From: Kent Overstreet <koverstreet@google.com>
To: linux-bcache@vger.kernel.org, linux-kernel@vger.kernel.org,
dm-devel@redhat.com, tytso@mit.edu
Cc: Kent Overstreet <koverstreet@google.com>
Subject: [PATCH 1/5] aio: Kill return value of aio_complete()
Date: Mon, 8 Oct 2012 23:39:16 -0700 [thread overview]
Message-ID: <1349764760-21093-1-git-send-email-koverstreet@google.com> (raw)
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(-)
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,
--
1.7.10.4
next reply other threads:[~2012-10-09 6:39 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-09 6:39 Kent Overstreet [this message]
2012-10-09 6:39 ` [PATCH 2/5] aio: kiocb_cancel() Kent Overstreet
2012-10-09 18:26 ` Zach Brown
2012-10-09 21:37 ` Kent Overstreet
2012-10-10 11:03 ` Theodore Ts'o
2012-10-10 21:20 ` Zach Brown
2012-10-10 23:21 ` Theodore Ts'o
2012-10-11 2:41 ` Kent Overstreet
2012-10-09 6:39 ` [PATCH 3/5] aio: Rewrite refcounting Kent Overstreet
2012-10-09 18:27 ` Zach Brown
2012-10-09 22:21 ` Kent Overstreet
2012-10-09 22:35 ` Zach Brown
2012-10-10 0:17 ` Kent Overstreet
2012-10-09 6:39 ` [PATCH 4/5] aio: vmap ringbuffer Kent Overstreet
2012-10-09 18:29 ` Zach Brown
2012-10-09 21:31 ` Kent Overstreet
2012-10-09 22:32 ` Zach Brown
2012-10-09 22:44 ` Kent Overstreet
2012-10-09 22:58 ` Zach Brown
2012-10-10 0:16 ` Kent Overstreet
2012-10-10 0:36 ` Zach Brown
2012-10-10 1:09 ` Kent Overstreet
2012-10-09 6:39 ` [PATCH 5/5] aio: Refactor aio_read_evt, use cmxchg(), fix bug Kent Overstreet
2012-10-09 18:37 ` Zach Brown
2012-10-09 21:27 ` Kent Overstreet
2012-10-09 22:47 ` Zach Brown
2012-10-09 22:55 ` Kent Overstreet
2012-10-09 23:10 ` Zach Brown
2012-10-10 0:06 ` Kent Overstreet
2012-10-10 0:26 ` Zach Brown
2012-10-10 0:47 ` Kent Overstreet
2012-10-10 21:43 ` Zach Brown
2012-10-11 2:51 ` Kent Overstreet
2012-10-11 16:43 ` Zach Brown
2012-10-09 18:25 ` [PATCH 1/5] aio: Kill return value of aio_complete() Zach Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1349764760-21093-1-git-send-email-koverstreet@google.com \
--to=koverstreet@google.com \
--cc=dm-devel@redhat.com \
--cc=linux-bcache@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=tytso@mit.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).