[patchlet] move kstat.pgpgin/out into submit_bh()

[Mike Galbraith]

Merry Xmas All,

read/write-page() I/O isn't visible in kstat.

--- linux-2.4.0-test13-pre4/drivers/block/ll_rw_blk.c.org       Sat Dec 23 07:08:28 
2000
+++ linux-2.4.0-test13-pre4/drivers/block/ll_rw_blk.c   Sat Dec 23 07:28:38 2000
@@ -964,6 +964,14 @@
        bh->b_rsector = bh->b_blocknr * (bh->b_size>>9);
 
        generic_make_request(rw, bh);
+
+       switch (rw) {
+               case WRITE:
+                       kstat.pgpgout++;
+                       break;
+               default:
+                       kstat.pgpgin++;
+       }
 }
 
 /*
@@ -1057,7 +1065,6 @@
                                /* Hmmph! Nothing to write */
                                goto end_io;
                        __mark_buffer_clean(bh);
-                       kstat.pgpgout++;
                        break;
 
                case READA:
@@ -1065,7 +1072,6 @@
                        if (buffer_uptodate(bh))
                                /* Hmmph! Already have it */
                                goto end_io;
-                       kstat.pgpgin++;
                        break;
                default:
                        BUG();

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