From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Mon, 21 Dec 2015 18:32:02 +0100 From: Jan Kara Subject: Re: [PATCH v5 5/7] ext2: call dax_pfn_mkwrite() for DAX fsync/msync Message-ID: <20151221173202.GB7030@quack.suse.cz> References: <1450502540-8744-1-git-send-email-ross.zwisler@linux.intel.com> <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> Sender: owner-linux-mm@kvack.org To: Ross Zwisler Cc: linux-kernel@vger.kernel.org, "H. Peter Anvin" , "J. Bruce Fields" , Theodore Ts'o , Alexander Viro , Andreas Dilger , Dave Chinner , Ingo Molnar , Jan Kara , Jeff Layton , Matthew Wilcox , Thomas Gleixner , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, x86@kernel.org, xfs@oss.sgi.com, Andrew Morton , Dan Williams , Matthew Wilcox , Dave Hansen List-ID: On Fri 18-12-15 22:22:18, Ross Zwisler wrote: > To properly support the new DAX fsync/msync infrastructure filesystems > need to call dax_pfn_mkwrite() so that DAX can track when user pages are > dirtied. The patch looks good to me. You can add: Reviewed-by: Jan Kara Honza > > Signed-off-by: Ross Zwisler > --- > fs/ext2/file.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/ext2/file.c b/fs/ext2/file.c > index 11a42c5..2c88d68 100644 > --- a/fs/ext2/file.c > +++ b/fs/ext2/file.c > @@ -102,8 +102,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > { > struct inode *inode = file_inode(vma->vm_file); > struct ext2_inode_info *ei = EXT2_I(inode); > - int ret = VM_FAULT_NOPAGE; > loff_t size; > + int ret; > > sb_start_pagefault(inode->i_sb); > file_update_time(vma->vm_file); > @@ -113,6 +113,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; > if (vmf->pgoff >= size) > ret = VM_FAULT_SIGBUS; > + else > + ret = dax_pfn_mkwrite(vma, vmf); > > up_read(&ei->dax_sem); > sb_end_pagefault(inode->i_sb); > -- > 2.5.0 > > -- Jan Kara SUSE Labs, CR -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751727AbbLURcK (ORCPT ); Mon, 21 Dec 2015 12:32:10 -0500 Received: from mx2.suse.de ([195.135.220.15]:47152 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751369AbbLURcF (ORCPT ); Mon, 21 Dec 2015 12:32:05 -0500 Date: Mon, 21 Dec 2015 18:32:02 +0100 From: Jan Kara To: Ross Zwisler Cc: linux-kernel@vger.kernel.org, "H. Peter Anvin" , "J. Bruce Fields" , "Theodore Ts'o" , Alexander Viro , Andreas Dilger , Dave Chinner , Ingo Molnar , Jan Kara , Jeff Layton , Matthew Wilcox , Thomas Gleixner , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@ml01.01.org, x86@kernel.org, xfs@oss.sgi.com, Andrew Morton , Dan Williams , Matthew Wilcox , Dave Hansen Subject: Re: [PATCH v5 5/7] ext2: call dax_pfn_mkwrite() for DAX fsync/msync Message-ID: <20151221173202.GB7030@quack.suse.cz> References: <1450502540-8744-1-git-send-email-ross.zwisler@linux.intel.com> <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 18-12-15 22:22:18, Ross Zwisler wrote: > To properly support the new DAX fsync/msync infrastructure filesystems > need to call dax_pfn_mkwrite() so that DAX can track when user pages are > dirtied. The patch looks good to me. You can add: Reviewed-by: Jan Kara Honza > > Signed-off-by: Ross Zwisler > --- > fs/ext2/file.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/ext2/file.c b/fs/ext2/file.c > index 11a42c5..2c88d68 100644 > --- a/fs/ext2/file.c > +++ b/fs/ext2/file.c > @@ -102,8 +102,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > { > struct inode *inode = file_inode(vma->vm_file); > struct ext2_inode_info *ei = EXT2_I(inode); > - int ret = VM_FAULT_NOPAGE; > loff_t size; > + int ret; > > sb_start_pagefault(inode->i_sb); > file_update_time(vma->vm_file); > @@ -113,6 +113,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; > if (vmf->pgoff >= size) > ret = VM_FAULT_SIGBUS; > + else > + ret = dax_pfn_mkwrite(vma, vmf); > > up_read(&ei->dax_sem); > sb_end_pagefault(inode->i_sb); > -- > 2.5.0 > > -- Jan Kara SUSE Labs, CR From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Subject: Re: [PATCH v5 5/7] ext2: call dax_pfn_mkwrite() for DAX fsync/msync Date: Mon, 21 Dec 2015 18:32:02 +0100 Message-ID: <20151221173202.GB7030@quack.suse.cz> References: <1450502540-8744-1-git-send-email-ross.zwisler@linux.intel.com> <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-kernel@vger.kernel.org, "H. Peter