f2fs: introduce a new ioctl F2FS_IOC_WRITE_CHECKPOINT (456b88e4) · Commits · 戴 / test

fs/f2fs/f2fs.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -231,6 +231,7 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
		#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
		#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
		#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
		#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)

		#define F2FS_IOC_SET_ENCRYPTION_POLICY \
		_IOR('f', 19, struct f2fs_encryption_policy)

+23 −0

Original line number	Diff line number	Diff line
		@@ -1639,6 +1639,27 @@ static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
		return f2fs_gc(sbi, sync);
		}

		static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
		{
		struct inode *inode = file_inode(filp);
		struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
		struct cp_control cpc;

		if (!capable(CAP_SYS_ADMIN))
		return -EPERM;

		if (f2fs_readonly(sbi->sb))
		return -EROFS;

		cpc.reason = __get_cp_reason(sbi);

		mutex_lock(&sbi->gc_mutex);
		write_checkpoint(sbi, &cpc);
		mutex_unlock(&sbi->gc_mutex);

		return 0;
		}

		long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
		{
		switch (cmd) {
		@@ -1670,6 +1691,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
		return f2fs_ioc_get_encryption_pwsalt(filp, arg);
		case F2FS_IOC_GARBAGE_COLLECT:
		return f2fs_ioc_gc(filp, arg);
		case F2FS_IOC_WRITE_CHECKPOINT:
		return f2fs_ioc_write_checkpoint(filp, arg);
		default:
		return -ENOTTY;
		}