No functional changet, but this will allow for a tighter integration
with the iomap code, including possible passing the partition offset
in the iomap in the future. For now it mostly avoids growing more
callers outside of fs/dax.c.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/dax/super.c | 14 --------------
fs/dax.c | 13 +++++++++++++
include/linux/dax.h | 1 -
3 files changed, 13 insertions(+), 15 deletions(-)
diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 803942586d1b6..c0910687fbcb2 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -67,20 +67,6 @@ void dax_remove_host(struct gendisk *disk)
}
EXPORT_SYMBOL_GPL(dax_remove_host);
-int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size,
- pgoff_t *pgoff)
-{
- sector_t start_sect = bdev ? get_start_sect(bdev) : 0;
- phys_addr_t phys_off = (start_sect + sector) * 512;
-
- if (pgoff)
- *pgoff = PHYS_PFN(phys_off);
- if (phys_off % PAGE_SIZE || size % PAGE_SIZE)
- return -EINVAL;
- return 0;
-}
-EXPORT_SYMBOL(bdev_dax_pgoff);
-
/**
* dax_get_by_host() - temporary lookup mechanism for filesystem-dax
* @bdev: block device to find a dax_device for
diff --git a/fs/dax.c b/fs/dax.c
index 4e3e5a283a916..eb715363fd667 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -709,6 +709,19 @@ int dax_invalidate_mapping_entry_sync(struct address_space *mapping,
return __dax_invalidate_entry(mapping, index, false);
}
+static int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size,
+ pgoff_t *pgoff)
+{
+ sector_t start_sect = bdev ? get_start_sect(bdev) : 0;
+ phys_addr_t phys_off = (start_sect + sector) * 512;
+
+ if (pgoff)
+ *pgoff = PHYS_PFN(phys_off);
+ if (phys_off % PAGE_SIZE || size % PAGE_SIZE)
+ return -EINVAL;
+ return 0;
+}
+
static int copy_cow_page_dax(struct block_device *bdev, struct dax_device *dax_dev,
sector_t sector, struct page *to, unsigned long vaddr)
{
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 439c3c70e347b..324363b798ecd 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -107,7 +107,6 @@ static inline bool daxdev_mapping_supported(struct vm_area_struct *vma,
#endif
struct writeback_control;
-int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff);
#if IS_ENABLED(CONFIG_FS_DAX)
int dax_add_host(struct dax_device *dax_dev, struct gendisk *disk);
void dax_remove_host(struct gendisk *disk);
--
2.30.2
--
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