From ce289321b7dc1eb108e3df0dec872b7429ef49f7 Mon Sep 17 00:00:00 2001
From: Kirill Afonshin <kirill_nnov@mail.ru>
Date: Fri, 8 Jan 2010 22:09:59 +0300
Subject: [PATCH] block: removed unused as_io_context
It isn't used anymore, since AS was deleted.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
block/blk-ioc.c | 5 -----
include/linux/iocontext.h | 27 ---------------------------
2 files changed, 32 deletions(-)
diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index cbdabb0dd6d7..98e6bf61b0ac 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -39,8 +39,6 @@ int put_io_context(struct io_context *ioc)
if (atomic_long_dec_and_test(&ioc->refcount)) {
rcu_read_lock();
- if (ioc->aic && ioc->aic->dtor)
- ioc->aic->dtor(ioc->aic);
cfq_dtor(ioc);
rcu_read_unlock();
@@ -76,8 +74,6 @@ void exit_io_context(struct task_struct *task)
task_unlock(task);
if (atomic_dec_and_test(&ioc->nr_tasks)) {
- if (ioc->aic && ioc->aic->exit)
- ioc->aic->exit(ioc->aic);
cfq_exit(ioc);
}
@@ -97,7 +93,6 @@ struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
ret->ioprio = 0;
ret->last_waited = jiffies; /* doesn't matter... */
ret->nr_batch_requests = 0; /* because this is 0 */
- ret->aic = NULL;
INIT_RADIX_TREE(&ret->radix_root, GFP_ATOMIC | __GFP_HIGH);
INIT_HLIST_HEAD(&ret->cic_list);
ret->ioc_data = NULL;
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index a63235996309..78ef023227d4 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -4,32 +4,6 @@
#include <linux/radix-tree.h>
#include <linux/rcupdate.h>
-/*
- * This is the per-process anticipatory I/O scheduler state.
- */
-struct as_io_context {
- spinlock_t lock;
-
- void (*dtor)(struct as_io_context *aic); /* destructor */
- void (*exit)(struct as_io_context *aic); /* called on task exit */
-
- unsigned long state;
- atomic_t nr_queued; /* queued reads & sync writes */
- atomic_t nr_dispatched; /* number of requests gone to the drivers */
-
- /* IO History tracking */
- /* Thinktime */
- unsigned long last_end_request;
- unsigned long ttime_total;
- unsigned long ttime_samples;
- unsigned long ttime_mean;
- /* Layout pattern */
- unsigned int seek_samples;
- sector_t last_request_pos;
- u64 seek_total;
- sector_t seek_mean;
-};
-
struct cfq_queue;
struct cfq_io_context {
void *key;
@@ -78,7 +52,6 @@ struct io_context {
unsigned long last_waited; /* Time last woken after wait for request */
int nr_batch_requests; /* Number of requests left in the batch */
- struct as_io_context *aic;
struct radix_tree_root radix_root;
struct hlist_head cic_list;
void *ioc_data;
--
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