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SubjectRe: [PATCH] aio: clean up aio ring in the fail path
On 12/05/2013 09:14 AM, Gu Zheng wrote:

> Hi Dave,
>
> On 12/04/2013 10:54 PM, Dave Jones wrote:
>
>> On Wed, Dec 04, 2013 at 06:19:06PM +0800, Gu Zheng wrote:
>> > Clean up the aio ring file in the fail path of aio_setup_ring
>> > and ioctx_alloc. And maybe it can fix the GPF issue reported by
>> > Dave Jones:
>> > https://lkml.org/lkml/2013/11/25/898
>> >
>> >
>> > Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
>> > ---
>> > fs/aio.c | 8 ++++++--
>> > 1 files changed, 6 insertions(+), 2 deletions(-)
>> >
>> > diff --git a/fs/aio.c b/fs/aio.c
>> > index 08159ed..6efb7f6 100644
>> > --- a/fs/aio.c
>> > +++ b/fs/aio.c
>> > @@ -367,8 +367,10 @@ static int aio_setup_ring(struct kioctx *ctx)
>> > if (nr_pages > AIO_RING_PAGES) {
>> > ctx->ring_pages = kcalloc(nr_pages, sizeof(struct page *),
>> > GFP_KERNEL);
>> > - if (!ctx->ring_pages)
>> > + if (!ctx->ring_pages) {
>> > + put_aio_ring_file(ctx);
>> > return -ENOMEM;
>> > + }
>> > }
>> >
>>
>> CC fs/aio.o
>> fs/aio.c: In function ‘aio_setup_ring’:
>> fs/aio.c:363:4: error: implicit declaration of function ‘put_aio_ring_file’ [-Werror=implicit-function-declaration]
>> put_aio_ring_file(ctx);
>>
>>
>> Is this dependant on another patch ?
>
> It's applied on 3.12-rc2. Please ignore the previous defective patch I sent

Sorry, s/3.12-rc2/3.13-rc2/

> before, and try again.
>
> Regards,
> Gu
>
>>
>> Dave
>>
>> --
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>
>


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