Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelv...

[safe/jmp/linux-2.6] / include / linux / aio.h

diff --git a/include/linux/aio.h b/include/linux/aio.h
index 8a01933..7a8db41 100644 (file)
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -4,6 +4,8 @@
 #include <linux/list.h>
 #include <linux/workqueue.h>
 #include <linux/aio_abi.h>
+#include <linux/uio.h>
+#include <linux/rcupdate.h>
 
 #include <asm/atomic.h>
 
@@ -84,7 +86,7 @@ struct kioctx;
  */
 struct kiocb {
        struct list_head        ki_run_list;
-       long                    ki_flags;
+       unsigned long           ki_flags;
        int                     ki_users;
        unsigned                ki_key;         /* id of this request */
 
@@ -100,7 +102,6 @@ struct kiocb {
        } ki_obj;
 
        __u64                   ki_user_data;   /* user's data for completion */
-       wait_queue_t            ki_wait;
        loff_t                  ki_pos;
 
        void                    *private;
@@ -109,12 +110,19 @@ struct kiocb {
        size_t                  ki_nbytes;      /* copy of iocb->aio_nbytes */
        char                    __user *ki_buf; /* remaining iocb->aio_buf */
        size_t                  ki_left;        /* remaining bytes */
-       long                    ki_retried;     /* just for testing */
-       long                    ki_kicked;      /* just for testing */
-       long                    ki_queued;      /* just for testing */
+       struct iovec            ki_inline_vec;  /* inline vector */
+       struct iovec            *ki_iovec;
+       unsigned long           ki_nr_segs;
+       unsigned long           ki_cur_seg;
 
        struct list_head        ki_list;        /* the aio core uses this
                                                 * for cancellation */
+
+       /*
+        * If the aio_resfd field of the userspace iocb is not zero,
+        * this is the underlying eventfd context to deliver events to.
+        */
+       struct eventfd_ctx      *ki_eventfd;
 };
 
 #define is_sync_kiocb(iocb)    ((iocb)->ki_key == KIOCB_SYNC_KEY)
@@ -131,7 +139,6 @@ struct kiocb {
                (x)->ki_dtor = NULL;                    \
                (x)->ki_obj.tsk = tsk;                  \
                (x)->ki_user_data = 0;                  \
-               init_wait((&(x)->ki_wait));             \
        } while (0)
 
 #define AIO_RING_MAGIC                 0xa10a10a1
@@ -175,7 +182,7 @@ struct kioctx {
 
        /* This needs improving */
        unsigned long           user_id;
-       struct kioctx           *next;
+       struct hlist_node       list;
 
        wait_queue_head_t       wait;
 
@@ -190,53 +197,34 @@ struct kioctx {
 
        struct aio_ring_info    ring_info;
 
-       struct work_struct      wq;
+       struct delayed_work     wq;
+
+       struct rcu_head         rcu_head;
 };
 
 /* prototypes */
 extern unsigned aio_max_size;
 
-extern ssize_t FASTCALL(wait_on_sync_kiocb(struct kiocb *iocb));
-extern int FASTCALL(aio_put_req(struct kiocb *iocb));
-extern void FASTCALL(kick_iocb(struct kiocb *iocb));
-extern int FASTCALL(aio_complete(struct kiocb *iocb, long res, long res2));
-extern void FASTCALL(__put_ioctx(struct kioctx *ctx));
+#ifdef CONFIG_AIO
+extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
+extern int aio_put_req(struct kiocb *iocb);
+extern void kick_iocb(struct kiocb *iocb);
+extern int aio_complete(struct kiocb *iocb, long res, long res2);
 struct mm_struct;
-extern void FASTCALL(exit_aio(struct mm_struct *mm));
-extern struct kioctx *lookup_ioctx(unsigned long ctx_id);
-extern int FASTCALL(io_submit_one(struct kioctx *ctx,
-                       struct iocb __user *user_iocb, struct iocb *iocb));
-
-/* semi private, but used by the 32bit emulations: */
-struct kioctx *lookup_ioctx(unsigned long ctx_id);
-int FASTCALL(io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
-                                 struct iocb *iocb));
-
-#define get_ioctx(kioctx) do {                                         \
-       BUG_ON(atomic_read(&(kioctx)->users) <= 0);                     \
-       atomic_inc(&(kioctx)->users);                                   \
-} while (0)
-#define put_ioctx(kioctx) do {                                         \
-       BUG_ON(atomic_read(&(kioctx)->users) <= 0);                     \
-       if (unlikely(atomic_dec_and_test(&(kioctx)->users)))            \
-               __put_ioctx(kioctx);                                    \
-} while (0)
-
-#define in_aio() !is_sync_wait(current->io_wait)
-/* may be used for debugging */
-#define warn_if_async()                                                        \
-do {                                                                   \
-       if (in_aio()) {                                                 \
-               printk(KERN_ERR "%s(%s:%d) called in async context!\n", \
-                       __FUNCTION__, __FILE__, __LINE__);              \
-               dump_stack();                                           \
-       }                                                               \
-} while (0)
-
-#define io_wait_to_kiocb(wait) container_of(wait, struct kiocb, ki_wait)
-#define is_retried_kiocb(iocb) ((iocb)->ki_retried > 1)
-
-#include <linux/aio_abi.h>
+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 kick_iocb(struct kiocb *iocb) { }
+static inline int aio_complete(struct kiocb *iocb, long res, long res2) { return 0; }
+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,
+                               struct iocb __user * __user *iocbpp,
+                               bool compat) { return 0; }
+#endif /* CONFIG_AIO */
 
 static inline struct kiocb *list_kiocb(struct list_head *h)
 {