tree a50d0a3e3b1f7593557fa06379ac4b284717e87c
parent 6f519165a97924ab3eeb99f388718d12ff97f1f4
author Wendy Cheng <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:02:08 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 10 Sep 2005 03:57:32 -0700

[PATCH] change io_cancel return code for no cancel case

Note that other than few exceptions, most of the current filesystem and/or
drivers do not have aio cancel specifically defined (kiob->ki_cancel field
is mostly NULL).  However, sys_io_cancel system call universally sets
return code to -EAGAIN.  This gives applications a wrong impression that
this call is implemented but just never works.  We have customer inquires
about this issue.

Changed by Benjamin LaHaise to EINVAL instead of ENOSYS

Signed-off-by: S. Wendy Cheng <[EMAIL PROTECTED]>
Acked-by: Benjamin LaHaise <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>

 fs/aio.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/aio.c b/fs/aio.c
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1673,7 +1673,7 @@ asmlinkage long sys_io_cancel(aio_contex
                                ret = -EFAULT;
        } else
-               printk(KERN_DEBUG "iocb has no cancel operation\n");
+               ret = -EINVAL;
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