dax: Allow dax_iomap_fault() to return pfn
authorJan Kara <jack@suse.cz>
Wed, 1 Nov 2017 15:36:39 +0000 (16:36 +0100)
committerDan Williams <dan.j.williams@intel.com>
Fri, 3 Nov 2017 13:26:24 +0000 (06:26 -0700)
commit9a0dd42251439de635088b97533109a935864a84
tree8409c4579c18ccf3c9c05ec7dd651c46683fca51
parentcec04e8c825eaa5a4bb1a3ce0d3784628e965196
dax: Allow dax_iomap_fault() to return pfn

For synchronous page fault dax_iomap_fault() will need to return PFN
which will then need to be inserted into page tables after fsync()
completes. Add necessary parameter to dax_iomap_fault().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
fs/dax.c
fs/ext2/file.c
fs/ext4/file.c
fs/xfs/xfs_file.c
include/linux/dax.h