Example #1
0
asmlinkage int vprintk(const char *fmt, va_list args)
{
	int printed_len = 0;
	int current_log_level = default_message_loglevel;
	unsigned long flags;
	int this_cpu;
	char *p;

	boot_delay_msec();

	preempt_disable();
	/* This stops the holder of console_sem just where we want him */
	raw_local_irq_save(flags);
	this_cpu = smp_processor_id();

	/*
	 * Ouch, printk recursed into itself!
	 */
	if (unlikely(printk_cpu == this_cpu)) {
		/*
		 * If a crash is occurring during printk() on this CPU,
		 * then try to get the crash message out but make sure
		 * we can't deadlock. Otherwise just return to avoid the
		 * recursion and return - but flag the recursion so that
		 * it can be printed at the next appropriate moment:
		 */
		if (!oops_in_progress) {
			recursion_bug = 1;
			goto out_restore_irqs;
		}
		zap_locks();
	}

	lockdep_off();
	spin_lock(&logbuf_lock);
	printk_cpu = this_cpu;

	if (recursion_bug) {
		recursion_bug = 0;
		strcpy(printk_buf, recursion_bug_msg);
		printed_len = sizeof(recursion_bug_msg);
	}
	/* Emit the output into the temporary buffer */
	printed_len += vscnprintf(printk_buf + printed_len,
				  sizeof(printk_buf) - printed_len, fmt, args);


#ifdef	CONFIG_DEBUG_LL
	printascii(printk_buf);
#endif

	/*
	 * Copy the output into log_buf.  If the caller didn't provide
	 * appropriate log level tags, we insert them here
	 */
	for (p = printk_buf; *p; p++) {
		if (new_text_line) {
			/* If a token, set current_log_level and skip over */
			if (p[0] == '<' && p[1] >= '0' && p[1] <= '7' &&
			    p[2] == '>') {
				current_log_level = p[1] - '0';
				p += 3;
				printed_len -= 3;
			}

			/* Always output the token */
			emit_log_char('<');
			emit_log_char(current_log_level + '0');
			emit_log_char('>');
			printed_len += 3;
			new_text_line = 0;

			if (printk_time) {
				/* Follow the token with the time */
				char tbuf[50], *tp;
				unsigned tlen;
				unsigned long long t;
				unsigned long nanosec_rem;

				t = cpu_clock(printk_cpu);
				nanosec_rem = do_div(t, 1000000000);
				tlen = sprintf(tbuf, "[%5lu.%06lu] ",
						(unsigned long) t,
						nanosec_rem / 1000);

				for (tp = tbuf; tp < tbuf + tlen; tp++)
					emit_log_char(*tp);
				printed_len += tlen;
			}

			if (!*p)
				break;
		}

		emit_log_char(*p);
		if (*p == '\n')
			new_text_line = 1;
	}

	/*
	 * Try to acquire and then immediately release the
	 * console semaphore. The release will do all the
	 * actual magic (print out buffers, wake up klogd,
	 * etc). 
	 *
	 * The acquire_console_semaphore_for_printk() function
	 * will release 'logbuf_lock' regardless of whether it
	 * actually gets the semaphore or not.
	 */
	if (acquire_console_semaphore_for_printk(this_cpu))
		release_console_sem();

	lockdep_on();
out_restore_irqs:
	raw_local_irq_restore(flags);

	preempt_enable();
	return printed_len;
}
void spm_go_to_sodi(u32 spm_flags, u32 spm_data)
{
    struct wake_status wakesta;
    unsigned long flags;
    struct mtk_irq_mask mask;
    wake_reason_t wr = WR_NONE;
    struct pcm_desc *pcmdesc = __spm_sodi.pcmdesc;
    struct pwr_ctrl *pwrctrl = __spm_sodi.pwrctrl;

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(1<<SPM_SODI_ENTER);
#endif 
    
#if defined (CONFIG_ARM_PSCI)||defined(CONFIG_MTK_PSCI)
    spm_flags &= ~SPM_DISABLE_ATF_ABORT;
#else
    spm_flags |= SPM_DISABLE_ATF_ABORT;
#endif

	if(gSpm_SODI_mempll_pwr_mode == 1)
	{
		spm_flags |= SPM_MEMPLL_CG_EN; //MEMPLL CG mode
	}
	else
	{
		spm_flags &= ~SPM_MEMPLL_CG_EN; //DDRPHY power down mode
	}

    set_pwrctrl_pcm_flags(pwrctrl, spm_flags);
    
    //If Vcore DVFS is disable, force to disable SODI internal Vcore DVS
    if (pwrctrl->pcm_flags_cust == 0)
    {
        if ((pwrctrl->pcm_flags & SPM_VCORE_DVFS_EN) == 0) 
        {
            pwrctrl->pcm_flags |= SPM_VCORE_DVS_EVENT_DIS;
        }
    }
    
    //SODI will not decrease Vcore voltage in HPM mode.
    if ((pwrctrl->pcm_flags & SPM_VCORE_DVS_EVENT_DIS) == 0)
    {
        if (get_ddr_khz() != FDDR_S1_KHZ)
        {
#if SPM_AEE_RR_REC
            aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_VCORE_HPM));
#endif 
            //printk("SODI: get_ddr_khz() = %d\n", get_ddr_khz());
        }
        else
        {
#if SPM_AEE_RR_REC
            aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_VCORE_LPM));
#endif            
        }
    }
    
    //enable APxGPT timer
	soidle_before_wfi(0);
	
	lockdep_off();
    spin_lock_irqsave(&__spm_lock, flags);

    mt_irq_mask_all(&mask);
    mt_irq_unmask_for_sleep(SPM_IRQ0_ID);
    mt_cirq_clone_gic();
    mt_cirq_enable();

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_ENTER_SPM_FLOW));
#endif   

    __spm_reset_and_init_pcm(pcmdesc);

	/*
	 * When commond-queue is in shut-down mode, SPM will hang if it tries to access commond-queue status.  
     * Follwoing patch is to let SODI driver to notify SPM that commond-queue is in shut-down mode or not to avoid above SPM hang issue. 
     * But, now display can automatically notify SPM that command-queue is shut-down or not, so following code is not needed anymore.
	 */
	#if 0 
    //check GCE
	if(clock_is_on(MT_CG_INFRA_GCE))
	{
		pwrctrl->pcm_flags &= ~SPM_DDR_HIGH_SPEED; 
	}
	else
	{
		pwrctrl->pcm_flags |= SPM_DDR_HIGH_SPEED; 
	}
	#endif

