From: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>, Anton Arapov <aarapov@redhat.com>,
David Smith <dsmith@redhat.com>,
"Frank Ch. Eigler" <fche@redhat.com>,
Martin Cermak <mcermak@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/5] uprobes: Introduce __create_xol_area()
Date: Wed, 16 Oct 2013 18:11:25 +0530 [thread overview]
Message-ID: <20131016124125.GE19729@linux.vnet.ibm.com> (raw)
In-Reply-To: <20131013191835.GA32487@redhat.com>
* Oleg Nesterov <oleg@redhat.com> [2013-10-13 21:18:35]:
> No functional changes, preparation.
>
> Extract the code which actually allocates/installs the new area
> into the new helper, __create_xol_area().
>
> While at it remove the unnecessary "ret = ENOMEM" and "ret = 0"
> in xol_add_vma(), they both have no effect.
>
> Cc: stable@vger.kernel.org # 3.9+
> Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
One nit below.
>
> /* Slot allocation for XOL */
> -static int xol_add_vma(struct xol_area *area)
> +static int xol_add_vma(struct mm_struct *mm, struct xol_area *area)
> {
> - struct mm_struct *mm = current->mm;
> int ret = -EALREADY;
>
> down_write(&mm->mmap_sem);
> if (mm->uprobes_state.xol_area)
> goto fail;
>
> - ret = -ENOMEM;
> - /* Try to map as high as possible, this is only a hint. */
> + /* Try to map as high as possible, this is only a hint. */
Nit: This comment seems to be shifted unnecessarily.
--
Thanks and Regards
Srikar Dronamraju
next prev parent reply other threads:[~2013-10-16 12:41 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-13 19:18 [PATCH 0/5] uprobes: fix fork() with the pending ret-probe(s) Oleg Nesterov
2013-10-13 19:18 ` [PATCH 1/5] uprobes: Change the callsite of uprobe_copy_process() Oleg Nesterov
2013-10-16 12:37 ` Srikar Dronamraju
2013-10-13 19:18 ` [PATCH 2/5] uprobes: Introduce __create_xol_area() Oleg Nesterov
2013-10-16 12:41 ` Srikar Dronamraju [this message]
2013-10-16 12:50 ` Srikar Dronamraju
2013-10-13 19:18 ` [PATCH 3/5] uprobes: Teach __create_xol_area() to accept the predefined vaddr Oleg Nesterov
2013-10-16 12:43 ` Srikar Dronamraju
2013-10-13 19:18 ` [PATCH 4/5] uprobes: Change uprobe_copy_process() to dup return_instances Oleg Nesterov
2013-10-14 18:45 ` Peter Zijlstra
2013-10-14 19:00 ` Oleg Nesterov
2013-10-16 12:47 ` Srikar Dronamraju
2013-10-13 19:18 ` [PATCH 5/5] uprobes: Change uprobe_copy_process() to dup xol_area Oleg Nesterov
2013-10-14 14:09 ` Peter Zijlstra
2013-10-14 14:55 ` Oleg Nesterov
2013-10-14 15:47 ` Peter Zijlstra
2013-10-16 12:53 ` Srikar Dronamraju
2013-10-16 16:09 ` Oleg Nesterov
2013-10-18 15:49 ` Oleg Nesterov
2013-10-14 18:29 ` [PATCH 0/5] uprobes: fix fork() with the pending ret-probe(s) Oleg Nesterov
2013-10-16 17:38 ` Oleg Nesterov
2013-10-16 17:39 ` [PATCH 6/5] uprobes: Teach uprobe_copy_process() to handle CLONE_VFORK Oleg Nesterov
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