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Christoph Hellwig f9f3232a7d dma-mapping: explicitly wire up ->mmap and ->get_sgtable
While the default ->mmap and ->get_sgtable implementations work for the
majority of our dma_map_ops impementations they are inherently safe
for others that don't use the page allocator or CMA and/or use their
own way of remapping not covered by the common code.  So remove the
defaults if these methods are not wired up, but instead wire up the
default implementations for all safe instances.

Fixes: e1c7e32453 ("dma-mapping: always provide the dma_map_ops based implementation")
Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-09-04 11:13:18 +02:00
arch dma-mapping: explicitly wire up ->mmap and ->get_sgtable 2019-09-04 11:13:18 +02:00
block block: add a helper function to merge the segments 2019-09-03 08:32:50 +02:00
certs
crypto
Documentation dma-mapping: fix filename references 2019-09-03 08:36:30 +02:00
drivers dma-mapping: explicitly wire up ->mmap and ->get_sgtable 2019-09-04 11:13:18 +02:00
fs This pull request contains the following fixes for UBIFS and JFFS2: 2019-08-25 11:29:27 -07:00
include dma-mapping: introduce dma_get_merge_boundary() 2019-09-03 08:33:01 +02:00
init
ipc
kernel dma-mapping: explicitly wire up ->mmap and ->get_sgtable 2019-09-04 11:13:18 +02:00
lib
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net
samples
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tools
usr
virt
.clang-format
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.gitattributes
.gitignore
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Makefile Linux 5.3-rc6 2019-08-25 12:01:23 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.