Anvin" , "J. Bruce Fields" , Theodore Ts'o , Alexander Viro , Andreas Dilger , Dave Chinner , Ingo Molnar , Jan Kara , Jeff Layton , Matthew Wilcox , Thomas Gleixner , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, x86@kernel.org, xfs@oss.sgi.com, Andrew Morton , Dan Williams , Matthew Wilcox , Dave Hansen To: Ross Zwisler Return-path: Received: from mx2.suse.de ([195.135.220.15]:47152 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751369AbbLURcF (ORCPT ); Mon, 21 Dec 2015 12:32:05 -0500 Content-Disposition: inline In-Reply-To: <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Fri 18-12-15 22:22:18, Ross Zwisler wrote: > To properly support the new DAX fsync/msync infrastructure filesystems > need to call dax_pfn_mkwrite() so that DAX can track when user pages are > dirtied. The patch looks good to me. You can add: Reviewed-by: Jan Kara Honza > > Signed-off-by: Ross Zwisler > --- > fs/ext2/file.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/ext2/file.c b/fs/ext2/file.c > index 11a42c5..2c88d68 100644 > --- a/fs/ext2/file.c > +++ b/fs/ext2/file.c > @@ -102,8 +102,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > { > struct inode *inode = file_inode(vma->vm_file); > struct ext2_inode_info *ei = EXT2_I(inode); > - int ret = VM_FAULT_NOPAGE; > loff_t size; > + int ret; > > sb_start_pagefault(inode->i_sb); > file_update_time(vma->vm_file); > @@ -113,6 +113,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; > if (vmf->pgoff >= size) > ret = VM_FAULT_SIGBUS; > + else > + ret = dax_pfn_mkwrite(vma, vmf); > > up_read(&ei->dax_sem); > sb_end_pagefault(inode->i_sb); > -- > 2.5.0 > > -- Jan Kara SUSE Labs, CR From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id 0C1C87F37 for ; Mon, 21 Dec 2015 11:32:09 -0600 (CST) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by relay3.corp.sgi.com (Postfix) with ESMTP id A005DAC002 for ; Mon, 21 Dec 2015 09:32:08 -0800 (PST) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by cuda.sgi.com with ESMTP id BsdSPvm6hAM6dean (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 21 Dec 2015 09:32:05 -0800 (PST) Date: Mon, 21 Dec 2015 18:32:02 +0100 From: Jan Kara Subject: Re: [PATCH v5 5/7] ext2: call dax_pfn_mkwrite() for DAX fsync/msync Message-ID: <20151221173202.GB7030@quack.suse.cz> References: <1450502540-8744-1-git-send-email-ross.zwisler@linux.intel.com> <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1450502540-8744-6-git-send-email-ross.zwisler@linux.intel.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Ross Zwisler Cc: Dave Hansen , "J. Bruce Fields" , linux-mm@kvack.org, Andreas Dilger , "H. Peter Anvin" , Jeff Layton , Dan Williams , linux-nvdimm@lists.01.org, x86@kernel.org, Ingo Molnar , Matthew Wilcox , linux-ext4@vger.kernel.org, xfs@oss.sgi.com, Alexander Viro , Thomas Gleixner , Theodore Ts'o , linux-kernel@vger.kernel.org, Jan Kara , linux-fsdevel@vger.kernel.org, Andrew Morton , Matthew Wilcox On Fri 18-12-15 22:22:18, Ross Zwisler wrote: > To properly support the new DAX fsync/msync infrastructure filesystems > need to call dax_pfn_mkwrite() so that DAX can track when user pages are > dirtied. The patch looks good to me. You can add: Reviewed-by: Jan Kara Honza > > Signed-off-by: Ross Zwisler > --- > fs/ext2/file.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/ext2/file.c b/fs/ext2/file.c > index 11a42c5..2c88d68 100644 > --- a/fs/ext2/file.c > +++ b/fs/ext2/file.c > @@ -102,8 +102,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > { > struct inode *inode = file_inode(vma->vm_file); > struct ext2_inode_info *ei = EXT2_I(inode); > - int ret = VM_FAULT_NOPAGE; > loff_t size; > + int ret; > > sb_start_pagefault(inode->i_sb); > file_update_time(vma->vm_file); > @@ -113,6 +113,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, > size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; > if (vmf->pgoff >= size) > ret = VM_FAULT_SIGBUS; > + else > + ret = dax_pfn_mkwrite(vma, vmf); > > up_read(&ei->dax_sem); > sb_end_pagefault(inode->i_sb); > -- > 2.5.0 > > -- Jan Kara SUSE Labs, CR _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs