aio: fix wrong subsystem comments

 - sys_io_destroy(): acutually return -EINVAL if the context pointed to
   is invalidIndex: linux-2.6.33-rc4/fs/aio.c
 - sys_io_getevents(): An argument specifying timeout is not `when',
   but `timeout'.
 - sys_io_getevents(): Should describe what is returned if this syscall
   succeeds.

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 10 deletions

diff --git a/fs/aio.c b/fs/aio.c
index 1ccf25cef1f0..3006b5bc33d6 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1277,7 +1277,7 @@ out:
 /* sys_io_destroy:
  *      Destroy the aio_context specified.  May cancel any outstanding 
  *      AIOs and block on completion.  Will fail with -ENOSYS if not
- *      implemented.  May fail with -EFAULT if the context pointed to
+ *      implemented.  May fail with -EINVAL if the context pointed to
  *      is invalid.
  */
 SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx)
@@ -1795,15 +1795,16 @@ SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb,
 
 /* io_getevents:
  *      Attempts to read at least min_nr events and up to nr events from
- *      the completion queue for the aio_context specified by ctx_id.  May
- *      fail with -EINVAL if ctx_id is invalid, if min_nr is out of range,
- *      if nr is out of range, if when is out of range.  May fail with
- *      -EFAULT if any of the memory specified to is invalid.  May return
- *      0 or < min_nr if no events are available and the timeout specified
- *      by when has elapsed, where when == NULL specifies an infinite
- *      timeout.  Note that the timeout pointed to by when is relative and
- *      will be updated if not NULL and the operation blocks.  Will fail
- *      with -ENOSYS if not implemented.
+ *      the completion queue for the aio_context specified by ctx_id. If
+ *      it succeeds, the number of read events is returned. May fail with
+ *      -EINVAL if ctx_id is invalid, if min_nr is out of range, if nr is
+ *      out of range, if timeout is out of range.  May fail with -EFAULT
+ *      if any of the memory specified is invalid.  May return 0 or
+ *      < min_nr if the timeout specified by timeout has elapsed
+ *      before sufficient events are available, where timeout == NULL
+ *      specifies an infinite timeout. Note that the timeout pointed to by
+ *      timeout is relative and will be updated if not NULL and the
+ *      operation blocks. Will fail with -ENOSYS if not implemented.
  */
 SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id,
                 long, min_nr,