diff options
| author | Ross Zwisler <ross.zwisler@linux.intel.com> | 2015-02-16 15:59:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-16 17:56:04 -0800 |
| commit | 923ae0ff9250430133b3310fe62c47538cf1cbc1 (patch) | |
| tree | 3c4194cbedbe77e719bf7c8762fba5362ec26032 /Documentation | |
| parent | 25726bc15731d42112b579cf73f30edbc43d3973 (diff) | |
ext4: add DAX functionality
This is a port of the DAX functionality found in the current version of
ext2.
[matthew.r.wilcox@intel.com: heavily tweaked]
[akpm@linux-foundation.org: remap_pages went away]
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/dax.txt | 1 | ||||
| -rw-r--r-- | Documentation/filesystems/ext4.txt | 4 |
2 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt index ebcd97f03654..be376d91d058 100644 --- a/Documentation/filesystems/dax.txt +++ b/Documentation/filesystems/dax.txt @@ -73,6 +73,7 @@ or a write()) work correctly. These filesystems may be used for inspiration: - ext2: the second extended filesystem, see Documentation/filesystems/ext2.txt +- ext4: the fourth extended filesystem, see Documentation/filesystems/ext4.txt Shortcomings diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt index 919a3293aaa4..6c0108eb0137 100644 --- a/Documentation/filesystems/ext4.txt +++ b/Documentation/filesystems/ext4.txt @@ -386,6 +386,10 @@ max_dir_size_kb=n This limits the size of directories so that any i_version Enable 64-bit inode version support. This option is off by default. +dax Use direct access (no page cache). See + Documentation/filesystems/dax.txt. Note that + this option is incompatible with data=journal. + Data Mode ========= There are 3 different data modes: |