* [PATCH] btrfs: raid56: avoid double allocation
@ 2013-07-25 0:09 Andi Shyti
2013-07-25 8:18 ` Liu Bo
0 siblings, 1 reply; 3+ messages in thread
From: Andi Shyti @ 2013-07-25 0:09 UTC (permalink / raw)
To: chris.mason; +Cc: linux-btrfs, linux-kernel, andi
alloc_rbio frees already bbio and raid_map, therefore they don't
need to be freed in case it fails
Signed-off-by: Andi Shyti <andi@etezian.org>
---
fs/btrfs/raid56.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 0525e13..35fe775 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1687,11 +1687,9 @@ int raid56_parity_write(struct btrfs_root *root, struct bio *bio,
struct blk_plug_cb *cb;
rbio = alloc_rbio(root, bbio, raid_map, stripe_len);
- if (IS_ERR(rbio)) {
- kfree(raid_map);
- kfree(bbio);
+ if (IS_ERR(rbio))
return PTR_ERR(rbio);
- }
+
bio_list_add(&rbio->bio_list, bio);
rbio->bio_list_bytes = bio->bi_size;
--
1.8.3.2
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] btrfs: raid56: avoid double allocation
2013-07-25 0:09 [PATCH] btrfs: raid56: avoid double allocation Andi Shyti
@ 2013-07-25 8:18 ` Liu Bo
2013-07-25 8:26 ` Miao Xie
0 siblings, 1 reply; 3+ messages in thread
From: Liu Bo @ 2013-07-25 8:18 UTC (permalink / raw)
To: Andi Shyti; +Cc: chris.mason, linux-btrfs, linux-kernel
On Thu, Jul 25, 2013 at 02:09:40AM +0200, Andi Shyti wrote:
> alloc_rbio frees already bbio and raid_map, therefore they don't
> need to be freed in case it fails
>
Looks good to me.
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
> Signed-off-by: Andi Shyti <andi@etezian.org>
> ---
> fs/btrfs/raid56.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
> index 0525e13..35fe775 100644
> --- a/fs/btrfs/raid56.c
> +++ b/fs/btrfs/raid56.c
> @@ -1687,11 +1687,9 @@ int raid56_parity_write(struct btrfs_root *root, struct bio *bio,
> struct blk_plug_cb *cb;
>
> rbio = alloc_rbio(root, bbio, raid_map, stripe_len);
> - if (IS_ERR(rbio)) {
> - kfree(raid_map);
> - kfree(bbio);
> + if (IS_ERR(rbio))
> return PTR_ERR(rbio);
> - }
> +
> bio_list_add(&rbio->bio_list, bio);
> rbio->bio_list_bytes = bio->bi_size;
>
> --
> 1.8.3.2
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> Please read the FAQ at http://www.tux.org/lkml/
-liubo
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] btrfs: raid56: avoid double allocation
2013-07-25 8:18 ` Liu Bo
@ 2013-07-25 8:26 ` Miao Xie
0 siblings, 0 replies; 3+ messages in thread
From: Miao Xie @ 2013-07-25 8:26 UTC (permalink / raw)
To: bo.li.liu; +Cc: Andi Shyti, chris.mason, linux-btrfs, linux-kernel
On thu, 25 Jul 2013 16:18:41 +0800, Liu Bo wrote:
> On Thu, Jul 25, 2013 at 02:09:40AM +0200, Andi Shyti wrote:
>> alloc_rbio frees already bbio and raid_map, therefore they don't
>> need to be freed in case it fails
>>
>
> Looks good to me.
>
> Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Dan Carpenter has fixed this problem in patch
https://patchwork.kernel.org/patch/2831091/
Thanks
Miao
>
>> Signed-off-by: Andi Shyti <andi@etezian.org>
>> ---
>> fs/btrfs/raid56.c | 6 ++----
>> 1 file changed, 2 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
>> index 0525e13..35fe775 100644
>> --- a/fs/btrfs/raid56.c
>> +++ b/fs/btrfs/raid56.c
>> @@ -1687,11 +1687,9 @@ int raid56_parity_write(struct btrfs_root *root, struct bio *bio,
>> struct blk_plug_cb *cb;
>>
>> rbio = alloc_rbio(root, bbio, raid_map, stripe_len);
>> - if (IS_ERR(rbio)) {
>> - kfree(raid_map);
>> - kfree(bbio);
>> + if (IS_ERR(rbio))
>> return PTR_ERR(rbio);
>> - }
>> +
>> bio_list_add(&rbio->bio_list, bio);
>> rbio->bio_list_bytes = bio->bi_size;
>>
>> --
>> 1.8.3.2
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at http://www.tux.org/lkml/
> -liubo
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-07-25 8:18 ` Liu Bo
2013-07-25 8:26 ` Miao Xie
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