    __spm_kick_im_to_fetch(pcmdesc);
    
    __spm_init_pcm_register();
    
    __spm_init_event_vector(pcmdesc);
    
    if (pwrctrl->pcm_flags_cust == 0)
    {
        //Display set SPM_PCM_SRC_REQ[0]=1'b1 to force DRAM not enter self-refresh mode
    	if((spm_read(SPM_PCM_SRC_REQ)&0x00000001))
    	{
    		pwrctrl->pcm_apsrc_req = 1;
    	}
    	else
    	{
    		pwrctrl->pcm_apsrc_req = 0;
    	}
    }

    __spm_set_power_control(pwrctrl);
    
    __spm_set_wakeup_event(pwrctrl);
    
#if SODI_DVT_PCM_TIMER_DISABLE
	//PCM_Timer is enable in above '__spm_set_wakeup_event(pwrctrl);', disable PCM Timer here
	spm_write(SPM_PCM_CON1 ,spm_read(SPM_PCM_CON1)&(~CON1_PCM_TIMER_EN));
#endif

    __spm_kick_pcm_to_run(pwrctrl);

    spm_sodi_pre_process();
    
#if SPM_SODI_DUMP_REGS
    printk("============SODI Before============\n");
    spm_sodi_dump_regs(); //dump debug info
#endif
      
#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_ENTER_WFI));
#endif

    spm_trigger_wfi_for_sodi(pwrctrl);

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_LEAVE_WFI));
#endif  

#if SPM_SODI_DUMP_REGS
    printk("============SODI After=============\n");
    spm_sodi_dump_regs();//dump debug info
#endif

    spm_sodi_post_process();
    
    __spm_get_wakeup_status(&wakesta);
    
    sodi_debug("emi-selfrefrsh cnt = %d, pcm_flag = 0x%x, SPM_PCM_RESERVE2 = 0x%x, %s\n", spm_read(SPM_PCM_PASR_DPD_3), spm_read(SPM_PCM_FLAGS), spm_read(SPM_PCM_RESERVE2), pcmdesc->version);
    
    __spm_clean_after_wakeup();
    
    wr = __spm_output_wake_reason(&wakesta, pcmdesc, false);
    if (wr == WR_PCM_ASSERT)
    {
        sodi_err("PCM ASSERT AT %u (%s), r13 = 0x%x, debug_flag = 0x%x\n", wakesta.assert_pc, pcmdesc->version, wakesta.r13, wakesta.debug_flag);   
    }
    
#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_LEAVE_SPM_FLOW));
#endif  

    mt_cirq_flush();
    mt_cirq_disable();
    mt_irq_mask_restore(&mask);
	
    spin_unlock_irqrestore(&__spm_lock, flags);
    lockdep_on();

    //stop APxGPT timer and enable caore0 local timer
    soidle_after_wfi(0);  

#if SODI_DVT_SPM_MEM_RW_TEST
    {	
        static u32 magic_init = 0;
        int i =0;

        if(magic_init == 0){
		    magic_init++;
		    printk("magicNumArray:0x%p",magicArray);
	    }

    	for(i=0;i<16;i++)
    	{
    		if(magicArray[i]!=SODI_DVT_MAGIC_NUM)
    		{
    			printk("Error: sodi magic number no match!!!");
    			ASSERT(0);
    		}
    	}
    	
    	if (i>=16)
    	    printk("SODI_DVT_SPM_MEM_RW_TEST pass (count = %d)\n", magic_init);
    }
#endif

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(0);
#endif 
}
wake_reason_t spm_go_to_dpidle(u32 spm_flags, u32 spm_data)
{
    struct wake_status wakesta;
    unsigned long flags;
    struct mtk_irq_mask mask;
    wake_reason_t wr = WR_NONE;
    struct pcm_desc *pcmdesc = __spm_dpidle.pcmdesc;
    struct pwr_ctrl *pwrctrl = __spm_dpidle.pwrctrl;

#if SPM_AEE_RR_REC
    aee_rr_rec_deepidle_val(1<<SPM_DEEPIDLE_ENTER);
#endif 

    set_pwrctrl_pcm_flags(pwrctrl, spm_flags);
    
    //pwrctrl->timer_val = 1 * 32768;

    spm_dpidle_before_wfi();

    lockdep_off();
    spin_lock_irqsave(&__spm_lock, flags);    
    mt_irq_mask_all(&mask);
    mt_irq_unmask_for_sleep(SPM_IRQ0_ID);
    mt_cirq_clone_gic();
    mt_cirq_enable();

#if SPM_AEE_RR_REC
    aee_rr_rec_deepidle_val(aee_rr_curr_deepidle_val()|(1<<SPM_DEEPIDLE_ENTER_UART_SLEEP));
#endif     

    if (request_uart_to_sleep()) {
        wr = WR_UART_BUSY;
        goto RESTORE_IRQ;
    }

    __spm_reset_and_init_pcm(pcmdesc);

    __spm_kick_im_to_fetch(pcmdesc);
	
    __spm_init_pcm_register();

    __spm_init_event_vector(pcmdesc);

    __spm_set_power_control(pwrctrl);

    __spm_set_wakeup_event(pwrctrl);

    spm_dpidle_pre_process();

    __spm_kick_pcm_to_run(pwrctrl);

#if SPM_AEE_RR_REC
    aee_rr_rec_deepidle_val(aee_rr_curr_deepidle_val()|(1<<SPM_DEEPIDLE_ENTER_WFI));
#endif

#ifdef SPM_DEEPIDLE_PROFILE_TIME
    gpt_get_cnt(SPM_PROFILE_APXGPT,&dpidle_profile[1]);
#endif   
    spm_trigger_wfi_for_dpidle(pwrctrl);
#ifdef SPM_DEEPIDLE_PROFILE_TIME
    gpt_get_cnt(SPM_PROFILE_APXGPT,&dpidle_profile[2]);
#endif

