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Commit faccbd4b authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
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[PATCH] io-accounting: read accounting 



Wire up read accounting for block devices, within submit_bio().

Cc: Jay Lan <jlan@sgi.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Chris Sturtivant <csturtiv@sgi.com>
Cc: Tony Ernst <tee@sgi.com>
Cc: Guillaume Thouvenin <guillaume.thouvenin@bull.net>
Cc: David Wright <daw@sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent e08748ce

block/ll_rw_blk.c

+5 −2
Original line number Diff line number Diff line
@@ -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];