From a411cd3cfdc5bbd1329d5b33dbf39e2b5213969d Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 9 Dec 2021 07:31:27 +0100
Subject: block: move set_task_ioprio to blk-ioc.c

Keep set_task_ioprio with the other low-level code that accesses the
io_context structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20211209063131.18537-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 block/ioprio.c | 32 --------------------------------
 1 file changed, 32 deletions(-)

(limited to 'block/ioprio.c')

diff --git a/block/ioprio.c b/block/ioprio.c
index 313c14a70bbd..e118f4bf2dc6 100644
--- a/block/ioprio.c
+++ b/block/ioprio.c
@@ -22,46 +22,14 @@
  */
 #include <linux/gfp.h>
 #include <linux/kernel.h>
-#include <linux/export.h>
 #include <linux/ioprio.h>
 #include <linux/cred.h>
 #include <linux/blkdev.h>
 #include <linux/capability.h>
-#include <linux/sched/user.h>
-#include <linux/sched/task.h>
 #include <linux/syscalls.h>
 #include <linux/security.h>
 #include <linux/pid_namespace.h>
 
-int set_task_ioprio(struct task_struct *task, int ioprio)
-{
-	int err;
-	struct io_context *ioc;
-	const struct cred *cred = current_cred(), *tcred;
-
-	rcu_read_lock();
-	tcred = __task_cred(task);
-	if (!uid_eq(tcred->uid, cred->euid) &&
-	    !uid_eq(tcred->uid, cred->uid) && !capable(CAP_SYS_NICE)) {
-		rcu_read_unlock();
-		return -EPERM;
-	}
-	rcu_read_unlock();
-
-	err = security_task_setioprio(task, ioprio);
-	if (err)
-		return err;
-
-	ioc = get_task_io_context(task, GFP_ATOMIC, NUMA_NO_NODE);
-	if (ioc) {
-		ioc->ioprio = ioprio;
-		put_io_context(ioc);
-	}
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(set_task_ioprio);
-
 int ioprio_check_cap(int ioprio)
 {
 	int class = IOPRIO_PRIO_CLASS(ioprio);
-- 
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