csum_and_copy_to_iter(): handle ITER_DISCARD

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Not hard to implement - we are not copying anything here, so
csum_and_memcpy() is not usable, but calculating a checksum
of source directly is trivial...

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

...

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Al Viro 2022-09-15 20:20:59 -04:00

parent 40a86061a5

commit c67f1fd2b2

1 changed files with 6 additions and 2 deletions

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lib/iov_iter.c

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