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| Started by | Kenneth Lee <liguozhu@hisilicon.com> |
|---|---|
| First post | 2016-12-30 12:00 +0100 |
| Last post | 2017-01-03 11:20 +0100 |
| Articles | 5 — 2 participants |
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[PATCH v3] IB/umem: Release pid in error and ODP flow Kenneth Lee <liguozhu@hisilicon.com> - 2016-12-30 12:00 +0100
Re: [PATCH v3] IB/umem: Release pid in error and ODP flow Leon Romanovsky <leon@kernel.org> - 2017-01-01 07:50 +0100
Re: [PATCH v3] IB/umem: Release pid in error and ODP flow Kenneth Lee <liguozhu@hisilicon.com> - 2017-01-03 02:50 +0100
Re: [PATCH v3] IB/umem: Release pid in error and ODP flow Kenneth Lee <liguozhu@hisilicon.com> - 2017-01-03 03:10 +0100
Re: [PATCH v3] IB/umem: Release pid in error and ODP flow Leon Romanovsky <leon@kernel.org> - 2017-01-03 11:20 +0100
| From | Kenneth Lee <liguozhu@hisilicon.com> |
|---|---|
| Date | 2016-12-30 12:00 +0100 |
| Subject | [PATCH v3] IB/umem: Release pid in error and ODP flow |
| Message-ID | <sU34K-3gb-19@gated-at.bofh.it> |
There are two bugfixes in this patch:
Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get")
This patch introduce the get_task_pid but not put it back on all error
path
Fixes: 8ada2c1c0c1d ("IB/core: Add support for on demand paging regions")
This patch introduce a ODP flow without release pid before enter it
Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
Reviewed-by: Haggai Eran <haggaie@mellanox.com>
---
Change from v1 to v2:
Correcting the patch title and description
Change from v2 to v3:
Update the title and add "Fixes" fields in the description
drivers/infiniband/core/umem.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index 1e62a5f..4609b92 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -134,6 +134,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND));
if (access & IB_ACCESS_ON_DEMAND) {
+ put_pid(umem->pid);
ret = ib_umem_odp_get(context, umem);
if (ret) {
kfree(umem);
@@ -149,6 +150,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
page_list = (struct page **) __get_free_page(GFP_KERNEL);
if (!page_list) {
+ put_pid(umem->pid);
kfree(umem);
return ERR_PTR(-ENOMEM);
}
--
1.9.1
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| From | Leon Romanovsky <leon@kernel.org> |
|---|---|
| Date | 2017-01-01 07:50 +0100 |
| Message-ID | <sUI7T-5lK-1@gated-at.bofh.it> |
| In reply to | #1548534 |
[Multipart message — attachments visible in raw view] — view raw
On Fri, Dec 30, 2016 at 06:18:29PM +0800, Kenneth Lee wrote:
> There are two bugfixes in this patch:
>
> Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get")
> This patch introduce the get_task_pid but not put it back on all error
> path
>
> Fixes: 8ada2c1c0c1d ("IB/core: Add support for on demand paging regions")
> This patch introduce a ODP flow without release pid before enter it
>
>
> Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
> Reviewed-by: Haggai Eran <haggaie@mellanox.com>
> ---
> Change from v1 to v2:
> Correcting the patch title and description
> Change from v2 to v3:
> Update the title and add "Fixes" fields in the description
OK,
I see that you still didn't read Documentation/SubmittingPatches. You
must read that document before you are sending patches.
But I'll stop here, the code is correct (it fixes bugs) and commit message
more usefull than before.
>
> drivers/infiniband/core/umem.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
> index 1e62a5f..4609b92 100644
> --- a/drivers/infiniband/core/umem.c
> +++ b/drivers/infiniband/core/umem.c
> @@ -134,6 +134,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND));
>
> if (access & IB_ACCESS_ON_DEMAND) {
> + put_pid(umem->pid);
> ret = ib_umem_odp_get(context, umem);
> if (ret) {
> kfree(umem);
> @@ -149,6 +150,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
>
> page_list = (struct page **) __get_free_page(GFP_KERNEL);
> if (!page_list) {
> + put_pid(umem->pid);
> kfree(umem);
> return ERR_PTR(-ENOMEM);
> }
> --
> 1.9.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
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| From | Kenneth Lee <liguozhu@hisilicon.com> |
|---|---|
| Date | 2017-01-03 02:50 +0100 |
| Message-ID | <sVmoF-7jY-3@gated-at.bofh.it> |
| In reply to | #1548864 |
Thanks,
I did read the doc, but maybe I mis-understant some points. Could you please
point it out?
