Unverified Commit c8352b65 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!2927 dm ioctl: add DMINFO() to track dm device create/remove 

Merge Pull Request from: @zhengzengkai 
 
Add DMIINFO() to help tracking device creation/removal success, in case failure occurs without debug information. 
 
Link:https://gitee.com/openeuler/kernel/pulls/2927

 

Reviewed-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
parents ee470722 a2d40404

drivers/md/dm-ioctl.c

+11 −0
Original line number Original line Diff line number Diff line
@@ -327,6 +327,9 @@ static struct dm_table *__hash_remove(struct hash_cell *hc) 
	table = NULL;

	table = NULL;

	if (hc->new_map)

	if (hc->new_map)

		table = hc->new_map;

		table = hc->new_map;



	DMINFO("%s[%i]: %s (%s) is removed successfully",

		current->comm, current->pid, hc->md->disk->disk_name, hc->name);

	dm_put(hc->md);

	dm_put(hc->md);

	free_cell(hc);

	free_cell(hc);
@@ -880,6 +883,7 @@ static int dev_create(struct file *filp, struct dm_ioctl *param, size_t param_si 
{

{

	int r, m = DM_ANY_MINOR;

	int r, m = DM_ANY_MINOR;

	struct mapped_device *md;

	struct mapped_device *md;

	struct hash_cell *hc;





	r = check_name(param->name);

	r = check_name(param->name);

	if (r)

	if (r)
@@ -903,6 +907,13 @@ static int dev_create(struct file *filp, struct dm_ioctl *param, size_t param_si 




	__dev_status(md, param);

	__dev_status(md, param);





	mutex_lock(&dm_hash_cells_mutex);

	hc = dm_get_mdptr(md);

	if (hc)

		DMINFO("%s[%i]: %s (%s) is created successfully",

			current->comm, current->pid, md->disk->disk_name, hc->name);



	mutex_unlock(&dm_hash_cells_mutex);

	dm_put(md);

	dm_put(md);





	return 0;

	return 0;