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| author | Dan Williams <dan.j.williams@intel.com> | 2017-01-27 23:13:15 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-25 22:20:46 +0200 |
| commit | a41fe02b6bba853a29c864d00fd161bbe6cfc715 (patch) | |
| tree | 7060e9ed2234c8b6b2cc99523f18ed66bddba33a /include | |
| parent | ext2, ext4, xfs: retrieve dax_device for iomap operations (diff) | |
| download | linux-a41fe02b6bba853a29c864d00fd161bbe6cfc715.tar.xz linux-a41fe02b6bba853a29c864d00fd161bbe6cfc715.zip | |
Revert "block: use DAX for partition table reads"
commit d1a5f2b4d8a1 ("block: use DAX for partition table reads") was
part of a stalled effort to allow dax mappings of block devices. Since
then the device-dax mechanism has filled the role of dax-mapping static
device ranges.
Now that we are moving ->direct_access() from a block_device operation
to a dax_inode operation we would need block devices to map and carry
their own dax_inode reference.
Unless / until we decide to revive dax mapping of raw block devices
through the dax_inode scheme, there is no need to carry
read_dax_sector(). Its removal in turn allows for the removal of
bdev_direct_access() and should have been included in commit
223757016837 ("block_dev: remove DAX leftovers").
Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/dax.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h index 7e62e280c11f..0d0d890f9186 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -70,15 +70,9 @@ void dax_wake_mapping_entry_waiter(struct address_space *mapping, pgoff_t index, void *entry, bool wake_all); #ifdef CONFIG_FS_DAX -struct page *read_dax_sector(struct block_device *bdev, sector_t n); int __dax_zero_page_range(struct block_device *bdev, sector_t sector, unsigned int offset, unsigned int length); #else -static inline struct page *read_dax_sector(struct block_device *bdev, - sector_t n) -{ - return ERR_PTR(-ENXIO); -} static inline int __dax_zero_page_range(struct block_device *bdev, sector_t sector, unsigned int offset, unsigned int length) { |