From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Michal Nazarewicz <mina86@mina86.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
kvm@vger.kernel.org, linux-mm@kvack.org,
Gleb Natapov <gleb@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alexander Graf <agraf@suse.de>,
kvm-ppc@vger.kernel.org, linux-kernel@vger.kernel.org,
Minchan Kim <minchan@kernel.org>,
Paul Mackerras <paulus@samba.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 08/10] mm, cma: clean-up cma allocation error path
Date: Sat, 14 Jun 2014 12:48:30 +0530 [thread overview]
Message-ID: <87y4x0ez7d.fsf@linux.vnet.ibm.com> (raw)
In-Reply-To: <1402543307-29800-9-git-send-email-iamjoonsoo.kim@lge.com>
Joonsoo Kim <iamjoonsoo.kim@lge.com> writes:
> We can remove one call sites for clear_cma_bitmap() if we first
> call it before checking error number.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
>
> diff --git a/mm/cma.c b/mm/cma.c
> index 1e1b017..01a0713 100644
> --- a/mm/cma.c
> +++ b/mm/cma.c
> @@ -282,11 +282,12 @@ struct page *cma_alloc(struct cma *cma, int count, unsigned int align)
> if (ret == 0) {
> page = pfn_to_page(pfn);
> break;
> - } else if (ret != -EBUSY) {
> - clear_cma_bitmap(cma, pfn, count);
> - break;
> }
> +
> clear_cma_bitmap(cma, pfn, count);
> + if (ret != -EBUSY)
> + break;
> +
> pr_debug("%s(): memory range at %p is busy, retrying\n",
> __func__, pfn_to_page(pfn));
> /* try again with a bit different memory target */
> --
> 1.7.9.5
next prev parent reply other threads:[~2014-06-14 7:18 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-12 3:21 [PATCH v2 00/10] CMA: generalize CMA reserved area management code Joonsoo Kim
2014-06-12 3:21 ` [PATCH v2 01/10] DMA, CMA: clean-up log message Joonsoo Kim
2014-06-12 4:41 ` Aneesh Kumar K.V
2014-06-12 5:53 ` Joonsoo Kim
2014-06-12 8:55 ` Michal Nazarewicz
2014-06-12 9:53 ` Michal Nazarewicz
2014-06-16 5:18 ` Joonsoo Kim
2014-06-12 5:18 ` Minchan Kim
2014-06-12 5:55 ` Joonsoo Kim
2014-06-12 8:15 ` Zhang Yanfei
2014-06-12 8:56 ` Michal Nazarewicz
2014-06-12 3:21 ` [PATCH v2 02/10] DMA, CMA: fix possible memory leak Joonsoo Kim
2014-06-12 4:43 ` Aneesh Kumar K.V
2014-06-12 5:25 ` Minchan Kim
2014-06-12 6:02 ` Joonsoo Kim
2014-06-12 8:19 ` Zhang Yanfei
2014-06-12 9:47 ` Michal Nazarewicz
2014-06-12 3:21 ` [PATCH v2 03/10] DMA, CMA: separate core cma management codes from DMA APIs Joonsoo Kim
2014-06-12 4:44 ` Aneesh Kumar K.V
2014-06-12 5:37 ` Minchan Kim
2014-06-16 5:24 ` Joonsoo Kim
2014-06-12 9:55 ` Michal Nazarewicz
2014-06-12 3:21 ` [PATCH v2 04/10] DMA, CMA: support alignment constraint on cma region Joonsoo Kim
2014-06-12 4:50 ` Aneesh Kumar K.V
2014-06-12 5:52 ` Minchan Kim
2014-06-12 6:07 ` Joonsoo Kim
2014-06-12 10:02 ` Michal Nazarewicz
2014-06-16 5:19 ` Joonsoo Kim
2014-06-12 3:21 ` [PATCH v2 05/10] DMA, CMA: support arbitrary bitmap granularity Joonsoo Kim
2014-06-12 6:06 ` Minchan Kim
2014-06-12 6:43 ` Joonsoo Kim
2014-06-12 6:42 ` Minchan Kim
2014-06-12 7:08 ` Minchan Kim
2014-06-12 7:25 ` Zhang Yanfei
2014-06-12 7:41 ` Joonsoo Kim
2014-06-12 8:28 ` Zhang Yanfei
2014-06-12 10:19 ` Michal Nazarewicz
2014-06-16 5:23 ` Joonsoo Kim
2014-06-14 10:09 ` Aneesh Kumar K.V
2014-06-12 3:21 ` [PATCH v2 06/10] CMA: generalize CMA reserved area management functionality Joonsoo Kim
2014-06-12 7:13 ` Minchan Kim
2014-06-12 7:42 ` Joonsoo Kim
2014-06-12 8:29 ` Zhang Yanfei
2014-06-14 10:06 ` Aneesh Kumar K.V
2014-06-14 10:08 ` Aneesh Kumar K.V
2014-06-14 10:16 ` Aneesh Kumar K.V
2014-06-16 5:27 ` Joonsoo Kim
2014-06-12 3:21 ` [PATCH v2 07/10] PPC, KVM, CMA: use general CMA reserved area management framework Joonsoo Kim
2014-06-14 8:53 ` Aneesh Kumar K.V
2014-06-16 5:34 ` Joonsoo Kim
2014-06-16 7:02 ` Aneesh Kumar K.V
2014-06-14 10:05 ` Aneesh Kumar K.V
2014-06-16 5:29 ` Joonsoo Kim
2014-06-12 3:21 ` [PATCH v2 08/10] mm, cma: clean-up cma allocation error path Joonsoo Kim
2014-06-12 7:16 ` Minchan Kim
2014-06-12 8:31 ` Zhang Yanfei
2014-06-12 11:34 ` Michal Nazarewicz
2014-06-14 7:18 ` Aneesh Kumar K.V [this message]
2014-06-12 3:21 ` [PATCH v2 09/10] mm, cma: move output param to the end of param list Joonsoo Kim
2014-06-12 7:19 ` Minchan Kim
2014-06-12 7:43 ` Joonsoo Kim
2014-06-12 11:38 ` Michal Nazarewicz
2014-06-14 7:20 ` Aneesh Kumar K.V
2014-06-12 3:21 ` [PATCH v2 10/10] mm, cma: use spinlock instead of mutex Joonsoo Kim
2014-06-12 7:40 ` Minchan Kim
2014-06-12 7:56 ` Joonsoo Kim
2014-06-14 7:25 ` [PATCH v2 00/10] CMA: generalize CMA reserved area management code Aneesh Kumar K.V
2014-06-16 5:32 ` Joonsoo Kim
2014-06-16 7:04 ` Aneesh Kumar K.V
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