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[1/5] aio: Kill return value of aio_complete()

Message ID 1349764760-21093-1-git-send-email-koverstreet@google.com (mailing list archive)
State Deferred, archived
Headers show

Commit Message

Kent Overstreet Oct. 9, 2012, 6:39 a.m. UTC 
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 <koverstreet@google.com>
---
 fs/aio.c            |   19 +++++++------------
 include/linux/aio.h |    8 ++++----
 2 files changed, 11 insertions(+), 16 deletions(-)

Comments

Zach Brown Oct. 9, 2012, 6:25 p.m. UTC | #1 
On Mon, Oct 08, 2012 at 11:39:16PM -0700, Kent Overstreet wrote:
> 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.

Nice, seems reasonable enough.  (Queue the timer for complaints from out
of tree code?)

Acked-by: Zach Brown <zab@redhat.com>

Though, in the future please cc: aio patches to the maintainers.  I'd
have missed this if I wasn't sifting through lkml:

$ ./scripts/get_maintainer.pl -f fs/aio.c
Benjamin LaHaise <bcrl@kvack.org> (supporter:AIO)
Alexander Viro <viro@zeniv.linux.org.uk> (maintainer:FILESYSTEMS (VFS...)
linux-aio@kvack.org (open list:AIO)
linux-fsdevel@vger.kernel.org (open list:FILESYSTEMS (VFS...)
linux-kernel@vger.kernel.org (open list)

- z

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
diff mbox

Patch

diff --git a/fs/aio.c b/fs/aio.c
index 71f613c..1ad2d97 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -548,7 +548,7 @@  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));
@@ -558,7 +558,7 @@  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;
@@ -566,21 +566,18 @@  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);
 
@@ -889,7 +886,7 @@  EXPORT_SYMBOL(kick_iocb);
  *	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;
@@ -897,7 +894,6 @@  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:
@@ -911,7 +907,7 @@  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;
@@ -973,7 +969,7 @@  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
@@ -987,7 +983,6 @@  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 31ff6db..4cde86d 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -211,18 +211,18 @@  extern unsigned aio_max_size;
 
 #ifdef CONFIG_AIO
 extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
-extern int aio_put_req(struct kiocb *iocb);
+extern void aio_put_req(struct kiocb *iocb);
 extern void kick_iocb(struct kiocb *iocb);
-extern int aio_complete(struct kiocb *iocb, long res, long res2);
+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 void aio_put_req(struct kiocb *iocb) { }
 static inline void kick_iocb(struct kiocb *iocb) { }
-static inline int aio_complete(struct kiocb *iocb, long res, long res2) { return 0; }
+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,