XXXX give me a better summary

@@ -2024,13 +2024,14 @@
         /*
          * Only reason putapage is going to give us SE_NOSWAP as error
          * is when we ask a page to be written to physical backing store
          * and there is none. Ignore this because we might be dealing
          * with a swap page which does not have any backing store
-         * on disk. In any other case we won't get this error over here.
+         * on disk, though the newer SE_NODEV error should cover that.
+         * In any other case we won't get this error over here.
          */
-        if (err == SE_NOSWAP)
+        if (err == SE_NOSWAP || err == SE_NODEV)
                 err = 0;
         return (err);
 }
 
 long tmp_putpagecnt, tmp_pagespushed;

@@ -2089,19 +2090,19 @@
         io_off = pp_off;
         io_len = pp_len;
         err = swap_newphysname(vp, offset, &io_off, &io_len, &pvp, &pstart);
         ASSERT(err != SE_NOANON); /* anon slot must have been filled */
         if (err) {
-                pvn_write_done(pplist, B_ERROR | B_WRITE | flags);
+                ASSERT(err == SE_NOSWAP || err == SE_NODEV);
+                pvn_write_done(pplist, (err == SE_NODEV ? 0 : B_ERROR) |
+                    B_WRITE | flags);
                 /*
                  * If this routine is called as a result of segvn_sync
                  * operation and we have no physical swap then we can get an
                  * error here. In such case we would return SE_NOSWAP as error.
-                 * At this point, we expect only SE_NOSWAP.
                  */
-                ASSERT(err == SE_NOSWAP);
-                if (flags & B_INVAL)
+                if ((flags & B_INVAL) && err == SE_NOSWAP)
                         err = ENOMEM;
                 goto out;
         }
         ASSERT(pp_off <= io_off && io_off + io_len <= pp_off + pp_len);
         ASSERT(io_off <= offset && offset < io_off + io_len);

@@ -2141,11 +2142,11 @@
                 if (lenp)
                         *lenp = io_len;
                 tmp_putpagecnt++;
                 tmp_pagespushed += btop(io_len);
         }
-        if (err && err != ENOMEM && err != SE_NOSWAP)
+        if (err && err != ENOMEM && err != SE_NOSWAP && err != SE_NODEV)
                 cmn_err(CE_WARN, "tmp_putapage: err %d\n", err);
         return (err);
 }
 
 /* ARGSUSED */