Feature #9954
Updated by Sage Weil over 9 years ago
Add a method to assure that an extent in a bufferlist is contigous. Something like
bufferlist bl;
...
char *ptr = bl.make_contiguous(offset, length);
If it is already contiguous, return a pointer to the position at offset.
If it is not contiguous, reallocate that range of the buffer (or do a full rebuild()). Then return a pointer to the offset.
After this call, it's safe to use ptr directly for up to length bytes from the start position.