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MINOR: ncbuf: complete doc for ncb_advance()

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ncb_advance() operation may reject the operation if a too small gap is
formed in buffer front. This must be documented to avoid an issue with
it.

This should be backported up to 2.6.
This commit is contained in:
Amaury Denoyelle 2022-11-18 15:54:40 +01:00
parent 4cfdcbbd19
commit 7f0295f08a
1 changed files with 3 additions and 1 deletions
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4
src/ncbuf.c
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@ -625,7 +625,9 @@ enum ncb_ret ncb_add(struct ncbuf *buf, ncb_sz_t off,
* will be lost while some space will be formed at the end to be able to insert
* new data.
*
* Returns NCB_RET_OK on success.
* Returns NCB_RET_OK on success. It may return NCB_RET_GAP_SIZE if operation
* is rejected due to the formation of a too small gap in front. If advance is
* done only inside a data block it is guaranteed to succeed.
*/
enum ncb_ret ncb_advance(struct ncbuf *buf, ncb_sz_t adv)
{