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iov_buf: Add an explaining comment

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Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Volker Lendecke 2015-02-16 13:26:29 +00:00 committed by Jeremy Allison
parent 0a20ffb17d
commit 6e94f695c4
1 changed files with 4 additions and 0 deletions
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4
lib/util/iov_buf.c
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@ -75,6 +75,10 @@ bool iov_advance(struct iovec **iov, int *iovcnt, size_t n)
/*
* Skip 0-length iovec's
*
* There might be empty buffers at the end of iov. Next time we do a
* readv/writev based on this iov would give 0 transferred bytes, also
* known as EPIPE. So we need to be careful discarding them.
*/
while ((cnt > 0) && (v->iov_len == 0)) {