diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/iov_iter.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index e9a8fc9ee8ee..020e009d71c5 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1549,8 +1549,12 @@ size_t csum_and_copy_to_iter(const void *addr, size_t bytes, void *_csstate, __wsum sum, next; if (unlikely(iov_iter_is_discard(i))) { - WARN_ON(1); /* for now */ - return 0; + // can't use csum_memcpy() for that one - data is not copied + csstate->csum = csum_block_add(csstate->csum, + csum_partial(addr, bytes, 0), + csstate->off); + csstate->off += bytes; + return bytes; } sum = csum_shift(csstate->csum, csstate->off); |