#if SPM_AEE_RR_REC
    aee_rr_rec_deepidle_val(aee_rr_curr_deepidle_val()|(1<<SPM_DEEPIDLE_LEAVE_WFI));
#endif 

    spm_dpidle_post_process();

    __spm_get_wakeup_status(&wakesta);

    __spm_clean_after_wakeup();

#if SPM_AEE_RR_REC
    aee_rr_rec_deepidle_val(aee_rr_curr_deepidle_val()|(1<<SPM_DEEPIDLE_ENTER_UART_AWAKE));
#endif

    request_uart_to_wakeup();

    wr = __spm_output_wake_reason(&wakesta, pcmdesc, false);

RESTORE_IRQ:
    mt_cirq_flush();
    mt_cirq_disable();
    mt_irq_mask_restore(&mask);  
    spin_unlock_irqrestore(&__spm_lock, flags);
    lockdep_on();
    spm_dpidle_after_wfi();

#if SPM_AEE_RR_REC
    aee_rr_rec_deepidle_val(0);
#endif 
    return wr;
}
Example #4
0
static void sysrq_handle_reboot(int key)
{
	lockdep_off();
	local_irq_enable();
	emergency_restart();
}
Example #5
0
int vfsub_rename(struct inode *src_dir, struct dentry *src_dentry,
		 struct inode *dir, struct path *path,
		 struct inode **delegated_inode)
{
	int err;
	struct path tmp = {
		.mnt	= path->mnt
	};
	struct dentry *d;

	IMustLock(dir);
	IMustLock(src_dir);

	d = path->dentry;
	path->dentry = d->d_parent;
	tmp.dentry = src_dentry->d_parent;
	err = security_path_rename(&tmp, src_dentry, path, d, /*flags*/0);
	path->dentry = d;
	if (unlikely(err))
		goto out;

	lockdep_off();
	err = vfs_rename(src_dir, src_dentry, dir, path->dentry,
			 delegated_inode, /*flags*/0);
	lockdep_on();
	if (!err) {
		int did;

		tmp.dentry = d->d_parent;
		vfsub_update_h_iattr(&tmp, &did);
		if (did) {
			tmp.dentry = src_dentry;
			vfsub_update_h_iattr(&tmp, /*did*/NULL);
			tmp.dentry = src_dentry->d_parent;
			vfsub_update_h_iattr(&tmp, /*did*/NULL);
		}
		/*ignore*/
	}

out:
	return err;
}

int vfsub_mkdir(struct inode *dir, struct path *path, int mode)
{
	int err;
	struct dentry *d;

	IMustLock(dir);

	d = path->dentry;
	path->dentry = d->d_parent;
	err = security_path_mkdir(path, d, mode);
	path->dentry = d;
	if (unlikely(err))
		goto out;

	lockdep_off();
	err = vfs_mkdir(dir, path->dentry, mode);
	lockdep_on();
	if (!err) {
		struct path tmp = *path;
		int did;

		vfsub_update_h_iattr(&tmp, &did);
		if (did) {
			tmp.dentry = path->dentry->d_parent;
			vfsub_update_h_iattr(&tmp, /*did*/NULL);
		}
		/*ignore*/
	}

out:
	return err;
}
Example #6
0
static int __copyup_reg_data(struct dentry *dentry,
			     struct dentry *new_lower_dentry, int new_bindex,
			     struct dentry *old_lower_dentry, int old_bindex,
			     struct file **copyup_file, loff_t len)
{
	struct super_block *sb = dentry->d_sb;
	struct file *input_file;
	struct file *output_file;
	struct vfsmount *output_mnt;
	mm_segment_t old_fs;
	char *buf = NULL;
	ssize_t read_bytes, write_bytes;
	loff_t size;
	int err = 0;

	/* open old file */
	unionfs_mntget(dentry, old_bindex);
	branchget(sb, old_bindex);
	/* dentry_open calls dput and mntput if it returns an error */
	input_file = dentry_open(old_lower_dentry,
				 unionfs_lower_mnt_idx(dentry, old_bindex),
				 O_RDONLY | O_LARGEFILE, current_cred());
	if (IS_ERR(input_file)) {
		dput(old_lower_dentry);
		err = PTR_ERR(input_file);
		goto out;
	}
	if (unlikely(!input_file->f_op || !input_file->f_op->read)) {
		err = -EINVAL;
		goto out_close_in;
	}

	/* open new file */
	dget(new_lower_dentry);
	output_mnt = unionfs_mntget(sb->s_root, new_bindex);
	branchget(sb, new_bindex);
	output_file = dentry_open(new_lower_dentry, output_mnt,
				  O_RDWR | O_LARGEFILE, current_cred());
	if (IS_ERR(output_file)) {
		err = PTR_ERR(output_file);
		goto out_close_in2;
	}
	if (unlikely(!output_file->f_op || !output_file->f_op->write)) {
		err = -EINVAL;
		goto out_close_out;
	}

	/* allocating a buffer */
	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (unlikely(!buf)) {
		err = -ENOMEM;
		goto out_close_out;
	}

	input_file->f_pos = 0;
	output_file->f_pos = 0;

	old_fs = get_fs();
	set_fs(KERNEL_DS);

	size = len;
	err = 0;
	do {
		if (len >= PAGE_SIZE)
			size = PAGE_SIZE;
		else if ((len < PAGE_SIZE) && (len > 0))
			size = len;

		len -= PAGE_SIZE;

		read_bytes =
			input_file->f_op->read(input_file,
					       (char __user *)buf, size,
					       &input_file->f_pos);
		if (read_bytes <= 0) {
			err = read_bytes;
			break;
		}

		/* see Documentation/filesystems/unionfs/issues.txt */
		lockdep_off();
		write_bytes =
			output_file->f_op->write(output_file,
						 (char __user *)buf,
						 read_bytes,
						 &output_file->f_pos);
		lockdep_on();
		if ((write_bytes < 0) || (write_bytes < read_bytes)) {
			err = write_bytes;
			break;
		}
	} while ((read_bytes > 0) && (len > 0));

	set_fs(old_fs);

	kfree(buf);

	if (!err)
		err = output_file->f_op->fsync(output_file,
					       new_lower_dentry, 0);

	if (err)
		goto out_close_out;

	if (copyup_file) {
		*copyup_file = output_file;
		goto out_close_in;
	}

out_close_out:
	fput(output_file);

out_close_in2:
	branchput(sb, new_bindex);

out_close_in:
	fput(input_file);

out:
	branchput(sb, old_bindex);

	return err;
}
Example #7
0
/*
  Basically stolen from Linux kernel's printk

  TODO: Handle log levels.

