diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/aio.c | 57 |
1 files changed, 24 insertions, 33 deletions
@@ -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, @@ -191,7 +185,7 @@ 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); @@ -265,7 +259,7 @@ 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); } @@ -354,7 +348,7 @@ 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; @@ -363,7 +357,7 @@ 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); } @@ -611,8 +605,8 @@ 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); @@ -722,9 +716,9 @@ 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 @@ -780,9 +774,7 @@ 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; @@ -802,9 +794,8 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent) spin_unlock(&info->ring_lock); out: - dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, - (unsigned long)ring->head, (unsigned long)ring->tail); kunmap_atomic(ring); + pr_debug("%d h%u t%u\n", ret, ring->head, ring->tail); return ret; } @@ -867,13 +858,13 @@ 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; @@ -936,7 +927,7 @@ 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; } @@ -967,7 +958,7 @@ 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 */ @@ -1264,7 +1255,7 @@ 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; } @@ -1284,7 +1275,7 @@ 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; } @@ -1325,7 +1316,7 @@ 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; } @@ -1407,7 +1398,7 @@ 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; } |