, akpm@linux-foundation.org Cc: Kent Overstreet , Felipe Balbi , Greg Kroah-Hartman , Mark Fasheh , Joel Becker , Rusty Russell , Jens Axboe , Asai Thambi S P , Selvan Mani , Sam Bradshaw , Jeff Moyer , Al Viro , Benjamin LaHaise , "Theodore Ts'o" Subject: [PATCH 06/33] aio: kill return value of aio_complete() Date: Thu, 21 Mar 2013 09:35:27 -0700 Message-Id: <1363883754-27966-7-git-send-email-koverstreet@google.com> X-Mailer: git-send-email 1.8.1.3 In-Reply-To: <1363883754-27966-1-git-send-email-koverstreet@google.com> References: <1363883754-27966-1-git-send-email-koverstreet@google.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5123 Lines: 150 Nothing used the return value, and it probably wasn't possible to use it safely for the locked versions (aio_complete(), aio_put_req()). Just kill it. Signed-off-by: Kent Overstreet Acked-by: Zach Brown Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: Mark Fasheh Cc: Joel Becker Cc: Rusty Russell Cc: Jens Axboe Cc: Asai Thambi S P Cc: Selvan Mani Cc: Sam Bradshaw Cc: Jeff Moyer Cc: Al Viro Cc: Benjamin LaHaise Cc: Theodore Ts'o Signed-off-by: Andrew Morton --- fs/aio.c | 21 +++++++-------------- include/linux/aio.h | 8 ++++---- 2 files changed, 11 insertions(+), 18 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index f9a7e6a..6b29e41a 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -531,7 +531,7 @@ static inline void really_put_req(struct kioctx *ctx, struct kiocb *req) /* __aio_put_req * Returns true if this put was the last user of the request. */ -static int __aio_put_req(struct kioctx *ctx, struct kiocb *req) +static void __aio_put_req(struct kioctx *ctx, struct kiocb *req) { dprintk(KERN_DEBUG "aio_put(%p): f_count=%ld\n", req, atomic_long_read(&req->ki_filp->f_count)); @@ -541,7 +541,7 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req) req->ki_users--; BUG_ON(req->ki_users < 0); if (likely(req->ki_users)) - return 0; + return; list_del(&req->ki_list); /* remove from active_reqs */ req->ki_cancel = NULL; req->ki_retry = NULL; @@ -549,21 +549,18 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req) fput(req->ki_filp); req->ki_filp = NULL; really_put_req(ctx, req); - return 1; } /* aio_put_req * Returns true if this put was the last user of the kiocb, * false if the request is still in use. */ -int aio_put_req(struct kiocb *req) +void aio_put_req(struct kiocb *req) { struct kioctx *ctx = req->ki_ctx; - int ret; spin_lock_irq(&ctx->ctx_lock); - ret = __aio_put_req(ctx, req); + __aio_put_req(ctx, req); spin_unlock_irq(&ctx->ctx_lock); - return ret; } EXPORT_SYMBOL(aio_put_req); @@ -593,10 +590,8 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id) /* aio_complete * Called when the io request on the given iocb is complete. - * Returns true if this is the last user of the request. The - * only other user of the request can be the cancellation code. */ -int aio_complete(struct kiocb *iocb, long res, long res2) +void aio_complete(struct kiocb *iocb, long res, long res2) { struct kioctx *ctx = iocb->ki_ctx; struct aio_ring_info *info; @@ -604,7 +599,6 @@ int aio_complete(struct kiocb *iocb, long res, long res2) struct io_event *event; unsigned long flags; unsigned long tail; - int ret; /* * Special case handling for sync iocbs: @@ -618,7 +612,7 @@ int aio_complete(struct kiocb *iocb, long res, long res2) iocb->ki_user_data = res; iocb->ki_users = 0; wake_up_process(iocb->ki_obj.tsk); - return 1; + return; } info = &ctx->ring_info; @@ -677,7 +671,7 @@ int aio_complete(struct kiocb *iocb, long res, long res2) put_rq: /* everything turned out well, dispose of the aiocb. */ - ret = __aio_put_req(ctx, iocb); + __aio_put_req(ctx, iocb); /* * We have to order our ring_info tail store above and test @@ -691,7 +685,6 @@ put_rq: wake_up(&ctx->wait); spin_unlock_irqrestore(&ctx->ctx_lock, flags); - return ret; } EXPORT_SYMBOL(aio_complete); diff --git a/include/linux/aio.h b/include/linux/aio.h index 019204e..615d55a 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -167,16 +167,16 @@ struct kioctx { /* prototypes */ #ifdef CONFIG_AIO extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb); -extern int aio_put_req(struct kiocb *iocb); -extern int aio_complete(struct kiocb *iocb, long res, long res2); +extern void aio_put_req(struct kiocb *iocb); +extern void aio_complete(struct kiocb *iocb, long res, long res2); struct mm_struct; extern void exit_aio(struct mm_struct *mm); extern long do_io_submit(aio_context_t ctx_id, long nr, struct iocb __user *__user *iocbpp, bool compat); #else static inline ssize_t wait_on_sync_kiocb(struct kiocb *iocb) { return 0; } -static inline int aio_put_req(struct kiocb *iocb) { return 0; } -static inline int aio_complete(struct kiocb *iocb, long res, long res2) { return 0; } +static inline void aio_put_req(struct kiocb *iocb) { } +static inline void aio_complete(struct kiocb *iocb, long res, long res2) { } struct mm_struct; static inline void exit_aio(struct mm_struct *mm) { } static inline long do_io_submit(aio_context_t ctx_id, long nr, -- 1.8.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/