Hou Tao 67ceb1eca0 fat: enable .splice_write to support splice on O_DIRECT file
Now splice() on O_DIRECT-opened fat file will return -EFAULT, that is
because the default .splice_write, namely default_file_splice_write(),
will construct an ITER_KVEC iov_iter and dio_refill_pages() in dio path
can not handle it.

Fix it by implementing .splice_write through iter_file_splice_write().

Spotted by xfs-tests generic/091.

Link: http://lkml.kernel.org/r/20190210094754.56355-1-houtao1@huawei.com
Signed-off-by: Hou Tao <houtao1@huawei.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07 18:32:01 -08:00
2019-03-06 14:52:48 -08:00
2019-02-15 09:12:28 -08:00
2019-03-06 16:48:27 -08:00
2019-03-06 16:48:27 -08:00
2019-03-07 18:32:01 -08:00
2019-03-06 16:29:27 -08:00
2019-03-06 13:33:11 -08:00
2019-02-21 11:41:19 +00:00
2019-03-06 14:18:59 -08:00
2019-03-06 16:48:27 -08:00
2019-03-06 14:52:48 -08:00

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

There are several guides for kernel developers and users. These guides can
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Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
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    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.
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