[PATCH] aio: remove ki_retried debugging member

Remove the ki_retried member from struct kiocb.  I think the idea was
bounced around a while back, but Arnaldo pointed out another reason that we
should dig it up when he pointed out that the last cacheline of struct
kiocb only contains 4 bytes.  By removing the debugging member, we save
more than the 8 byte on 64 bit machines.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Acked-by: Ken Chen <kenneth.w.chen@intel.com>
Acked-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 15 deletions

diff --git a/fs/aio.c b/fs/aio.c
index f02ad2677fc5..d3a6ec2c9627 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -666,17 +666,6 @@ static ssize_t aio_run_iocb(struct kiocb *iocb)
         ssize_t (*retry)(struct kiocb *);
         ssize_t ret;
 
-        if (iocb->ki_retried++ > 1024*1024) {
-                printk("Maximal retry count.  Bytes done %Zd\n",
-                        iocb->ki_nbytes - iocb->ki_left);
-                return -EAGAIN;
-        }
-
-        if (!(iocb->ki_retried & 0xff)) {
-                pr_debug("%ld retry: %zd of %zd\n", iocb->ki_retried,
-                        iocb->ki_nbytes - iocb->ki_left, iocb->ki_nbytes);
-        }
-
         if (!(retry = iocb->ki_retry)) {
                 printk("aio_run_iocb: iocb->ki_retry = NULL\n");
                 return 0;
@@ -1005,9 +994,6 @@ int fastcall aio_complete(struct kiocb *iocb, long res, long res2)
         kunmap_atomic(ring, KM_IRQ1);
 
         pr_debug("added to ring %p at [%lu]\n", iocb, tail);
-
-        pr_debug("%ld retries: %zd of %zd\n", iocb->ki_retried,
-                iocb->ki_nbytes - iocb->ki_left, iocb->ki_nbytes);
 put_rq:
         /* everything turned out well, dispose of the aiocb. */
         ret = __aio_put_req(ctx, iocb);
@@ -1590,7 +1576,6 @@ int fastcall io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
         req->ki_opcode = iocb->aio_lio_opcode;
         init_waitqueue_func_entry(&req->ki_wait, aio_wake_function);
         INIT_LIST_HEAD(&req->ki_wait.task_list);
-        req->ki_retried = 0;
 
         ret = aio_setup_iocb(req);