From: Huaisheng Ye <yehs2007@zoho.com>
To: linux-nvdimm@lists.01.org, dan.j.williams@intel.com
Cc: ross.zwisler@linux.intel.com, willy@infradead.org,
vishal.l.verma@intel.com, dave.jiang@intel.com,
schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com,
viro@zeniv.linux.org.uk, martin.petersen@oracle.com,
axboe@kernel.dk, gregkh@linuxfoundation.org,
bart.vanassche@wdc.com, jack@suse.cz,
linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
linux-fsdevel@vger.kernel.org, chengnt@lenovo.com,
Huaisheng Ye <yehs1@lenovo.com>
Subject: [PATCH 5/5] dax/super: Do not request a pointer kaddr when not required
Date: Tue, 24 Jul 2018 16:45:10 +0800 [thread overview]
Message-ID: <20180724084510.6104-6-yehs2007@zoho.com> (raw)
In-Reply-To: <20180724084510.6104-1-yehs2007@zoho.com>
From: Huaisheng Ye <yehs1@lenovo.com>
Some functions within driver/dax don't need to get pointer kaddr from
direct_access. In support of allowing memmap initialization to run in
the background elide requests for pointer kaddr when not required.
Signed-off-by: Huaisheng Ye <yehs1@lenovo.com>
---
drivers/dax/super.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 2b2332b..fad68d2 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -88,7 +88,6 @@ int __bdev_dax_supported(struct super_block *sb, int blocksize)
struct dax_device *dax_dev;
pgoff_t pgoff;
int err, id;
- void *kaddr;
pfn_t pfn;
long len;
@@ -113,7 +112,7 @@ int __bdev_dax_supported(struct super_block *sb, int blocksize)
}
id = dax_read_lock();
- len = dax_direct_access(dax_dev, pgoff, 1, &kaddr, &pfn);
+ len = dax_direct_access(dax_dev, pgoff, 1, NULL, &pfn);
dax_read_unlock(id);
put_dax(dax_dev);
--
1.8.3.1
next prev parent reply other threads:[~2018-07-24 8:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-24 8:45 [PATCH 0/5] Do not request a pointer kaddr when not required Huaisheng Ye
2018-07-24 8:45 ` [PATCH 1/5] libnvdimm, pmem: Allow a NULL-kaddr to ->direct_access() Huaisheng Ye
2018-07-24 8:45 ` [PATCH 2/5] tools/testing/nvdimm: " Huaisheng Ye
2018-07-24 8:45 ` [PATCH 3/5] s390, dcssblk: " Huaisheng Ye
2018-07-24 8:53 ` Christian Borntraeger
2018-07-24 9:46 ` [External] " Huaisheng HS1 Ye
2018-07-24 11:16 ` Christian Borntraeger
2018-07-24 14:28 ` Huaisheng HS1 Ye
2018-07-24 8:45 ` [PATCH 4/5] filesystem-dax: Do not request a pointer kaddr when not required Huaisheng Ye
2018-07-24 8:45 ` Huaisheng Ye [this message]
2018-07-24 14:50 ` [PATCH 0/5] " Ross Zwisler
2018-07-24 15:41 ` [External] " Huaisheng HS1 Ye
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