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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>
This commit is contained in:
Satoru Takeuchi 2010-08-05 11:23:11 -07:00 committed by Linus Torvalds
parent cdd854bc42
commit 642b5123ac
1 changed files with 11 additions and 10 deletions
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21
fs/aio.c
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@ -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,