On Sun, Jan 01, 2017 at 08:47:12AM +0200, Leon Romanovsky wrote:
> Date: Sun, 1 Jan 2017 08:47:12 +0200
> From: Leon Romanovsky <leon@kernel.org>
> To: Kenneth Lee <liguozhu@hisilicon.com>
> CC: dledford@redhat.com, sean.hefty@intel.com, hal.rosenstock@gmail.com,
> robin.murphy@arm.com, jroedel@suse.de, egtvedt@samfundet.no,
> vgupta@synopsys.com, dave.hansen@linux.intel.com, lstoakes@gmail.com,
> krzk@kernel.org, sebott@linux.vnet.ibm.com, markb@mellanox.com,
> linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v3] IB/umem: Release pid in error and ODP flow
> User-Agent: Mutt/1.7.2 (2016-11-26)
> Message-ID: <20170101064712.GQ26885@mtr-leonro.local>
>
> On Fri, Dec 30, 2016 at 06:18:29PM +0800, Kenneth Lee wrote:
> > There are two bugfixes in this patch:
> >
> > Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get")
> > This patch introduce the get_task_pid but not put it back on all error
> > path
> >
> > Fixes: 8ada2c1c0c1d ("IB/core: Add support for on demand paging regions")
> > This patch introduce a ODP flow without release pid before enter it
> >
> >
> > Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
> > Reviewed-by: Haggai Eran <haggaie@mellanox.com>
> > ---
> > Change from v1 to v2:
> > Correcting the patch title and description
> > Change from v2 to v3:
> > Update the title and add "Fixes" fields in the description
>
> OK,
>
> I see that you still didn't read Documentation/SubmittingPatches. You
> must read that document before you are sending patches.
>
> But I'll stop here, the code is correct (it fixes bugs) and commit message
> more usefull than before.
>
>
> >
> > drivers/infiniband/core/umem.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
> > index 1e62a5f..4609b92 100644
> > --- a/drivers/infiniband/core/umem.c
> > +++ b/drivers/infiniband/core/umem.c
> > @@ -134,6 +134,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> > IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND));
> >
> > if (access & IB_ACCESS_ON_DEMAND) {
> > + put_pid(umem->pid);
> > ret = ib_umem_odp_get(context, umem);
> > if (ret) {
> > kfree(umem);
> > @@ -149,6 +150,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> >
> > page_list = (struct page **) __get_free_page(GFP_KERNEL);
> > if (!page_list) {
> > + put_pid(umem->pid);
> > kfree(umem);
> > return ERR_PTR(-ENOMEM);
> > }
> > --
> > 1.9.1
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
--
-Kenneth(Hisilicon)
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| From | Kenneth Lee <liguozhu@hisilicon.com> |
|---|---|
| Date | 2017-01-03 03:10 +0100 |
| Message-ID | <sVmI2-7Fn-5@gated-at.bofh.it> |
| In reply to | #1548864 |
On Sun, Jan 01, 2017 at 08:47:12AM +0200, Leon Romanovsky wrote:
> Date: Sun, 1 Jan 2017 08:47:12 +0200
> From: Leon Romanovsky <leon@kernel.org>
> To: Kenneth Lee <liguozhu@hisilicon.com>
> CC: dledford@redhat.com, sean.hefty@intel.com, hal.rosenstock@gmail.com,
> robin.murphy@arm.com, jroedel@suse.de, egtvedt@samfundet.no,
> vgupta@synopsys.com, dave.hansen@linux.intel.com, lstoakes@gmail.com,
> krzk@kernel.org, sebott@linux.vnet.ibm.com, markb@mellanox.com,
> linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
> Subject: Re: [PATCH v3] IB/umem: Release pid in error and ODP flow
> User-Agent: Mutt/1.7.2 (2016-11-26)
> Message-ID: <20170101064712.GQ26885@mtr-leonro.local>
>
> On Fri, Dec 30, 2016 at 06:18:29PM +0800, Kenneth Lee wrote:
> > There are two bugfixes in this patch:
> >
> > Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get")
> > This patch introduce the get_task_pid but not put it back on all error
> > path
> >
> > Fixes: 8ada2c1c0c1d ("IB/core: Add support for on demand paging regions")
> > This patch introduce a ODP flow without release pid before enter it
> >
> >
> > Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
> > Reviewed-by: Haggai Eran <haggaie@mellanox.com>
> > ---
> > Change from v1 to v2:
> > Correcting the patch title and description
> > Change from v2 to v3:
> > Update the title and add "Fixes" fields in the description
>
> OK,
>
> I see that you still didn't read Documentation/SubmittingPatches. You
> must read that document before you are sending patches.
>
> But I'll stop here, the code is correct (it fixes bugs) and commit message
> more usefull than before.
