Signed-off-by: Kent Overstreet <koverstreet@xxxxxxxxxx>
---
fs/aio.c | 57 ++++++++++++++++++++++++---------------------------------
1 file changed, 24 insertions(+), 33 deletions(-)
diff --git a/fs/aio.c b/fs/aio.c
index 4dcc02f..0ed14e8 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -8,6 +8,8 @@
*
* See ../COPYING for licensing terms.
*/
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
@@ -18,8 +20,6 @@
#include <linux/backing-dev.h>
#include <linux/uio.h>
-#define DEBUG 0
-
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/file.h>
@@ -39,12 +39,6 @@
#include <asm/kmap_types.h>
#include <asm/uaccess.h>
-#if DEBUG > 1
-#define dprintk printk
-#else
-#define dprintk(x...) do { ; } while (0)
-#endif
-
#define AIO_RING_MAGIC 0xa10a10a1
#define AIO_RING_COMPAT_FEATURES 1
#define AIO_RING_INCOMPAT_FEATURES 0
@@ -124,7 +118,7 @@ static int __init aio_setup(void)
kiocb_cachep = KMEM_CACHE(kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
- pr_debug("aio_setup: sizeof(struct page) = %d\n", (int)sizeof(struct page));
+ pr_debug("sizeof(struct page) = %zu\n", sizeof(struct page));
return 0;
}
@@ -178,7 +172,7 @@ static int aio_setup_ring(struct kioctx *ctx)
}
info->mmap_size = nr_pages * PAGE_SIZE;
- dprintk("attempting mmap of %lu bytes\n", info->mmap_size);
+ pr_debug("attempting mmap of %lu bytes\n", info->mmap_size);
down_write(&mm->mmap_sem);
info->mmap_base = do_mmap_pgoff(NULL, 0, info->mmap_size,
PROT_READ|PROT_WRITE,
@@ -190,7 +184,7 @@ static int aio_setup_ring(struct kioctx *ctx)
return -EAGAIN;
}
- dprintk("mmap address: 0x%08lx\n", info->mmap_base);
+ pr_debug("mmap address: 0x%08lx\n", info->mmap_base);
info->nr_pages = get_user_pages(current, mm, info->mmap_base, nr_pages,
1, 0, info->ring_pages, NULL);
up_write(&mm->mmap_sem);
@@ -262,7 +256,7 @@ static void __put_ioctx(struct kioctx *ctx)
aio_nr -= nr_events;
spin_unlock(&aio_nr_lock);
}
- pr_debug("__put_ioctx: freeing %p\n", ctx);
+ pr_debug("freeing %p\n", ctx);
call_rcu(&ctx->rcu_head, ctx_rcu_free);
}
@@ -351,7 +345,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events)
hlist_add_head_rcu(&ctx->list, &mm->ioctx_list);
spin_unlock(&mm->ioctx_lock);
- dprintk("aio: allocated ioctx %p[%ld]: mm=%p mask=0x%x\n",
+ pr_debug("allocated ioctx %p[%ld]: mm=%p mask=0x%x\n",
ctx, ctx->user_id, mm, ctx->ring_info.nr);
return ctx;
@@ -360,7 +354,7 @@ out_cleanup:
aio_free_ring(ctx);
out_freectx:
kmem_cache_free(kioctx_cachep, ctx);
- dprintk("aio: error allocating ioctx %d\n", err);
+ pr_debug("error allocating ioctx %d\n", err);
return ERR_PTR(err);
}
@@ -607,8 +601,8 @@ static inline void really_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));
+ pr_debug("(%p): f_count=%ld\n",
+ req, atomic_long_read(&req->ki_filp->f_count));
assert_spin_locked(&ctx->ctx_lock);
@@ -721,9 +715,9 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
event->res = res;
event->res2 = res2;
- dprintk("aio_complete: %p[%lu]: %p: %p %Lx %lx %lx\n",
- ctx, tail, iocb, iocb->ki_obj.user, iocb->ki_user_data,
- res, res2);
+ pr_debug("%p[%lu]: %p: %p %Lx %lx %lx\n",
+ ctx, tail, iocb, iocb->ki_obj.user, iocb->ki_user_data,
+ res, res2);
/* after flagging the request as done, we
* must never even look at it again
@@ -779,9 +773,7 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent)
int ret = 0;
ring = kmap_atomic(info->ring_pages[0]);
- dprintk("in aio_read_evt h%lu t%lu m%lu\n",
- (unsigned long)ring->head, (unsigned long)ring->tail,
- (unsigned long)ring->nr);
+ pr_debug("h%u t%u m%u\n", ring->head, ring->tail, ring->nr);
if (ring->head == ring->tail)
goto out;
@@ -802,8 +794,7 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent)
out:
kunmap_atomic(ring);
- dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret,
- (unsigned long)ring->head, (unsigned long)ring->tail);
+ pr_debug("%d h%u t%u\n", ret, ring->head, ring->tail);
return ret;
}
@@ -866,13 +857,13 @@ static int read_events(struct kioctx *ctx,
if (unlikely(ret <= 0))
break;
- dprintk("read event: %Lx %Lx %Lx %Lx\n",
- ent.data, ent.obj, ent.res, ent.res2);
+ pr_debug("%Lx %Lx %Lx %Lx\n",
+ ent.data, ent.obj, ent.res, ent.res2);
/* Could we split the check in two? */
ret = -EFAULT;
if (unlikely(copy_to_user(event, &ent, sizeof(ent)))) {
- dprintk("aio: lost an event due to EFAULT.\n");
+ pr_debug("lost an event due to EFAULT.\n");
break;
}
ret = 0;
@@ -935,7 +926,7 @@ static int read_events(struct kioctx *ctx,
ret = -EFAULT;
if (unlikely(copy_to_user(event, &ent, sizeof(ent)))) {
- dprintk("aio: lost an event due to EFAULT.\n");
+ pr_debug("lost an event due to EFAULT.\n");
break;
}
@@ -966,7 +957,7 @@ static void io_destroy(struct kioctx *ioctx)
hlist_del_rcu(&ioctx->list);
spin_unlock(&mm->ioctx_lock);
- dprintk("aio_release(%p)\n", ioctx);
+ pr_debug("(%p)\n", ioctx);
if (likely(!was_dead))
put_ioctx(ioctx); /* twice for the list */
@@ -1259,7 +1250,7 @@ static ssize_t aio_setup_iocb(struct kiocb *kiocb, bool compat)
kiocb->ki_retry = aio_fsync;
break;
default:
- dprintk("EINVAL: io_submit: no operation provided\n");
+ pr_debug("EINVAL: no operation provided\n");
ret = -EINVAL;
}
@@ -1279,7 +1270,7 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
/* enforce forwards compatibility on users */
if (unlikely(iocb->aio_reserved1 || iocb->aio_reserved2)) {
- pr_debug("EINVAL: io_submit: reserve field set\n");
+ pr_debug("EINVAL: reserve field set\n");
return -EINVAL;
}
@@ -1320,7 +1311,7 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
ret = put_user(req->ki_key, &user_iocb->aio_key);
if (unlikely(ret)) {
- dprintk("EFAULT: aio_key\n");
+ pr_debug("EFAULT: aio_key\n");
goto out_put_req;
}
@@ -1401,7 +1392,7 @@ long do_io_submit(aio_context_t ctx_id, long nr,
ctx = lookup_ioctx(ctx_id);
if (unlikely(!ctx)) {
- pr_debug("EINVAL: io_submit: invalid context id\n");
+ pr_debug("EINVAL: invalid context id\n");
return -EINVAL;
}
--
1.7.12
--
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