linux-kernel - [PATCH 15/17] Update the NVMe SSD driver to use ida helper functions.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <7aa6d6793c6771b69a9cf093e80937669f5fcb4e.1442263512.git.lduncan@suse.com>
Date:	Tue, 15 Sep 2015 09:46:15 -0700
From:	Lee Duncan <lduncan@...e.com>
To:	<linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Cc:	Hannes Reinecke <hare@...e.com>,
	Johannes Thumshirn <jthumshirn@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	Lee Duncan <lduncan@...e.com>,
	Matthew Wilcox <willy@...ux.intel.com>
Subject: [PATCH 15/17] Update the NVMe SSD driver to use ida helper functions.

Signed-off-by: Lee Duncan <lduncan@...e.com>
---
 drivers/block/nvme-core.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index d1d6141920d3..ab13833d4fde 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -2715,15 +2715,7 @@ static int nvme_set_instance(struct nvme_dev *dev)
 {
 	int instance, error;
 
-	do {
-		if (!ida_pre_get(&nvme_instance_ida, GFP_KERNEL))
-			return -ENODEV;
-
-		spin_lock(&dev_list_lock);
-		error = ida_get_new(&nvme_instance_ida, &instance);
-		spin_unlock(&dev_list_lock);
-	} while (error == -EAGAIN);
-
+	error = ida_get_index(&nvme_instance_ida, &dev_list_lock, &instance);
 	if (error)
 		return -ENODEV;
 
@@ -2733,9 +2725,7 @@ static int nvme_set_instance(struct nvme_dev *dev)
 
 static void nvme_release_instance(struct nvme_dev *dev)
 {
-	spin_lock(&dev_list_lock);
-	ida_remove(&nvme_instance_ida, dev->instance);
-	spin_unlock(&dev_list_lock);
+	ida_put_index(&nvme_instance_ida, &dev_list_lock, dev->instance);
 }
 
 static void nvme_free_namespaces(struct nvme_dev *dev)
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/