On Thu, Sep 03, 2020 at 06:54:34PM +0300, Leon Romanovsky wrote: > From: Maor Gottlieb <maorg@xxxxxxxxxx> > > Currently, sg_alloc_table_from_pages doesn't support dynamic chaining of > SG entries. Therefore it requires from user to allocate all the pages in > advance and hold them in a large buffer. Such a buffer consumes a lot of > temporary memory in HPC systems which do a very large memory registration. > > The next patches introduce API for dynamically allocation from pages and > it requires us to do the following: > * Extract the code to alloc_from_pages_common. > * Change the build of the table to iterate on the chunks and not on the > SGEs. It will allow dynamic allocation of more SGEs. > > Since sg_alloc_table_from_pages allocate exactly the number of chunks, > therefore chunks are equal to the number of SG entries. Given how few users __sg_alloc_table_from_pages has, what about just switching it to your desired calling conventions without another helper?