*/
int log_vprintk(const char *levelstr, const char *func,
		const char *fmt, va_list args)
{
	int printed_len = 0;
	int this_cpu;
        unsigned long flags;
	char *p;

	preempt_disable();
	this_cpu = smp_processor_id();

	lockdep_off();
	spin_lock_irqsave(&logbuf_lock, flags);
	printk_cpu = this_cpu;

	/* Emit the output into the temporary buffer */
	printed_len += vscnprintf(printk_buf + printed_len,
				  sizeof(printk_buf) - printed_len, fmt, args);

	p = printk_buf;

	/*
	 * Copy the output into log_buf.  If the caller didn't provide
	 * appropriate log level tags, we insert them here
	 */
	for ( ; *p; p++) {
		if (new_text_line) {
			const char *lp;

			new_text_line = 0;

			if (log_time) {
				/* Follow the token with the time */
				char tbuf[50], *tp;
				unsigned tlen;
				unsigned long long t;
				unsigned long nanosec_rem;

				t = cpu_clock(printk_cpu);
				nanosec_rem = do_div(t, 1000000000);
				tlen = sprintf(tbuf, "[%5lu.%06lu] ",
						(unsigned long) t,
						nanosec_rem / 1000);

				for (tp = tbuf; tp < tbuf + tlen; tp++)
					emit_log_char(*tp);
				printed_len += tlen;
			}
			/* Emit log level */
			emit_log_char('[');
			printed_len++;
			for (lp = levelstr; *lp != '\0'; lp++) {
				emit_log_char(*lp);
				printed_len++;
			}

			emit_log_char(']');
			printed_len++;

			for (lp = func; *lp != '\0'; lp++) {
				emit_log_char(*lp);
				printed_len++;
			}

			emit_log_char(':');
			emit_log_char(' ');
			printed_len += 2;

			if (!*p)
				break;
		}

		emit_log_char(*p);
		if (*p == '\n')
			new_text_line = 1;
	}

	wake_up_interruptible(&log_wait);

	spin_unlock_irqrestore(&logbuf_lock, flags);
	lockdep_on();
	preempt_enable();

	return printed_len;
}
void spm_go_to_sodi(u32 spm_flags, u32 spm_data)
{
    struct wake_status wakesta;
    unsigned long flags;
    struct mtk_irq_mask mask;
    wake_reason_t wr = WR_NONE;
    struct pcm_desc *pcmdesc = __spm_sodi.pcmdesc;
    struct pwr_ctrl *pwrctrl = __spm_sodi.pwrctrl;

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(1<<SPM_SODI_ENTER);
#endif 

    set_pwrctrl_pcm_flags(pwrctrl, spm_flags);

    /* set PMIC WRAP table for deepidle power control */
    mt_cpufreq_set_pmic_phase(PMIC_WRAP_PHASE_SODI);	

    soidle_before_wfi(0);
    lockdep_off(); 
    spin_lock_irqsave(&__spm_lock, flags);

    mt_irq_mask_all(&mask);
    mt_irq_unmask_for_sleep(SPM_IRQ0_ID/*MT_SPM_IRQ_ID*/);
    mt_cirq_clone_gic();
    mt_cirq_enable();

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_ENTER_SPM_FLOW));
#endif   

    __spm_reset_and_init_pcm(pcmdesc);
#if 0
    /* 0: mempll shutdown mode; 1: cg mode */
    gSpm_SODI_mempll_pwr_mode ? (pwrctrl->pcm_flags |= SPM_MEMPLL_CPU) :
				(pwrctrl->pcm_flags &= ~SPM_MEMPLL_CPU);
#endif

    __spm_kick_im_to_fetch(pcmdesc);

    __spm_init_pcm_register();

    __spm_init_event_vector(pcmdesc);

    /* set pcm_apsrc_req to be 1 if 10006b0c[0] is 1 */
    if ((spm_read(SPM_PCM_SRC_REQ) & 1) || pwrctrl->pcm_apsrc_req)
        pwrctrl->pcm_apsrc_req = 1;
    else
        pwrctrl->pcm_apsrc_req = 0;

    __spm_set_power_control(pwrctrl);

    __spm_set_wakeup_event(pwrctrl);

    /* set pcm_flags[18] to be 1 if 10006b08[7] is 1 */
    if ((spm_read(SPM_PCM_FLAGS) & SPM_MEMPLL_RESET) ||
        gSpm_SODI_mempll_pwr_mode ||
        (pwrctrl->pcm_flags_cust & SPM_MEMPLL_CPU))
        pwrctrl->pcm_flags |= SPM_MEMPLL_CPU;
    else
        pwrctrl->pcm_flags &= ~SPM_MEMPLL_CPU;

    __spm_kick_pcm_to_run(pwrctrl);

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_ENTER_WFI));
#endif

    spm_trigger_wfi_for_sodi(pwrctrl);

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_LEAVE_WFI));
#endif  

    __spm_get_wakeup_status(&wakesta);

    __spm_clean_after_wakeup();	

    wr = __spm_output_wake_reason(&wakesta, pcmdesc, false);
    /* for test */
    /* wr = __spm_output_wake_reason(&wakesta, pcmdesc, true); */

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(aee_rr_curr_sodi_val()|(1<<SPM_SODI_LEAVE_SPM_FLOW));
#endif  

    mt_cirq_flush();
    mt_cirq_disable();
    mt_irq_mask_restore(&mask);

    spin_unlock_irqrestore(&__spm_lock, flags);
    lockdep_on();
    soidle_after_wfi(0);
	
     /* set PMIC WRAP table for normal power control */
    mt_cpufreq_set_pmic_phase(PMIC_WRAP_PHASE_NORMAL);  

#if SPM_AEE_RR_REC
    aee_rr_rec_sodi_val(0);
#endif 
    //return wr;

}
Example #9
0
struct dentry *vfsub_lookup_hash(struct nameidata *nd)
{
    struct path path = {
        .mnt = nd->path.mnt
    };

