From: Johannes Thumshirn <jthumshirn@suse.de>
To: Lee Duncan <lduncan@suse.com>
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
James Bottomley <James.Bottomley@HansenPartnership.com>,
Tejun Heo <tj@kernel.org>, Hannes Reinecke <hare@suse.com>,
Christoph Hellwig <hch@infradead.org>,
Joshua Morris <josh.h.morris@us.ibm.com>,
Philip Kelleher <pjk1939@linux.vnet.ibm.com>
Subject: Re: [PATCH 2/5] block: rsxx: core: simplify ida usage
Date: Fri, 02 Oct 2015 12:15:26 +0200 [thread overview]
Message-ID: <mqdy4fl7f0h.fsf@c203.arch.suse.de> (raw)
In-Reply-To: <8d2f1dca7162a499d82de53be88110695334d8ef.1443723136.git.lduncan@suse.com> (Lee Duncan's message of "Thu, 1 Oct 2015 11:59:06 -0700")
Lee Duncan <lduncan@suse.com> writes:
> Simplify ida index allocation and removal by
> using the ida_simple_* helper functions.
>
> Signed-off-by: Lee Duncan <lduncan@suse.com>
> ---
> drivers/block/rsxx/core.c | 20 ++++----------------
> 1 file changed, 4 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
> index d8b2488aaade..d2279a759b2e 100644
> --- a/drivers/block/rsxx/core.c
> +++ b/drivers/block/rsxx/core.c
> @@ -58,7 +58,6 @@ MODULE_PARM_DESC(sync_start, "On by Default: Driver load will not complete "
> "until the card startup has completed.");
>
> static DEFINE_IDA(rsxx_disk_ida);
> -static DEFINE_SPINLOCK(rsxx_ida_lock);
>
> /* --------------------Debugfs Setup ------------------- */
>
> @@ -774,19 +773,10 @@ static int rsxx_pci_probe(struct pci_dev *dev,
> card->dev = dev;
> pci_set_drvdata(dev, card);
>
> - do {
> - if (!ida_pre_get(&rsxx_disk_ida, GFP_KERNEL)) {
> - st = -ENOMEM;
> - goto failed_ida_get;
> - }
> -
> - spin_lock(&rsxx_ida_lock);
> - st = ida_get_new(&rsxx_disk_ida, &card->disk_id);
> - spin_unlock(&rsxx_ida_lock);
> - } while (st == -EAGAIN);
> -
> - if (st)
> + st = ida_simple_get(&rsxx_disk_ida, 0, 0, GFP_KERNEL);
> + if (st < 0)
> goto failed_ida_get;
> + card->disk_id = st;
>
> st = pci_enable_device(dev);
> if (st)
> @@ -987,9 +977,7 @@ failed_request_regions:
> failed_dma_mask:
> pci_disable_device(dev);
> failed_enable:
> - spin_lock(&rsxx_ida_lock);
> - ida_remove(&rsxx_disk_ida, card->disk_id);
> - spin_unlock(&rsxx_ida_lock);
> + ida_simple_remove(&rsxx_disk_ida, card->disk_id);
> failed_ida_get:
> kfree(card);
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
--
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
next prev parent reply other threads:[~2015-10-02 10:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 18:59 [PATCH 0/5] Modify ida_* users to use ida_simple_* Lee Duncan
2015-10-01 18:59 ` [PATCH 1/5] SCSI: sd: simplify ida usage Lee Duncan
2015-10-02 10:15 ` Johannes Thumshirn
2015-10-01 18:59 ` [PATCH 2/5] block: rsxx: core: " Lee Duncan
2015-10-02 10:15 ` Johannes Thumshirn [this message]
2015-10-01 18:59 ` [PATCH 3/5] block: nvme-core: " Lee Duncan
2015-10-02 10:15 ` Johannes Thumshirn
2015-10-08 14:29 ` Keith Busch
2015-10-01 18:59 ` [PATCH 4/5] block: mtip32xx: " Lee Duncan
2015-10-02 10:16 ` Johannes Thumshirn
2015-10-01 18:59 ` [PATCH 5/5] base: soc: siplify " Lee Duncan
2015-10-02 10:16 ` Johannes Thumshirn
2015-10-05 17:44 ` [PATCH 0/5] Modify ida_* users to use ida_simple_* Tejun Heo
2015-10-05 17:52 ` James Bottomley
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