On Thu, May 24, 2012 at 02:31:58PM -0700, Kent Overstreet wrote: > On Thu, May 24, 2012 at 07:57:34PM +0300, Boaz Harrosh wrote: > > How do you insure that the original bio which owns the > > bvec is not freed before the split-out bio. > > > > Perhaps calling code needs to make sure by taking an extra > > ref on the original bio, or something. If so a big fat comment > > at bio_split is do. > > Yeah, just added that. > > > > > And I understand you did not like my suggestion of negating > > the meaning of the flag, so the default is zero? > > Please say why? > > I liked it at first, but I think I prefer having the flag be set > if bio_free() must take some action; i.e. you set the flag when you > allocate bi_io_vec. Also, I think bio_alloc_bioset() getting > reimplemented is less likely than people open coding bio splitting or > something that shares bi_io_vec in the future, so it's slightlry less > likely to be used wrong this way. Even if you keep it as it is, I thought BIO_OWNS_BVEC probably communicates the idea better than BIO_HAS_BVEC. Thanks Vivek -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
