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| author | Dan Williams <dan.j.williams@intel.com> | 2017-01-27 07:37:35 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-20 21:57:52 +0300 |
| commit | b0686260fecaa924d8eff2ace94bee70506bc308 (patch) | |
| tree | 36193b32e9f64ee93c4dd02e29da9256e8930fb7 /include/linux/blkdev.h | |
| parent | d8f07aee3f2fd959878bf614d4e984900018eb9e (diff) | |
| download | linux-b0686260fecaa924d8eff2ace94bee70506bc308.tar.xz | |
dax: introduce dax_direct_access()
Replace bdev_direct_access() with dax_direct_access() that uses
dax_device and dax_operations instead of a block_device and
block_device_operations for dax. Once all consumers of the old api have
been converted bdev_direct_access() will be deleted.
Given that block device partitioning decisions can cause dax page
alignment constraints to be violated this also introduces the
bdev_dax_pgoff() helper. It handles calculating a logical pgoff relative
to the dax_device and also checks for page alignment.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f72708399b83..612c497d1461 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1958,6 +1958,7 @@ extern int bdev_write_page(struct block_device *, sector_t, struct page *, struct writeback_control *); extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *); extern int bdev_dax_supported(struct super_block *, int); +int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff); #else /* CONFIG_BLOCK */ struct block_device; |