Btrfs devel - Jan 2010 - [RFC INFO PATCH 02/03] export use_mm and unuse_mm for filesystem modules.

required for btrfs directio worker threads.

Signed-off-by: jim owens <jowens@hp.com>
---
mm/mmu_context.c |    3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/mm/mmu_context.c b/mm/mmu_context.c
index ded9081..daabf4d 100644
--- a/mm/mmu_context.c
+++ b/mm/mmu_context.c
@@ -3,6 +3,7 @@
 * See ../COPYING for licensing terms.
 */

+#include <linux/module.h>
#include <linux/mm.h>
#include <linux/mmu_context.h>
#include <linux/sched.h>
@@ -37,6 +38,7 @@ void use_mm(struct mm_struct *mm)
    if (active_mm != mm)
        mmdrop(active_mm);
}
+EXPORT_SYMBOL_GPL(use_mm);

/*
 * unuse_mm
@@ -56,3 +58,4 @@ void unuse_mm(struct mm_struct *mm)
    enter_lazy_tlb(mm, tsk);
    task_unlock(tsk);
}
+EXPORT_SYMBOL_GPL(unuse_mm);
-- 
1.5.6.3

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Maybe, you should send this patch to

Andrew Morton <akpm@linux-foundation.org>
Andrea Arcangeli <aarcange@redhat.com>
Michael S. Tsirkin <mst@redhat.com>
linux-kernel@vger.kernel.org
linux-mm@kvack.org


于 2010年01月20日 05:58, jim owens 写道:
> required for btrfs directio worker threads.
>
> Signed-off-by: jim owens<jowens@hp.com>
> ---
> mm/mmu_context.c |    3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/mm/mmu_context.c b/mm/mmu_context.c
> index ded9081..daabf4d 100644
> --- a/mm/mmu_context.c
> +++ b/mm/mmu_context.c
> @@ -3,6 +3,7 @@
>   * See ../COPYING for licensing terms.
>   */
>
> +#include<linux/module.h>
> #include<linux/mm.h>
> #include<linux/mmu_context.h>
> #include<linux/sched.h>
> @@ -37,6 +38,7 @@ void use_mm(struct mm_struct *mm)
>      if (active_mm != mm)
>          mmdrop(active_mm);
> }
> +EXPORT_SYMBOL_GPL(use_mm);
>
> /*
>   * unuse_mm
> @@ -56,3 +58,4 @@ void unuse_mm(struct mm_struct *mm)
>      enter_lazy_tlb(mm, tsk);
>      task_unlock(tsk);
> }
> +EXPORT_SYMBOL_GPL(unuse_mm);
>    
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Liuwenyi wrote:
> Maybe, you should send this patch to
> 
> Andrew Morton <akpm@linux-foundation.org>
> Andrea Arcangeli <aarcange@redhat.com>
> Michael S. Tsirkin <mst@redhat.com>
> linux-kernel@vger.kernel.org
> linux-mm@kvack.org
I said in [00] that I sent this patch to Andrew.

What I did not say was it was sent on December 9, 2009
to every addess on your list, except for Andrea.

jim

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jim owens wrote:
> 
> What I did not say was it was sent on December 9, 2009
> to every addess on your list, except for Andrea.
OK, as josef told me, the patch is corrupt and will not apply.

I am sending a new one I just made against btrfs-unstable
to linux-btrfs and will create a new patch for Andrew
when the directIO code has been tested.

jim
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