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block: fold create_task_io_context into ioc_find_get_icq

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Fold create_task_io_context into the only remaining caller.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20211209063131.18537-11-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-12-09 07:31:30 +01:00 committed by Jens Axboe
parent 5fc11eebb4
commit 90b627f542
1 changed files with 12 additions and 31 deletions
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43
block/blk-ioc.c
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@ -238,36 +238,6 @@ static struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
return ioc;
}
static struct io_context *create_task_io_context(struct task_struct *task,
gfp_t gfp_flags, int node)
{
struct io_context *ioc;
ioc = alloc_io_context(gfp_flags, node);
if (!ioc)
return NULL;
/*
* Try to install. ioc shouldn't be installed if someone else
* already did or @task, which isn't %current, is exiting. Note
* that we need to allow ioc creation on exiting %current as exit
* path may issue IOs from e.g. exit_files(). The exit path is
* responsible for not issuing IO after exit_io_context().
*/
task_lock(task);
if (!task->io_context &&
(task == current || !(task->flags & PF_EXITING)))
task->io_context = ioc;
else
kmem_cache_free(iocontext_cachep, ioc);
ioc = task->io_context;
if (ioc)
get_io_context(ioc);
task_unlock(task);
return ioc;
}
int set_task_ioprio(struct task_struct *task, int ioprio)
{
int err;
@ -426,9 +396,20 @@ struct io_cq *ioc_find_get_icq(struct request_queue *q)
struct io_cq *icq = NULL;
if (unlikely(!ioc)) {
ioc = create_task_io_context(current, GFP_ATOMIC, q->node);
ioc = alloc_io_context(GFP_ATOMIC, q->node);
if (!ioc)
return NULL;
task_lock(current);
if (current->io_context) {
kmem_cache_free(iocontext_cachep, ioc);
ioc = current->io_context;
} else {
current->io_context = ioc;
}
get_io_context(ioc);
task_unlock(current);
} else {
get_io_context(ioc);