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authorChristoph Hellwig <hch@lst.de>2016-09-19 11:24:49 +1000
committerDave Chinner <david@fromorbit.com>2016-09-19 11:24:49 +1000
commitb0d5e82fcf8249b5aca52d235c1cfabd68b253e8 (patch)
tree2339be43d048f78c3aac15fbf1b3bd823f3d73b6 /fs/dax.c
parent1aaba0958ed371bd121751d74d98f2a76395edad (diff)
downloadlinux-b0d5e82fcf8249b5aca52d235c1cfabd68b253e8.tar.bz2
dax: don't pass buffer_head to copy_user_dax
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> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/dax.c')
-rw-r--r--fs/dax.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/dax.c b/fs/dax.c
index 98463bb9827c..84343ce8be70 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)