Nothing ever looks at ->nr_tasks, so remove it.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
block/blk-ioc.c | 3 ---
include/linux/iocontext.h | 1 -
2 files changed, 4 deletions(-)
diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index 536fb496ad763..96336c2134efa 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -207,7 +207,6 @@ void exit_io_context(struct task_struct *task)
task->io_context = NULL;
task_unlock(task);
- atomic_dec(&ioc->nr_tasks);
put_io_context_active(ioc);
}
@@ -259,7 +258,6 @@ static struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
return NULL;
atomic_long_set(&ioc->refcount, 1);
- atomic_set(&ioc->nr_tasks, 1);
atomic_set(&ioc->active_ref, 1);
spin_lock_init(&ioc->lock);
INIT_RADIX_TREE(&ioc->icq_tree, GFP_ATOMIC);
@@ -339,7 +337,6 @@ int __copy_io(unsigned long clone_flags, struct task_struct *tsk)
if (clone_flags & CLONE_IO) {
atomic_long_inc(&ioc->refcount);
atomic_inc(&ioc->active_ref);
- atomic_inc(&ioc->nr_tasks);
tsk->io_context = ioc;
} else if (ioprio_valid(ioc->ioprio)) {
tsk->io_context = alloc_io_context(GFP_KERNEL, NUMA_NO_NODE);
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index c1229fbd6691c..82c7f4f5f4f59 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -99,7 +99,6 @@ struct io_cq {
struct io_context {
atomic_long_t refcount;
atomic_t active_ref;
- atomic_t nr_tasks;
/* all the fields below are protected by this lock */
spinlock_t lock;
--
2.30.2
