On Mon, Aug 23, 2021 at 02:09:37PM +0300, Maor Gottlieb wrote:

On 8/20/2021 6:54 PM, Jason Gunthorpe wrote:

quoted

On Thu, Jul 29, 2021 at 12:39:12PM +0300, Leon Romanovsky wrote:

quoted

+/**
+ * __sg_free_table - Free a previously mapped sg table
+ * @table:	The sg table header to use
+ * @max_ents:	The maximum number of entries per single scatterlist
+ * @total_ents:	The total number of entries in the table
+ * @nents_first_chunk: Number of entries int the (preallocated) first
+ *                     scatterlist chunk, 0 means no such preallocated
+ *                     first chunk
+ * @free_fn:	Free function
+ *
+ *  Description:
+ *    Free an sg table previously allocated and setup with
+ *    __sg_alloc_table().  The @max_ents value must be identical to
+ *    that previously used with __sg_alloc_table().
+ *
+ **/
+void __sg_free_table(struct sg_table *table, unsigned int max_ents,
+		     unsigned int nents_first_chunk, sg_free_fn *free_fn)
+{
+	sg_free_table_entries(table, max_ents, nents_first_chunk, free_fn,
+			      table->orig_nents);
+}
  EXPORT_SYMBOL(__sg_free_table);

This is getting a bit indirect, there is only one caller of
__sg_free_table() in sg_pool.c, so may as well just export
sg_free_table_entries have have it use that directly.

So I can just extend __sg_free_table to get number of entries. What do you
think?

Isn't the point here that different paths to __sg_free_table require
different entries? What do you mean?

Jason