From 5d61e43b3975c0582003329d9de9d5e85abf5d33 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 27 Jun 2017 13:06:22 -0700 Subject: dax: remove default copy_from_iter fallback Require all dax-drivers to register a ->copy_from_iter() operation so that it is clear which dax_operations are optional and which must be implemented for filesystem-dax to operate. Cc: Gerald Schaefer Suggested-by: Christoph Hellwig Signed-off-by: Dan Williams --- drivers/s390/block/dcssblk.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/s390/block/dcssblk.c') diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 36e5280af3e4..88fa7b3f7a9d 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -43,8 +44,15 @@ static const struct block_device_operations dcssblk_devops = { .release = dcssblk_release, }; +static size_t dcssblk_dax_copy_from_iter(struct dax_device *dax_dev, + pgoff_t pgoff, void *addr, size_t bytes, struct iov_iter *i) +{ + return copy_from_iter(addr, bytes, i); +} + static const struct dax_operations dcssblk_dax_ops = { .direct_access = dcssblk_dax_direct_access, + .copy_from_iter = dcssblk_dax_copy_from_iter, }; struct dcssblk_dev_info { -- cgit v1.2.3