mempool: fix search of maximum contiguous pages

paddr[i] + pg_sz always points to the start physical address of the
2nd page after pddr[i], so only up to 2 pages can be combinded to
be used. With this revision, more than 2 pages can be used.

Fixes: 84121f197187 ("mempool: store memory chunks in a list")

Signed-off-by: Wei Dai <wei.dai@intel.com>
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index 71017e1..e94e56f 100644 (file)
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -428,7 +428,7 @@ rte_mempool_populate_phys_tab(struct rte_mempool *mp, char *vaddr,
 
                /* populate with the largest group of contiguous pages */
                for (n = 1; (i + n) < pg_num &&
-                            paddr[i] + pg_sz == paddr[i+n]; n++)
+                            paddr[i + n - 1] + pg_sz == paddr[i + n]; n++)
                        ;
 
                ret = rte_mempool_populate_phys(mp, vaddr + i * pg_sz,