switch default_file_splice_read() to use of pipe-backed iov_iter

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we only use iov_iter_get_pages_alloc() and iov_iter_advance() -
pages are filled by kernel_readv() via a kvec array (as we used
to do all along), so iov_iter here is used only as a way of
arranging for those pages to be in pipe.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Al Viro 2016-09-23 15:34:57 -04:00

parent 82c156f853

commit 523ac9afc7

1 changed files with 40 additions and 71 deletions

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111

fs/splice.c

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