    IMustLock(nd->path.dentry->d_inode);

    path.dentry = lookup_hash(nd);
    if (IS_ERR(path.dentry))
        goto out;
    if (path.dentry->d_inode)
        vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/

out:
    AuTraceErrPtr(path.dentry);
    return path.dentry;
}

/*
 * this is "VFS:__lookup_one_len()" which was removed and merged into
 * VFS:lookup_one_len() by the commit.
 *	6a96ba5 2011-03-14 kill __lookup_one_len()
 * this function should always be equivalent to the corresponding part in
 * VFS:lookup_one_len().
 */
int vfsub_name_hash(const char *name, struct qstr *this, int len)
{
    unsigned long hash;
    unsigned int c;

    this->name = name;
    this->len = len;
    if (!len)
        return -EACCES;

    hash = init_name_hash();
    while (len--) {
        c = *(const unsigned char *)name++;
        if (c == '/' || c == '\0')
            return -EACCES;
        hash = partial_name_hash(c, hash);
    }
    this->hash = end_name_hash(hash);
    return 0;
}

/* ---------------------------------------------------------------------- */

struct dentry *vfsub_lock_rename(struct dentry *d1, struct au_hinode *hdir1,
                                 struct dentry *d2, struct au_hinode *hdir2)
{
    struct dentry *d;

    lockdep_off();
    d = lock_rename(d1, d2);
    lockdep_on();
    au_hn_suspend(hdir1);
    if (hdir1 != hdir2)
        au_hn_suspend(hdir2);

    return d;
}

void vfsub_unlock_rename(struct dentry *d1, struct au_hinode *hdir1,
                         struct dentry *d2, struct au_hinode *hdir2)
{
    au_hn_resume(hdir1);
    if (hdir1 != hdir2)
        au_hn_resume(hdir2);
    lockdep_off();
    unlock_rename(d1, d2);
    lockdep_on();
}
Example #10
0
/*
 * release all lower object references & free the file info structure
 *
 * No need to grab sb info's rwsem.
 */
int unionfs_file_release(struct inode *inode, struct file *file)
{
	struct file *lower_file = NULL;
	struct unionfs_file_info *fileinfo;
	struct unionfs_inode_info *inodeinfo;
	struct super_block *sb = inode->i_sb;
	struct dentry *dentry = file->f_path.dentry;
	struct dentry *parent;
	int bindex, bstart, bend;
	int fgen, err = 0;

	/*
	 * Since mm/memory.c:might_fault() (under PROVE_LOCKING) was
	 * modified in 2.6.29-rc1 to call might_lock_read on mmap_sem, this
	 * has been causing false positives in file system stacking layers.
	 * In particular, our ->mmap is called after sys_mmap2 already holds
	 * mmap_sem, then we lock our own mutexes; but earlier, it's
	 * possible for lockdep to have locked our mutexes first, and then
	 * we call a lower ->readdir which could call might_fault.  The
	 * different ordering of the locks is what lockdep complains about
	 * -- unnecessarily.  Therefore, we have no choice but to tell
	 * lockdep to temporarily turn off lockdep here.  Note: the comments
	 * inside might_sleep also suggest that it would have been
	 * nicer to only annotate paths that needs that might_lock_read.
	 */
	lockdep_off();
	unionfs_read_lock(sb, UNIONFS_SMUTEX_PARENT);
	parent = unionfs_lock_parent(dentry, UNIONFS_DMUTEX_PARENT);
	unionfs_lock_dentry(dentry, UNIONFS_DMUTEX_CHILD);

	/*
	 * We try to revalidate, but the VFS ignores return return values
	 * from file->release, so we must always try to succeed here,
	 * including to do the kfree and dput below.  So if revalidation
	 * failed, all we can do is print some message and keep going.
	 */
	err = unionfs_file_revalidate(file, parent,
				      UNIONFS_F(file)->wrote_to_file);
	if (!err)
		unionfs_check_file(file);
	fileinfo = UNIONFS_F(file);
	BUG_ON(file->f_path.dentry->d_inode != inode);
	inodeinfo = UNIONFS_I(inode);

	/* fput all the lower files */
	fgen = atomic_read(&fileinfo->generation);
	bstart = fbstart(file);
	bend = fbend(file);

	for (bindex = bstart; bindex <= bend; bindex++) {
		lower_file = unionfs_lower_file_idx(file, bindex);

		if (lower_file) {
			unionfs_set_lower_file_idx(file, bindex, NULL);
			fput(lower_file);
			branchput(sb, bindex);
		}

		/* if there are no more refs to the dentry, dput it */
		if (d_deleted(dentry)) {
			dput(unionfs_lower_dentry_idx(dentry, bindex));
			unionfs_set_lower_dentry_idx(dentry, bindex, NULL);
		}
	}

	kfree(fileinfo->lower_files);
	kfree(fileinfo->saved_branch_ids);

	if (fileinfo->rdstate) {
		fileinfo->rdstate->access = jiffies;
		spin_lock(&inodeinfo->rdlock);
		inodeinfo->rdcount++;
		list_add_tail(&fileinfo->rdstate->cache,
			      &inodeinfo->readdircache);
		mark_inode_dirty(inode);
		spin_unlock(&inodeinfo->rdlock);
		fileinfo->rdstate = NULL;
	}
	kfree(fileinfo);

	unionfs_unlock_dentry(dentry);
	unionfs_unlock_parent(dentry, parent);
	unionfs_read_unlock(sb);
	lockdep_on();
	return err;
}
Example #11
0
void au_fi_mmap_unlock(struct file *file)
{
	lockdep_off();
	mutex_unlock(&au_fi(file)->fi_mmap);
	lockdep_on();
}
Example #12
0
static int __unionfs_rename(struct inode *old_dir, struct dentry *old_dentry,
			    struct dentry *old_parent,
			    struct inode *new_dir, struct dentry *new_dentry,
			    struct dentry *new_parent,
			    int bindex)
{
	int err = 0;
	struct dentry *lower_old_dentry;
	struct dentry *lower_new_dentry;
	struct dentry *lower_old_dir_dentry;
	struct dentry *lower_new_dir_dentry;
	struct dentry *trap;

	lower_new_dentry = unionfs_lower_dentry_idx(new_dentry, bindex);
	lower_old_dentry = unionfs_lower_dentry_idx(old_dentry, bindex);

	if (!lower_new_dentry) {
		lower_new_dentry =
			create_parents(new_parent->d_inode,
				       new_dentry, new_dentry->d_name.name,
				       bindex);
		if (IS_ERR(lower_new_dentry)) {
			err = PTR_ERR(lower_new_dentry);
			if (IS_COPYUP_ERR(err))
				goto out;
			printk(KERN_ERR "unionfs: error creating directory "
			       "tree for rename, bindex=%d err=%d\n",
			       bindex, err);
			goto out;
		}
	}

