* [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK
@ 2017-11-08 6:54 Mike Rapoport
[not found] ` <1510124048-7991-1-git-send-email-rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
0 siblings, 1 reply; 5+ messages in thread
From: Mike Rapoport @ 2017-11-08 6:54 UTC (permalink / raw)
To: Michael Kerrisk; +Cc: Andrea Arcangeli, linux-man, linux-mm, Mike Rapoport
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
---
man2/userfaultfd.2 | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index 1c9e64b..08c41e1 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -465,6 +465,16 @@ for checkpoint/restore mechanisms,
as well as post-copy migration to allow (nearly) uninterrupted execution
when transferring virtual machines and Linux containers
from one host to another.
+.SH BUGS
+If the
+.B UFFD_FEATURE_EVENT_FORK
+is enabled and a system call from the
+.BR fork (2)
+family is interrupted by a signal or failed,q a stale userfaultfd descriptor
+might be created.
+In this case a spurious
+.B UFFD_EVENT_FORK
+will be delivered to the userfaultfd monitor.
.SH EXAMPLE
The program below demonstrates the use of the userfaultfd mechanism.
The program creates two threads, one of which acts as the
--
2.7.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK
2017-11-08 6:54 [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK Mike Rapoport
@ 2017-11-09 7:44 ` Michael Kerrisk (man-pages)
0 siblings, 0 replies; 5+ messages in thread
From: Michael Kerrisk (man-pages) @ 2017-11-09 7:44 UTC (permalink / raw)
To: Mike Rapoport
Cc: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w, Andrea Arcangeli,
linux-man-u79uwXL29TY76Z2rM5mHXA, linux-mm
On 11/08/2017 07:54 AM, Mike Rapoport wrote:
> Signed-off-by: Mike Rapoport <rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Thanks, Mike. Applied.
Cheers,
Michael
> ---
> man2/userfaultfd.2 | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
> index 1c9e64b..08c41e1 100644
> --- a/man2/userfaultfd.2
> +++ b/man2/userfaultfd.2
> @@ -465,6 +465,16 @@ for checkpoint/restore mechanisms,
> as well as post-copy migration to allow (nearly) uninterrupted execution
> when transferring virtual machines and Linux containers
> from one host to another.
> +.SH BUGS
> +If the
> +.B UFFD_FEATURE_EVENT_FORK
> +is enabled and a system call from the
> +.BR fork (2)
> +family is interrupted by a signal or failed,q a stale userfaultfd descriptor
> +might be created.
> +In this case a spurious
> +.B UFFD_EVENT_FORK
> +will be delivered to the userfaultfd monitor.
> .SH EXAMPLE
> The program below demonstrates the use of the userfaultfd mechanism.
> The program creates two threads, one of which acts as the
>
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
--
To unsubscribe from this list: send the line "unsubscribe linux-man" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK
@ 2017-11-09 7:44 ` Michael Kerrisk (man-pages)
0 siblings, 0 replies; 5+ messages in thread
From: Michael Kerrisk (man-pages) @ 2017-11-09 7:44 UTC (permalink / raw)
To: Mike Rapoport; +Cc: mtk.manpages, Andrea Arcangeli, linux-man, linux-mm
On 11/08/2017 07:54 AM, Mike Rapoport wrote:
> Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Thanks, Mike. Applied.
Cheers,
Michael
> ---
> man2/userfaultfd.2 | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
> index 1c9e64b..08c41e1 100644
> --- a/man2/userfaultfd.2
> +++ b/man2/userfaultfd.2
> @@ -465,6 +465,16 @@ for checkpoint/restore mechanisms,
> as well as post-copy migration to allow (nearly) uninterrupted execution
> when transferring virtual machines and Linux containers
> from one host to another.
> +.SH BUGS
> +If the
> +.B UFFD_FEATURE_EVENT_FORK
> +is enabled and a system call from the
> +.BR fork (2)
> +family is interrupted by a signal or failed,q a stale userfaultfd descriptor
> +might be created.
> +In this case a spurious
> +.B UFFD_EVENT_FORK
> +will be delivered to the userfaultfd monitor.
> .SH EXAMPLE
> The program below demonstrates the use of the userfaultfd mechanism.
> The program creates two threads, one of which acts as the
>
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK
@ 2017-10-26 13:04 ` Mike Rapoport
0 siblings, 0 replies; 5+ messages in thread
From: Mike Rapoport @ 2017-10-26 13:04 UTC (permalink / raw)
To: Michael Kerrisk; +Cc: Andrea Arcangeli, linux-mm, linux-man, Mike Rapoport
Signed-off-by: Mike Rapoport <rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
man2/userfaultfd.2 | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index 1c9e64b..08c41e1 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -465,6 +465,16 @@ for checkpoint/restore mechanisms,
as well as post-copy migration to allow (nearly) uninterrupted execution
when transferring virtual machines and Linux containers
from one host to another.
+.SH BUGS
+If the
+.B UFFD_FEATURE_EVENT_FORK
+is enabled and a system call from the
+.BR fork (2)
+family is interrupted by a signal or failed,q a stale userfaultfd descriptor
+might be created.
+In this case a spurious
+.B UFFD_EVENT_FORK
+will be delivered to the userfaultfd monitor.
.SH EXAMPLE
The program below demonstrates the use of the userfaultfd mechanism.
The program creates two threads, one of which acts as the
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe linux-man" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK
@ 2017-10-26 13:04 ` Mike Rapoport
0 siblings, 0 replies; 5+ messages in thread
From: Mike Rapoport @ 2017-10-26 13:04 UTC (permalink / raw)
To: Michael Kerrisk; +Cc: Andrea Arcangeli, linux-mm, linux-man, Mike Rapoport
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
---
man2/userfaultfd.2 | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index 1c9e64b..08c41e1 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -465,6 +465,16 @@ for checkpoint/restore mechanisms,
as well as post-copy migration to allow (nearly) uninterrupted execution
when transferring virtual machines and Linux containers
from one host to another.
+.SH BUGS
+If the
+.B UFFD_FEATURE_EVENT_FORK
+is enabled and a system call from the
+.BR fork (2)
+family is interrupted by a signal or failed,q a stale userfaultfd descriptor
+might be created.
+In this case a spurious
+.B UFFD_EVENT_FORK
+will be delivered to the userfaultfd monitor.
.SH EXAMPLE
The program below demonstrates the use of the userfaultfd mechanism.
The program creates two threads, one of which acts as the
--
2.7.4
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2017-11-09 7:44 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-08 6:54 [PATCH] userfaultfd.2: document spurious UFFD_EVENT_FORK Mike Rapoport
[not found] ` <1510124048-7991-1-git-send-email-rppt-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-11-09 7:44 ` Michael Kerrisk (man-pages)
2017-11-09 7:44 ` Michael Kerrisk (man-pages)
-- strict thread matches above, loose matches on Subject: below --
2017-10-26 13:04 Mike Rapoport
2017-10-26 13:04 ` Mike Rapoport
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.