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authorLinus Torvalds <torvalds@g5.osdl.org>2006-03-28 09:25:44 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-28 09:25:44 -0800
commit7baf398f12585ae77748716fa77113c1f1831153 (patch)
tree492361d848d3dfc33563a1bdf0d0f61b454aac82 /block/ll_rw_blk.c
parent78cd9e04e0acea4f622e84ca0c760c7eae0c6854 (diff)
parent206dc69b31ca05baac68c75b8ed2ba7dd857d273 (diff)
Merge branch 'cfq-merge' of git://brick.kernel.dk/data/git/linux-2.6-block
* 'cfq-merge' of git://brick.kernel.dk/data/git/linux-2.6-block: [BLOCK] cfq-iosched: seek and async performance fixes [PATCH] ll_rw_blk: fix 80-col offender in put_io_context() [PATCH] cfq-iosched: small cfq_choose_req() optimization [PATCH] [BLOCK] cfq-iosched: change cfq io context linking from list to tree
Diffstat (limited to 'block/ll_rw_blk.c')
-rw-r--r--block/ll_rw_blk.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 5a19e2eb5711..5b26af8597f3 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3539,11 +3539,17 @@ void put_io_context(struct io_context *ioc)
BUG_ON(atomic_read(&ioc->refcount) == 0);
if (atomic_dec_and_test(&ioc->refcount)) {
+ struct cfq_io_context *cic;
+
rcu_read_lock();
if (ioc->aic && ioc->aic->dtor)
ioc->aic->dtor(ioc->aic);
- if (ioc->cic && ioc->cic->dtor)
- ioc->cic->dtor(ioc->cic);
+ if (ioc->cic_root.rb_node != NULL) {
+ struct rb_node *n = rb_first(&ioc->cic_root);
+
+ cic = rb_entry(n, struct cfq_io_context, rb_node);
+ cic->dtor(ioc);
+ }
rcu_read_unlock();
kmem_cache_free(iocontext_cachep, ioc);
@@ -3556,6 +3562,7 @@ void exit_io_context(void)
{
unsigned long flags;
struct io_context *ioc;
+ struct cfq_io_context *cic;
local_irq_save(flags);
task_lock(current);
@@ -3567,9 +3574,11 @@ void exit_io_context(void)
if (ioc->aic && ioc->aic->exit)
ioc->aic->exit(ioc->aic);
- if (ioc->cic && ioc->cic->exit)
- ioc->cic->exit(ioc->cic);
-
+ if (ioc->cic_root.rb_node != NULL) {
+ cic = rb_entry(rb_first(&ioc->cic_root), struct cfq_io_context, rb_node);
+ cic->exit(ioc);
+ }
+
put_io_context(ioc);
}
@@ -3598,7 +3607,7 @@ struct io_context *current_io_context(gfp_t gfp_flags)
ret->last_waited = jiffies; /* doesn't matter... */
ret->nr_batch_requests = 0; /* because this is 0 */
ret->aic = NULL;
- ret->cic = NULL;
+ ret->cic_root.rb_node = NULL;
tsk->io_context = ret;
}