mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-18 08:35:08 +08:00
386dc41cf5
When unpacking the initramfs or when mounting block devices we need to ensure that any delayed fput() finished to prevent spurious errors. The init process can be a proper kernel thread or a user mode helper. In the latter case PF_KTHREAD isn't set. So we need to do both flush_delayed_work() and task_work_run(). Since we'll port block device opening and closing to regular file open and closing we need to ensure the same as for the initramfs. So just make that a little helper. Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Srikanth Aithal <sraithal@amd.com> Link: https://lore.kernel.org/r/CA+G9fYttTwsbFuVq10igbSvP5xC6bf_XijM=mpUqrJV=uvUirQ@mail.gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#include <linux/kernel.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/init.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/mount.h>
|
|
#include <linux/major.h>
|
|
#include <linux/root_dev.h>
|
|
#include <linux/init_syscalls.h>
|
|
#include <linux/task_work.h>
|
|
#include <linux/file.h>
|
|
|
|
void mount_root_generic(char *name, char *pretty_name, int flags);
|
|
void mount_root(char *root_device_name);
|
|
extern int root_mountflags;
|
|
|
|
static inline __init int create_dev(char *name, dev_t dev)
|
|
{
|
|
init_unlink(name);
|
|
return init_mknod(name, S_IFBLK | 0600, new_encode_dev(dev));
|
|
}
|
|
|
|
#ifdef CONFIG_BLK_DEV_RAM
|
|
|
|
int __init rd_load_disk(int n);
|
|
int __init rd_load_image(char *from);
|
|
|
|
#else
|
|
|
|
static inline int rd_load_disk(int n) { return 0; }
|
|
static inline int rd_load_image(char *from) { return 0; }
|
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
bool __init initrd_load(char *root_device_name);
|
|
#else
|
|
static inline bool initrd_load(char *root_device_name)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* Ensure that async file closing finished to prevent spurious errors. */
|
|
static inline void init_flush_fput(void)
|
|
{
|
|
flush_delayed_fput();
|
|
task_work_run();
|
|
}
|