| commit | bbab37ddc20bae4709bca8745c128c4f46fe63c5 | [log] [tgz] |
|---|---|---|
| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | Fri Jul 03 10:40:42 2015 -0400 |
| committer | Al Viro <viro@zeniv.linux.org.uk> | Sat Jul 04 15:56:57 2015 -0400 |
| tree | 8f0d8b16e1904ef668feb9b9df4f4041db557a20 | |
| parent | 872eb127e3a6cddcfca1410bb808d9b9bc773dc1 [diff] |
block: Add support for DAX reads/writes to block devices If a block device supports the ->direct_access methods, bypass the normal DIO path and use DAX to go straight to memcpy() instead of allocating a DIO and a BIO. Includes support for the DIO_SKIP_DIO_COUNT flag in DAX, as is done in do_blockdev_direct_IO(). Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>