Christoph Hellwig b4caecd480 fs: introduce f_op->mmap_capabilities for nommu mmap support
Since "BDI: Provide backing device capability information [try #3]" the
backing_dev_info structure also provides flags for the kind of mmap
operation available in a nommu environment, which is entirely unrelated
to it's original purpose.

Introduce a new nommu-only file operation to provide this information to
the nommu mmap code instead.  Splitting this from the backing_dev_info
structure allows to remove lots of backing_dev_info instance that aren't
otherwise needed, and entirely gets rid of the concept of providing a
backing_dev_info for a character device.  It also removes the need for
the mtd_inodefs filesystem.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-01-20 14:02:58 -07:00
..
2014-12-18 19:08:10 -08:00
2012-01-03 22:54:56 -05:00
2014-12-13 12:42:45 -08:00
2011-07-26 16:49:47 -07:00
2014-12-08 20:25:23 -05:00
2015-01-20 14:02:56 -07:00
2014-12-17 08:26:51 -05:00
2014-01-27 21:02:39 -08:00
2014-10-09 22:25:58 -04:00
2014-10-29 10:34:34 -04:00
2015-01-20 14:02:56 -07:00
2015-01-20 14:02:56 -07:00
2015-01-20 14:02:56 -07:00
2014-08-29 16:28:16 -07:00