From: Andrew Morton <[EMAIL PROTECTED]>
Wire up read accounting for block devices, within submit_bio().
Cc: Jay Lan <[EMAIL PROTECTED]>
Cc: Shailabh Nagar <[EMAIL PROTECTED]>
Cc: Balbir Singh <[EMAIL PROTECTED]>
Cc: Chris Sturtivant <[EMAIL PROTECTED]>
Cc: Tony Ernst <[EMAIL PROTECTED]>
Cc: Guillaume Thouvenin <[EMAIL PROTECTED]>
Cc: David Wright <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
block/ll_rw_blk.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff -puN block/ll_rw_blk.c~io-accounting-read-accounting-2 block/ll_rw_blk.c
--- a/block/ll_rw_blk.c~io-accounting-read-accounting-2
+++ a/block/ll_rw_blk.c
@@ -25,6 +25,7 @@
#include <linux/slab.h>
#include <linux/swap.h>
#include <linux/writeback.h>
+#include <linux/task_io_accounting_ops.h>
#include <linux/interrupt.h>
#include <linux/cpu.h>
#include <linux/blktrace_api.h>
@@ -3235,10 +3236,12 @@ void submit_bio(int rw, struct bio *bio)
BIO_BUG_ON(!bio->bi_size);
BIO_BUG_ON(!bio->bi_io_vec);
bio->bi_rw |= rw;
- if (rw & WRITE)
+ if (rw & WRITE) {
count_vm_events(PGPGOUT, count);
- else
+ } else {
+ task_io_account_read(bio->bi_size);
count_vm_events(PGPGIN, count);
+ }
if (unlikely(block_dump)) {
char b[BDEVNAME_SIZE];
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