	/* check for and remove whiteout, if any */
	err = check_unlink_whiteout(new_dentry, lower_new_dentry, bindex);
	if (err > 0) /* ignore if whiteout found and successfully removed */
		err = 0;
	if (err)
		goto out;

	/* check of old_dentry branch is writable */
	err = is_robranch_super(old_dentry->d_sb, bindex);
	if (err)
		goto out;

	dget(lower_old_dentry);
	dget(lower_new_dentry);
	lower_old_dir_dentry = dget_parent(lower_old_dentry);
	lower_new_dir_dentry = dget_parent(lower_new_dentry);

	/* see Documentation/filesystems/unionfs/issues.txt */
	lockdep_off();
	trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
	/* source should not be ancenstor of target */
	if (trap == lower_old_dentry) {
		err = -EINVAL;
		goto out_err_unlock;
	}
	/* target should not be ancenstor of source */
	if (trap == lower_new_dentry) {
		err = -ENOTEMPTY;
		goto out_err_unlock;
	}
	err = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
			 lower_new_dir_dentry->d_inode, lower_new_dentry);
out_err_unlock:
	if (!err) {
		/* update parent dir times */
		fsstack_copy_attr_times(old_dir, lower_old_dir_dentry->d_inode);
		fsstack_copy_attr_times(new_dir, lower_new_dir_dentry->d_inode);
	}
	unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
	lockdep_on();

	dput(lower_old_dir_dentry);
	dput(lower_new_dir_dentry);
	dput(lower_old_dentry);
	dput(lower_new_dentry);

out:
	if (!err) {
		/* Fixup the new_dentry. */
		if (bindex < dbstart(new_dentry))
			dbstart(new_dentry) = bindex;
		else if (bindex > dbend(new_dentry))
			dbend(new_dentry) = bindex;
	}

	return err;
}
Example #13
0
static int unionfs_link(struct dentry *old_dentry, struct inode *dir,
			struct dentry *new_dentry)
{
	int err = 0;
	struct dentry *lower_old_dentry = NULL;
	struct dentry *lower_new_dentry = NULL;
	struct dentry *lower_dir_dentry = NULL;
	struct dentry *old_parent, *new_parent;
	char *name = NULL;
	bool valid;

	unionfs_read_lock(old_dentry->d_sb, UNIONFS_SMUTEX_CHILD);
	old_parent = dget_parent(old_dentry);
	new_parent = dget_parent(new_dentry);
	unionfs_double_lock_parents(old_parent, new_parent);
	unionfs_double_lock_dentry(old_dentry, new_dentry);

	valid = __unionfs_d_revalidate(old_dentry, old_parent, false);
	if (unlikely(!valid)) {
		err = -ESTALE;
		goto out;
	}
	if (new_dentry->d_inode) {
		valid = __unionfs_d_revalidate(new_dentry, new_parent, false);
		if (unlikely(!valid)) {
			err = -ESTALE;
			goto out;
		}
	}

	lower_new_dentry = unionfs_lower_dentry(new_dentry);

	/* check for a whiteout in new dentry branch, and delete it */
	err = check_unlink_whiteout(new_dentry, lower_new_dentry,
				    dbstart(new_dentry));
	if (err > 0) {	       /* whiteout found and removed successfully */
		lower_dir_dentry = dget_parent(lower_new_dentry);
		fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
		dput(lower_dir_dentry);
		dir->i_nlink = unionfs_get_nlinks(dir);
		err = 0;
	}
	if (err)
		goto out;

	/* check if parent hierachy is needed, then link in same branch */
	if (dbstart(old_dentry) != dbstart(new_dentry)) {
		lower_new_dentry = create_parents(dir, new_dentry,
						  new_dentry->d_name.name,
						  dbstart(old_dentry));
		err = PTR_ERR(lower_new_dentry);
		if (IS_COPYUP_ERR(err))
			goto docopyup;
		if (!lower_new_dentry || IS_ERR(lower_new_dentry))
			goto out;
	}
	lower_new_dentry = unionfs_lower_dentry(new_dentry);
	lower_old_dentry = unionfs_lower_dentry(old_dentry);

	BUG_ON(dbstart(old_dentry) != dbstart(new_dentry));
	lower_dir_dentry = lock_parent(lower_new_dentry);
	err = is_robranch(old_dentry);
	if (!err) {
		/* see Documentation/filesystems/unionfs/issues.txt */
		lockdep_off();
		err = vfs_link(lower_old_dentry, lower_dir_dentry->d_inode,
			       lower_new_dentry);
		lockdep_on();
	}
	unlock_dir(lower_dir_dentry);

docopyup:
	if (IS_COPYUP_ERR(err)) {
		int old_bstart = dbstart(old_dentry);
		int bindex;

		for (bindex = old_bstart - 1; bindex >= 0; bindex--) {
			err = copyup_dentry(old_parent->d_inode,
					    old_dentry, old_bstart,
					    bindex, old_dentry->d_name.name,
					    old_dentry->d_name.len, NULL,
					    i_size_read(old_dentry->d_inode));
			if (err)
				continue;
			lower_new_dentry =
				create_parents(dir, new_dentry,
					       new_dentry->d_name.name,
					       bindex);
			lower_old_dentry = unionfs_lower_dentry(old_dentry);
			lower_dir_dentry = lock_parent(lower_new_dentry);
			/* see Documentation/filesystems/unionfs/issues.txt */
			lockdep_off();
			/* do vfs_link */
			err = vfs_link(lower_old_dentry,
				       lower_dir_dentry->d_inode,
				       lower_new_dentry);
			lockdep_on();
			unlock_dir(lower_dir_dentry);
			goto check_link;
		}
		goto out;
	}

check_link:
	if (err || !lower_new_dentry->d_inode)
		goto out;