>
>
> >
> > drivers/infiniband/core/umem.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
> > index 1e62a5f..4609b92 100644
> > --- a/drivers/infiniband/core/umem.c
> > +++ b/drivers/infiniband/core/umem.c
> > @@ -134,6 +134,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> > IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND));
> >
> > if (access & IB_ACCESS_ON_DEMAND) {
> > + put_pid(umem->pid);
> > ret = ib_umem_odp_get(context, umem);
> > if (ret) {
> > kfree(umem);
> > @@ -149,6 +150,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> >
> > page_list = (struct page **) __get_free_page(GFP_KERNEL);
> > if (!page_list) {
> > + put_pid(umem->pid);
> > kfree(umem);
> > return ERR_PTR(-ENOMEM);
> > }
> > --
> > 1.9.1
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
Thanks,
I did read the doc, but maybe I mis-understant some points. Could you please
point it out?
And sorry. please ignore the last message. I forget to use a bottom-post style.
--
-Kenneth(Hisilicon)
[toc] | [prev] | [next] | [standalone]
| From | Leon Romanovsky <leon@kernel.org> |
|---|---|
| Date | 2017-01-03 11:20 +0100 |
| Message-ID | <sVume-4Og-9@gated-at.bofh.it> |
| In reply to | #1549498 |
[Multipart message — attachments visible in raw view] — view raw
On Tue, Jan 03, 2017 at 10:32:50AM +0800, Kenneth Lee wrote:
> On Sun, Jan 01, 2017 at 08:47:12AM +0200, Leon Romanovsky wrote:
> > Date: Sun, 1 Jan 2017 08:47:12 +0200
> > From: Leon Romanovsky <leon@kernel.org>
> > To: Kenneth Lee <liguozhu@hisilicon.com>
> > CC: dledford@redhat.com, sean.hefty@intel.com, hal.rosenstock@gmail.com,
> > robin.murphy@arm.com, jroedel@suse.de, egtvedt@samfundet.no,
> > vgupta@synopsys.com, dave.hansen@linux.intel.com, lstoakes@gmail.com,
> > krzk@kernel.org, sebott@linux.vnet.ibm.com, markb@mellanox.com,
> > linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org
> > Subject: Re: [PATCH v3] IB/umem: Release pid in error and ODP flow
> > User-Agent: Mutt/1.7.2 (2016-11-26)
> > Message-ID: <20170101064712.GQ26885@mtr-leonro.local>
> >
> > On Fri, Dec 30, 2016 at 06:18:29PM +0800, Kenneth Lee wrote:
> > > There are two bugfixes in this patch:
> > >
> > > Fixes: 87773dd56d54 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get")
> > > This patch introduce the get_task_pid but not put it back on all error
> > > path
> > >
> > > Fixes: 8ada2c1c0c1d ("IB/core: Add support for on demand paging regions")
> > > This patch introduce a ODP flow without release pid before enter it
> > >
> > >
> > > Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
> > > Reviewed-by: Haggai Eran <haggaie@mellanox.com>
> > > ---
> > > Change from v1 to v2:
> > > Correcting the patch title and description
> > > Change from v2 to v3:
> > > Update the title and add "Fixes" fields in the description
> >
> > OK,
> >
> > I see that you still didn't read Documentation/SubmittingPatches. You
> > must read that document before you are sending patches.
> >
> > But I'll stop here, the code is correct (it fixes bugs) and commit message
> > more usefull than before.
> >
> >
> > >
> > > drivers/infiniband/core/umem.c | 2 ++
> > > 1 file changed, 2 insertions(+)
> > >
> > > diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
> > > index 1e62a5f..4609b92 100644
> > > --- a/drivers/infiniband/core/umem.c
> > > +++ b/drivers/infiniband/core/umem.c
> > > @@ -134,6 +134,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> > > IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_MW_BIND));
> > >
> > > if (access & IB_ACCESS_ON_DEMAND) {
> > > + put_pid(umem->pid);
> > > ret = ib_umem_odp_get(context, umem);
> > > if (ret) {
> > > kfree(umem);
> > > @@ -149,6 +150,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
> > >
> > > page_list = (struct page **) __get_free_page(GFP_KERNEL);
> > > if (!page_list) {
> > > + put_pid(umem->pid);
> > > kfree(umem);
> > > return ERR_PTR(-ENOMEM);
> > > }
> > > --
> > > 1.9.1
> > >
> > > --
> > > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> > > the body of a message to majordomo@vger.kernel.org
> > > More majordomo info at http://vger.kernel.org/majordomo-info.html
>
> Thanks,
>
> I did read the doc, but maybe I mis-understant some points. Could you please
> point it out?
Fixes line should be placed above bottom signatures.
As an example of properly written patch, you can take a look on the
following patch [1] from Steve.
[1] http://marc.info/?l=linux-rdma&m=148244272205411&w=2
>
> And sorry. please ignore the last message. I forget to use a bottom-post style.
>
>
>
> --
> -Kenneth(Hisilicon)
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