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| author |   Dan Williams <dan.j.williams@intel.com> | 2016-01-28 20:13:39 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-01-30 13:35:31 -0800 |
| commit | 9f4736fe7ca804aa79b5916221bb13dfc6221a0f (patch) | |
| tree | 1604ce0292634817892790f0eb8cdb0e1821de1e /include/uapi/linux/fs.h | |
| parent | fs, block: force direct-I/O for dax-enabled block devices (diff) | |
| download | linux-dev-9f4736fe7ca804aa79b5916221bb13dfc6221a0f.tar.xz linux-dev-9f4736fe7ca804aa79b5916221bb13dfc6221a0f.zip | |
block: revert runtime dax control of the raw block device
Dynamically enabling DAX requires that the page cache first be flushed
and invalidated. This must occur atomically with the change of DAX mode
otherwise we confuse the fsync/msync tracking and violate data
durability guarantees. Eliminate the possibilty of DAX-disabled to
DAX-enabled transitions for now and revisit this for the next cycle.
Cc: Jan Kara <jack@suse.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/uapi/linux/fs.h')
| -rw-r--r-- | include/uapi/linux/fs.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index 41e0433b4a83..149bec83a907 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -222,7 +222,6 @@ struct fsxattr { #define BLKSECDISCARD _IO(0x12,125) #define BLKROTATIONAL _IO(0x12,126) #define BLKZEROOUT _IO(0x12,127) -#define BLKDAXSET _IO(0x12,128) #define BLKDAXGET _IO(0x12,129) #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ |