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();