	/* Its a hard link, so use the same inode */
	new_dentry->d_inode = igrab(old_dentry->d_inode);
	d_add(new_dentry, new_dentry->d_inode);
	unionfs_copy_attr_all(dir, lower_new_dentry->d_parent->d_inode);
	fsstack_copy_inode_size(dir, lower_new_dentry->d_parent->d_inode);

	/* propagate number of hard-links */
	old_dentry->d_inode->i_nlink = unionfs_get_nlinks(old_dentry->d_inode);
	/* new dentry's ctime may have changed due to hard-link counts */
	unionfs_copy_attr_times(new_dentry->d_inode);

out:
	if (!new_dentry->d_inode)
		d_drop(new_dentry);

	kfree(name);
	if (!err)
		unionfs_postcopyup_setmnt(new_dentry);

	unionfs_check_inode(dir);
	unionfs_check_dentry(new_dentry);
	unionfs_check_dentry(old_dentry);

	unionfs_double_unlock_dentry(old_dentry, new_dentry);
	unionfs_double_unlock_parents(old_parent, new_parent);
	dput(new_parent);
	dput(old_parent);
	unionfs_read_unlock(old_dentry->d_sb);

	return err;
}
Example #14
0
asmlinkage int vprintk(const char *fmt, va_list args)
{
	int printed_len = 0;
	int current_log_level = default_message_loglevel;
	unsigned long flags;
	int this_cpu;
	char *p;

	boot_delay_msec();
	printk_delay();

	preempt_disable();
	/* This stops the holder of console_sem just where we want him */
	raw_local_irq_save(flags);
	this_cpu = smp_processor_id();

	/*
	 * Ouch, printk recursed into itself!
	 */
	if (unlikely(printk_cpu == this_cpu)) {
		/*
		 * If a crash is occurring during printk() on this CPU,
		 * then try to get the crash message out but make sure
		 * we can't deadlock. Otherwise just return to avoid the
		 * recursion and return - but flag the recursion so that
		 * it can be printed at the next appropriate moment:
		 */
		if (!oops_in_progress) {
			recursion_bug = 1;
			goto out_restore_irqs;
		}
		zap_locks();
	}

	lockdep_off();
	spin_lock(&logbuf_lock);
	printk_cpu = this_cpu;

	if (recursion_bug) {
		recursion_bug = 0;
		strcpy(printk_buf, recursion_bug_msg);
		printed_len = strlen(recursion_bug_msg);
	}
	/* Emit the output into the temporary buffer */
	printed_len += vscnprintf(printk_buf + printed_len,
				  sizeof(printk_buf) - printed_len, fmt, args);


	p = printk_buf;

	/* Do we have a loglevel in the string? */
	if (p[0] == '<') {
		unsigned char c = p[1];
		if (c && p[2] == '>') {
			switch (c) {
			case '0' ... '7': /* loglevel */
				current_log_level = c - '0';
			/* Fallthrough - make sure we're on a new line */
			case 'd': /* KERN_DEFAULT */
				if (!new_text_line) {
					emit_log_char('\n');
					new_text_line = 1;
				}
			/* Fallthrough - skip the loglevel */
			case 'c': /* KERN_CONT */
				p += 3;
				break;
			}
		}
	}
Example #15
0
static inline void action_lock_lock(void)
{
	lockdep_off();
	write_lock(&krg_action_lock);
}
Example #16
0
asmlinkage int vprintk(const char *fmt, va_list args)
{
	unsigned long flags;
	int printed_len;
	char *p;
	static char printk_buf[1024];
	static int log_level_unknown = 1;

	preempt_disable();
	if (unlikely(oops_in_progress) && printk_cpu == smp_processor_id())
		/* If a crash is occurring during printk() on this CPU,
		 * make sure we can't deadlock */
		zap_locks();

	/* This stops the holder of console_sem just where we want him */
	raw_local_irq_save(flags);
	lockdep_off();
	spin_lock(&logbuf_lock);
	printk_cpu = smp_processor_id();

	/* Emit the output into the temporary buffer */
	printed_len = vscnprintf(printk_buf, sizeof(printk_buf), fmt, args);

#ifdef	CONFIG_DEBUG_LL
	printascii(printk_buf);
#endif

	/*
	 * Copy the output into log_buf.  If the caller didn't provide
	 * appropriate log level tags, we insert them here
	 */
	for (p = printk_buf; *p; p++) {
		if (log_level_unknown) {
                        /* log_level_unknown signals the start of a new line */
			if (printk_time) {
				int loglev_char;
				char tbuf[50], *tp;
				unsigned tlen;
				unsigned long long t;
				unsigned long nanosec_rem;

				/*
				 * force the log level token to be
				 * before the time output.
				 */
				if (p[0] == '<' && p[1] >='0' &&
				   p[1] <= '7' && p[2] == '>') {
					loglev_char = p[1];
					p += 3;
					printed_len -= 3;
				} else {
					loglev_char = default_message_loglevel
						+ '0';
				}
				t = printk_clock();
				nanosec_rem = do_div(t, 1000000000);
				tlen = sprintf(tbuf,
						"<%c>[%5lu.%06lu] ",
						loglev_char,
						(unsigned long)t,
						nanosec_rem/1000);

				for (tp = tbuf; tp < tbuf + tlen; tp++)
					emit_log_char(*tp);
				printed_len += tlen;
			} else {
				if (p[0] != '<' || p[1] < '0' ||
				   p[1] > '7' || p[2] != '>') {
					emit_log_char('<');
					emit_log_char(default_message_loglevel
						+ '0');
					emit_log_char('>');
					printed_len += 3;
				}
			}
			log_level_unknown = 0;
			if (!*p)
				break;
		}
		emit_log_char(*p);
		if (*p == '\n')
			log_level_unknown = 1;
	}

	if (!down_trylock(&console_sem)) {
		/*
		 * We own the drivers.  We can drop the spinlock and
		 * let release_console_sem() print the text, maybe ...
		 */
		console_locked = 1;
		printk_cpu = UINT_MAX;
		spin_unlock(&logbuf_lock);

