mirror of
https://github.com/torvalds/linux
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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 */
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#include <linux/kernel.h>
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#include <linux/blkdev.h>
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#include <linux/init.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include <linux/slab.h>
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#include <linux/mount.h>
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#include <linux/major.h>
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#include <linux/root_dev.h>
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#include <linux/init_syscalls.h>
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#include <linux/task_work.h>
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#include <linux/file.h>
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void mount_root_generic(char *name, char *pretty_name, int flags);
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void mount_root(char *root_device_name);
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extern int root_mountflags;
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static inline __init int create_dev(char *name, dev_t dev)
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{
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init_unlink(name);
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return init_mknod(name, S_IFBLK | 0600, new_encode_dev(dev));
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}
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#ifdef CONFIG_BLK_DEV_RAM
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int __init rd_load_disk(int n);
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int __init rd_load_image(char *from);
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#else
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static inline int rd_load_disk(int n) { return 0; }
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static inline int rd_load_image(char *from) { return 0; }
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#endif
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#ifdef CONFIG_BLK_DEV_INITRD
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bool __init initrd_load(char *root_device_name);
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#else
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static inline bool initrd_load(char *root_device_name)
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{
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return false;
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}
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#endif
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/* Ensure that async file closing finished to prevent spurious errors. */
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static inline void init_flush_fput(void)
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{
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flush_delayed_fput();
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task_work_run();
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}
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