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From: Christoph Hellwig <hch@lst.de>
To: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-nvdimm@ml01.01.org
Cc: ross.zwisler@linux.intel.com
Subject: [PATCH 04/12] dax: don't pass buffer_head to copy_user_dax
Date: Wed, 14 Sep 2016 12:01:23 +0200	[thread overview]
Message-ID: <1473847291-18913-5-git-send-email-hch@lst.de> (raw)
In-Reply-To: <1473847291-18913-1-git-send-email-hch@lst.de>

This way we can use this helper for the iomap based DAX implementation
as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
 fs/dax.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/dax.c b/fs/dax.c
index 98463bb..84343ce 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -580,14 +580,13 @@ static int dax_load_hole(struct address_space *mapping, void *entry,
 	return VM_FAULT_LOCKED;
 }
 
-static int copy_user_bh(struct page *to, struct inode *inode,
-		struct buffer_head *bh, unsigned long vaddr)
+static int copy_user_dax(struct block_device *bdev, sector_t sector, size_t size,
+		struct page *to, unsigned long vaddr)
 {
 	struct blk_dax_ctl dax = {
-		.sector = to_sector(bh, inode),
-		.size = bh->b_size,
+		.sector = sector,
+		.size = size,
 	};
-	struct block_device *bdev = bh->b_bdev;
 	void *vto;
 
 	if (dax_map_atomic(bdev, &dax) < 0)
@@ -867,7 +866,8 @@ int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
 	if (vmf->cow_page) {
 		struct page *new_page = vmf->cow_page;
 		if (buffer_written(&bh))
-			error = copy_user_bh(new_page, inode, &bh, vaddr);
+			error = copy_user_dax(bh.b_bdev, to_sector(&bh, inode),
+					bh.b_size, new_page, vaddr);
 		else
 			clear_user_highpage(new_page, vaddr);
 		if (error)
-- 
2.1.4


  parent reply	other threads:[~2016-09-14 10:01 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-14 10:01 iomap based DAX path V2 Christoph Hellwig
2016-09-14 10:01 ` Christoph Hellwig
     [not found] ` <1473847291-18913-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 10:01   ` [PATCH 01/12] iomap: add IOMAP_F_NEW flag Christoph Hellwig
2016-09-14 10:01     ` Christoph Hellwig
2016-09-14 10:01   ` [PATCH 02/12] iomap: expose iomap_apply outside iomap.c Christoph Hellwig
2016-09-14 10:01     ` Christoph Hellwig
2016-09-14 10:01   ` [PATCH 12/12] ext2: use iomap to implement DAX Christoph Hellwig
2016-09-14 10:01     ` Christoph Hellwig
     [not found]     ` <1473847291-18913-13-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 22:51       ` Ross Zwisler
2016-09-14 22:51         ` Ross Zwisler
2016-09-15  5:14         ` Christoph Hellwig
2016-09-14 10:01 ` [PATCH 03/12] dax: don't pass buffer_head to dax_insert_mapping Christoph Hellwig
2016-09-14 10:01 ` Christoph Hellwig [this message]
2016-09-14 10:01 ` [PATCH 05/12] dax: provide an iomap based dax read/write path Christoph Hellwig
     [not found]   ` <1473847291-18913-6-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 17:26     ` Ross Zwisler
2016-09-14 17:26       ` Ross Zwisler
2016-09-14 10:01 ` [PATCH 06/12] dax: provide an iomap based fault handler Christoph Hellwig
2016-09-14 17:27   ` Ross Zwisler
     [not found]     ` <20160914172717.GB30852-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-09-15  5:13       ` Christoph Hellwig
2016-09-15  5:13         ` Christoph Hellwig
2016-09-14 10:01 ` [PATCH 07/12] xfs: fix locking for DAX writes Christoph Hellwig
2016-09-14 10:01 ` [PATCH 08/12] xfs: take the ilock shared if possible in xfs_file_iomap_begin Christoph Hellwig
2016-09-14 10:01 ` [PATCH 09/12] xfs: refactor xfs_setfilesize Christoph Hellwig
2016-09-14 10:01 ` [PATCH 10/12] xfs: use iomap to implement DAX Christoph Hellwig
     [not found]   ` <1473847291-18913-11-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 17:32     ` Ross Zwisler
2016-09-14 17:32       ` Ross Zwisler
     [not found]       ` <20160914173247.GC30852-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-09-15  5:14         ` Christoph Hellwig
2016-09-15  5:14           ` Christoph Hellwig
2016-09-15  5:29   ` Darrick J. Wong
     [not found]     ` <20160915052933.GH9314-PTl6brltDGh4DFYR7WNSRA@public.gmane.org>
2016-09-15  6:43       ` Christoph Hellwig
2016-09-15  6:43         ` Christoph Hellwig
2016-09-14 10:01 ` [PATCH 11/12] ext2: stop passing buffer_head to ext2_get_blocks Christoph Hellwig
     [not found]   ` <1473847291-18913-12-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-14 22:42     ` Ross Zwisler
2016-09-14 22:42       ` Ross Zwisler
2016-09-16 11:27 iomap based DAX path V3 Christoph Hellwig
     [not found] ` <1474025234-13804-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-09-16 11:27   ` [PATCH 04/12] dax: don't pass buffer_head to copy_user_dax Christoph Hellwig
2016-09-16 11:27     ` Christoph Hellwig

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