linux-toradex.git/include/linux/iomap.h, branch v4.12

ext2, ext4, xfs: retrieve dax_device for iomap operations

2017-04-25T20:20:46+00:00

In preparation for converting fs/dax.c to use dax_direct_access()
instead of bdev_direct_access(), add the plumbing to retrieve the
dax_device associated with a given block_device.

Signed-off-by: Dan Williams

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-25T01:46:54+00:00

->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
take a vma and vmf parameter when the vma already resides in vmf.

Remove the vma parameter to simplify things.

[arnd@arndb.de: fix ARM build]
  Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang 
Signed-off-by: Arnd Bergmann 
Reviewed-by: Ross Zwisler 
Cc: Theodore Ts'o 
Cc: Darrick J. Wong 
Cc: Matthew Wilcox 
Cc: Dave Hansen 
Cc: Christoph Hellwig 
Cc: Jan Kara 
Cc: Dan Williams 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

iomap: constify struct iomap_ops

2017-01-31T00:32:25+00:00

Signed-off-by: Christoph Hellwig 
Reviewed-by: Darrick J. Wong 
Signed-off-by: Darrick J. Wong

iomap: implement direct I/O

2016-11-30T03:36:01+00:00

This adds a full fledget direct I/O implementation using the iomap
interface. Full fledged in this case means all features are supported:
AIO, vectored I/O, any iov_iter type including kernel pointers, bvecs
and pipes, support for hole filling and async apending writes.  It does
not mean supporting all the warts of the old generic code.  We expect
i_rwsem to be held over the duration of the call, and we expect to
maintain i_dio_count ourselves, and we pass on any kinds of mapping
to the file system for now.

The algorithm used is very simple: We use iomap_apply to iterate over
the range of the I/O, and then we use the new bio_iov_iter_get_pages
helper to lock down the user range for the size of the extent.
bio_iov_iter_get_pages can currently lock down twice as many pages as
the old direct I/O code did, which means that we will have a better
batch factor for everything but overwrites of badly fragmented files.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Kent Overstreet 
Tested-by: Jens Axboe 
Reviewed-by: Darrick J. Wong 
Signed-off-by: Dave Chinner

Merge branch 'xfs-4.10-misc-fixes-2' into iomap-4.10-directio

2016-11-30T01:49:38+00:00

dax: Introduce IOMAP_FAULT flag

2016-11-09T23:26:50+00:00

Introduce a flag telling iomap operations whether they are handling a
fault or other IO. That may influence behavior wrt inode size and
similar things.

Signed-off-by: Jan Kara 
Reviewed-by: Dave Chinner 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Dave Chinner

iomap: add IOMAP_REPORT

2016-10-20T04:51:28+00:00

This allows the file system to tell a FIEMAP from a read operation, and thus
avoids the need to report flags that aren't actually used in the read path.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Darrick J. Wong 
Reviewed-by: Brian Foster 
Signed-off-by: Dave Chinner

Merge branch 'iomap-4.9-dax' into for-next

2016-10-02T22:53:59+00:00

iomap: add IOMAP_F_NEW flag

2016-09-19T01:24:37+00:00

Signed-off-by: Christoph Hellwig 
Reviewed-by: Ross Zwisler 
Signed-off-by: Dave Chinner

iomap: add a flag to report shared extents

2016-09-19T00:13:02+00:00

Signed-off-by: Darrick J. Wong 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Dave Chinner