From: Wendy Cheng <[email protected]>
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]>
aio.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -purN --exclude=description 00_linus-git/fs/aio.c 01_aio_enosys/fs/aio.c
--- 00_linus-git/fs/aio.c 2005-09-07 10:59:31.000000000 -0400
+++ 01_aio_enosys/fs/aio.c 2005-09-07 11:03:55.000000000 -0400
@@ -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;
put_ioctx(ctx);
-
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