From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Huaisheng Ye Subject: [PATCH 4/5] filesystem-dax: Do not request a pointer kaddr when not required Date: Tue, 24 Jul 2018 16:45:09 +0800 Message-Id: <20180724084510.6104-5-yehs2007@zoho.com> In-Reply-To: <20180724084510.6104-1-yehs2007@zoho.com> References: <20180724084510.6104-1-yehs2007@zoho.com> Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: 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 List-ID: From: Huaisheng Ye Some functions within fs/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 --- fs/dax.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index aaec72de..abdb9e2 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -870,7 +870,6 @@ static int dax_iomap_pfn(struct iomap *iomap, loff_t pos, size_t size, { const sector_t sector = dax_iomap_sector(iomap, pos); pgoff_t pgoff; - void *kaddr; int id, rc; long length; @@ -879,7 +878,7 @@ static int dax_iomap_pfn(struct iomap *iomap, loff_t pos, size_t size, return rc; id = dax_read_lock(); length = dax_direct_access(iomap->dax_dev, pgoff, PHYS_PFN(size), - &kaddr, pfnp); + NULL, pfnp); if (length < 0) { rc = length; goto out; -- 1.8.3.1