		/*
		 * Console drivers may assume that per-cpu resources have
		 * been allocated. So unless they're explicitly marked as
		 * being able to cope (CON_ANYTIME) don't call them until
		 * this CPU is officially up.
		 */
		if (cpu_online(smp_processor_id()) || have_callable_console()) {
			console_may_schedule = 0;
			release_console_sem();
		} else {
			/* Release by hand to avoid flushing the buffer. */
			console_locked = 0;
			up(&console_sem);
		}
		lockdep_on();
		raw_local_irq_restore(flags);
	} else {
		/*
		 * Someone else owns the drivers.  We drop the spinlock, which
		 * allows the semaphore holder to proceed and to call the
		 * console drivers with the output which we just produced.
		 */
		printk_cpu = UINT_MAX;
		spin_unlock(&logbuf_lock);
		lockdep_on();
		raw_local_irq_restore(flags);
	}

	preempt_enable();
	return printed_len;
}
Example #17
0
static int au_cmoo(struct dentry *dentry)
{
	int err, cmoo;
	unsigned int udba;
	struct path h_path;
	struct au_pin pin;
	struct au_cp_generic cpg = {
		.dentry	= dentry,
		.bdst	= -1,
		.bsrc	= -1,
		.len	= -1,
		.pin	= &pin,
		.flags	= AuCpup_DTIME | AuCpup_HOPEN
	};
	struct inode *inode, *delegated;
	struct super_block *sb;
	struct au_sbinfo *sbinfo;
	struct au_fhsm *fhsm;
	pid_t pid;
	struct au_branch *br;
	struct dentry *parent;
	struct au_hinode *hdir;

	DiMustWriteLock(dentry);
	inode = dentry->d_inode;
	IiMustWriteLock(inode);

	err = 0;
	if (IS_ROOT(dentry))
		goto out;
	cpg.bsrc = au_dbstart(dentry);
	if (!cpg.bsrc)
		goto out;

	sb = dentry->d_sb;
	sbinfo = au_sbi(sb);
	fhsm = &sbinfo->si_fhsm;
	pid = au_fhsm_pid(fhsm);
	if (pid
	    && (current->pid == pid
		|| current->real_parent->pid == pid))
		goto out;

	br = au_sbr(sb, cpg.bsrc);
	cmoo = au_br_cmoo(br->br_perm);
	if (!cmoo)
		goto out;
	if (!S_ISREG(inode->i_mode))
		cmoo &= AuBrAttr_COO_ALL;
	if (!cmoo)
		goto out;

	parent = dget_parent(dentry);
	di_write_lock_parent(parent);
	err = au_wbr_do_copyup_bu(dentry, cpg.bsrc - 1);
	cpg.bdst = err;
	if (unlikely(err < 0)) {
		err = 0;	/* there is no upper writable branch */
		goto out_dgrade;
	}
	AuDbg("bsrc %d, bdst %d\n", cpg.bsrc, cpg.bdst);

	/* do not respect the coo attrib for the target branch */
	err = au_cpup_dirs(dentry, cpg.bdst);
	if (unlikely(err))
		goto out_dgrade;

	di_downgrade_lock(parent, AuLock_IR);
	udba = au_opt_udba(sb);
	err = au_pin(&pin, dentry, cpg.bdst, udba,
		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
	if (unlikely(err))
		goto out_parent;

	err = au_sio_cpup_simple(&cpg);
	au_unpin(&pin);
	if (unlikely(err))
		goto out_parent;
	if (!(cmoo & AuBrWAttr_MOO))
		goto out_parent; /* success */

	err = au_pin(&pin, dentry, cpg.bsrc, udba,
		     AuPin_DI_LOCKED | AuPin_MNT_WRITE);
	if (unlikely(err))
		goto out_parent;

	h_path.mnt = au_br_mnt(br);
	h_path.dentry = au_h_dptr(dentry, cpg.bsrc);
	hdir = au_hi(parent->d_inode, cpg.bsrc);
	delegated = NULL;
	err = vfsub_unlink(hdir->hi_inode, &h_path, &delegated, /*force*/1);
	au_unpin(&pin);
	/* todo: keep h_dentry or not? */
	if (unlikely(err == -EWOULDBLOCK)) {
		pr_warn("cannot retry for NFSv4 delegation"
			" for an internal unlink\n");
		iput(delegated);
	}
	if (unlikely(err)) {
		pr_err("unlink %pd after coo failed (%d), ignored\n",
		       dentry, err);
		err = 0;
	}
	goto out_parent; /* success */

out_dgrade:
	di_downgrade_lock(parent, AuLock_IR);
out_parent:
	di_read_unlock(parent, AuLock_IR);
	dput(parent);
out:
	AuTraceErr(err);
	return err;
}

int au_do_open(struct file *file, struct au_do_open_args *args)
{
	int err, no_lock = args->no_lock;
	struct dentry *dentry;
	struct au_finfo *finfo;

	if (!no_lock)
		err = au_finfo_init(file, args->fidir);
	else {
		lockdep_off();
		err = au_finfo_init(file, args->fidir);
		lockdep_on();
	}
	if (unlikely(err))
		goto out;

	dentry = file->f_dentry;
	AuDebugOn(IS_ERR_OR_NULL(dentry));
	if (!no_lock) {
		di_write_lock_child(dentry);
		err = au_cmoo(dentry);
		di_downgrade_lock(dentry, AuLock_IR);
		if (!err)
			err = args->open(file, vfsub_file_flags(file), NULL);
		di_read_unlock(dentry, AuLock_IR);
	} else {
		err = au_cmoo(dentry);
		if (!err)
			err = args->open(file, vfsub_file_flags(file),
					 args->h_file);
		if (!err && au_fbstart(file) != au_dbstart(dentry))
			/*
			 * cmoo happens after h_file was opened.
			 * need to refresh file later.
			 */
			atomic_dec(&au_fi(file)->fi_generation);
	}

	finfo = au_fi(file);
	if (!err) {
		finfo->fi_file = file;
		au_sphl_add(&finfo->fi_hlist,
			    &au_sbi(file->f_dentry->d_sb)->si_files);
	}
	if (!no_lock)
		fi_write_unlock(file);
	else {
		lockdep_off();
		fi_write_unlock(file);
		lockdep_on();
	}
	if (unlikely(err)) {
		finfo->fi_hdir = NULL;
		au_finfo_fin(file);
	}

out:
	return err;
}