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Groups > linux.kernel > #1336269 > unrolled thread
| Started by | Chaitra P B <chaitra.basappa@broadcom.com> |
|---|---|
| First post | 2016-02-17 12:30 +0100 |
| Last post | 2016-02-18 01:00 +0100 |
| Articles | 4 — 4 participants |
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[PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() Chaitra P B <chaitra.basappa@broadcom.com> - 2016-02-17 12:30 +0100
Re: [PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() Johannes Thumshirn <jthumshirn@suse.de> - 2016-02-17 12:40 +0100
Re: [PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() Tomas Henzl <thenzl@redhat.com> - 2016-02-17 17:50 +0100
Re: [PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() "Martin K. Petersen" <martin.petersen@oracle.com> - 2016-02-18 01:00 +0100
| From | Chaitra P B <chaitra.basappa@broadcom.com> |
|---|---|
| Date | 2016-02-17 12:30 +0100 |
| Subject | [PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() |
| Message-ID | <r38sX-5EQ-27@gated-at.bofh.it> |
Deallocates resources before reallocating of the same in retry_allocation
path of _base_allocate_memory_pools()
Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index f59495b..60c2e86 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -3124,8 +3124,10 @@ _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
ioc->scsi_lookup = NULL;
}
- kfree(ioc->hpr_lookup);
- kfree(ioc->internal_lookup);
+ if (ioc->hpr_lookup)
+ kfree(ioc->hpr_lookup);
+ if (ioc->internal_lookup)
+ kfree(ioc->internal_lookup);
if (ioc->chain_lookup) {
for (i = 0; i < ioc->chain_depth; i++) {
if (ioc->chain_lookup[i].chain_buffer)
@@ -3360,6 +3362,7 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
goto out;
retry_sz += 64;
ioc->hba_queue_depth = max_request_credit - retry_sz;
+ _base_release_memory_pools(ioc);
goto retry_allocation;
}
--
1.8.3.1
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| From | Johannes Thumshirn <jthumshirn@suse.de> |
|---|---|
| Date | 2016-02-17 12:40 +0100 |
| Subject | Re: [PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() |
| Message-ID | <r38CC-5Js-19@gated-at.bofh.it> |
| In reply to | #1336269 |
On Wed, Feb 17, 2016 at 04:55:25PM +0530, Chaitra P B wrote:
> Deallocates resources before reallocating of the same in retry_allocation
> path of _base_allocate_memory_pools()
>
> Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
> Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
> ---
> drivers/scsi/mpt3sas/mpt3sas_base.c | 7 +++++--
> 1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
> index f59495b..60c2e86 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
> +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
> @@ -3124,8 +3124,10 @@ _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
> free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
> ioc->scsi_lookup = NULL;
> }
> - kfree(ioc->hpr_lookup);
> - kfree(ioc->internal_lookup);
> + if (ioc->hpr_lookup)
> + kfree(ioc->hpr_lookup);
> + if (ioc->internal_lookup)
> + kfree(ioc->internal_lookup);
kfree() can handle NULL pointers as arguments, so checking isn't needed. In
fact there are coccinelle scripts to check for it (make coccicheck) and it'll
spawn patches from people "fixing" it. So please get rid of the checks.
Otherwise
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
> if (ioc->chain_lookup) {
> for (i = 0; i < ioc->chain_depth; i++) {
> if (ioc->chain_lookup[i].chain_buffer)
> @@ -3360,6 +3362,7 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
> goto out;
> retry_sz += 64;
> ioc->hba_queue_depth = max_request_credit - retry_sz;
> + _base_release_memory_pools(ioc);
> goto retry_allocation;
> }
>
> --
> 1.8.3.1
>
> --
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--
Johannes Thumshirn Storage
jthumshirn@suse.de +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
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| From | Tomas Henzl <thenzl@redhat.com> |
|---|---|
| Date | 2016-02-17 17:50 +0100 |
| Subject | Re: [PATCH 1/2] mpt3sas: Deallocate resources before trying reallocation of the same in _base_allocate_memory_pools() |
| Message-ID | <r3dsC-BT-7@gated-at.bofh.it> |
| In reply to | #1336280 |
On 17.2.2016 12:36, Johannes Thumshirn wrote:
> On Wed, Feb 17, 2016 at 04:55:25PM +0530, Chaitra P B wrote:
>> Deallocates resources before reallocating of the same in retry_allocation
>> path of _base_allocate_memory_pools()
>>
>> Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
>> Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
>> ---
>> drivers/scsi/mpt3sas/mpt3sas_base.c | 7 +++++--
>> 1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
>> index f59495b..60c2e86 100644
>> --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
>> +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
>> @@ -3124,8 +3124,10 @@ _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
>> free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
>> ioc->scsi_lookup = NULL;
>> }
>> - kfree(ioc->hpr_lookup);
>> - kfree(ioc->internal_lookup);
>> + if (ioc->hpr_lookup)
>> + kfree(ioc->hpr_lookup);
>> + if (ioc->internal_lookup)
>> + kfree(ioc->internal_lookup);
> kfree() can handle NULL pointers as arguments, so checking isn't needed. In
> fact there are coccinelle scripts to check for it (make coccicheck) and it'll
> spawn patches from people "fixing" it. So please get rid of the checks.
>
> Otherwise
>
> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
>
>> if (ioc->chain_lookup) {
>> for (i = 0; i < ioc->chain_depth; i++) {
>> if (ioc->chain_lookup[i].chain_buffer)
>> @@ -3360,6 +3362,7 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
>> goto out;
>> retry_sz += 64;
>> ioc->hba_queue_depth = max_request_credit - retry_sz;
>> + _base_release_memory_pools(ioc);
>> goto retry_allocation;
Thanks for posting
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
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| From | "Martin K. Petersen" <martin.petersen@oracle.com> |
|---|---|
| Date | 2016-02-18 01:00 +0100 |
| Message-ID | <r3kaK-5hs-5@gated-at.bofh.it> |
| In reply to | #1336269 |
>>>>> "Chaitra" == Chaitra P B <chaitra.basappa@broadcom.com> writes: Chaitra> Deallocates resources before reallocating of the same in Chaitra> retry_allocation path of _base_allocate_memory_pools() Johannes' comments about kfree() aside, this patch does not apply to 4.6/scsi-queue which has the driver update from Suganath. Please rebase and resubmit. -- Martin K. Petersen Oracle Linux Engineering
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