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cfq-iosched: fix rcu freeing of cfq io contexts

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SLAB_DESTROY_BY_RCU is not a direct substitute for normal call_rcu()
freeing, since it'll page freeing but NOT object freeing. So change
cfq to do the freeing on its own.

Signed-off-by: Fabio Checconi <fabio@gandalf.sssup.it>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Fabio Checconi
2008-04-02 14:31:02 +02:00
committed by Jens Axboe
parent 00d61e3e8c
commit 34e6bbf23c
2 changed files with 30 additions and 30 deletions
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3
include/linux/iocontext.h
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@ -2,6 +2,7 @@
#define IOCONTEXT_H
#include <linux/radix-tree.h>
#include <linux/rcupdate.h>
/*
* This is the per-process anticipatory I/O scheduler state.
@ -54,6 +55,8 @@ struct cfq_io_context {
void (*dtor)(struct io_context *); /* destructor */
void (*exit)(struct io_context *); /* called on task exit */
struct rcu_head rcu_head;
};
/*