korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-21 20:22:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

block: remove create_io_context

Browse Source 
create_io_context just has a single caller, which also happens to not
even use the return value.  Just open code it there.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-04-25 09:55:51 +02:00 committed by Jens Axboe
parent 28d65729b0
commit 3e82c3485e
2 changed files with 6 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
block/blk-core.c
View File

@ -963,12 +963,13 @@ generic_make_request_checks(struct bio *bio)
}
/*
* Various block parts want %current->io_context and lazy ioc
* allocation ends up trading a lot of pain for a small amount of
* memory. Just allocate it upfront. This may fail and block
* layer knows how to live with it.
* Various block parts want %current->io_context, so allocate it up
* front rather than dealing with lots of pain to allocate it only
* where needed. This may fail and the block layer knows how to live
* with it.
*/
create_io_context(GFP_ATOMIC, q->node);
if (unlikely(!current->io_context))
create_task_io_context(current, GFP_ATOMIC, q->node);
if (!blkcg_bio_issue_check(q, bio))
return false;

20
block/blk.h
View File

@ -303,26 +303,6 @@ void ioc_clear_queue(struct request_queue *q);
int create_task_io_context(struct task_struct *task, gfp_t gfp_mask, int node);
/**
* create_io_context - try to create task->io_context
* @gfp_mask: allocation mask
* @node: allocation node
*
* If %current->io_context is %NULL, allocate a new io_context and install
* it. Returns the current %current->io_context which may be %NULL if
* allocation failed.
*
* Note that this function can't be called with IRQ disabled because
* task_lock which protects %current->io_context is IRQ-unsafe.
*/
static inline struct io_context *create_io_context(gfp_t gfp_mask, int node)
{
WARN_ON_ONCE(irqs_disabled());
if (unlikely(!current->io_context))
create_task_io_context(current, gfp_mask, node);
return current->io_context;
}
/*
* Internal throttling interface
*/