get_empty_dquot

Name:get_empty_dquot

Proto:static struct dquot *get_empty_dquot(struct super_block *sb, int type)

Type:struct dquot

Parameter:

Type	Parameter	Name
struct super_block *	sb
int	type

821

dquot = alloc_dquot(sb, type)

822

If Not dquot Then Return NULL

825

mutex_init - initialize the mutex*@mutex: the mutex to be initialized* Initialize the mutex to unlocked state.* It is not allowed to initialize an already locked mutex.( & dquot IO lock )

826

Initialization list head

827

Initialization list head

828

INIT_HLIST_NODE( & Hash list in memory [dq_list_lock] )

829

Initialization list head

830

superblock this applies to = sb

831

ID this applies to (uid, gid, projid) = make_kqid_invalid - Explicitly make an invalid kqid*@type: The type of quota identifier* Returns an invalid kqid with the specified type.

832

atomic_set( & Use count , 1)

833

Process spin lock initialization( & Lock protecting dq_dqb changes )

835

Return dquot

**Caller**
Name	Describe
dqget	Get reference to dquot* Locking is slightly tricky here. We are guarded from parallel quotaoff()* destroying our dquot by:* a) checking for quota flags under dq_list_lock and* b) getting a reference to dquot before we release dq_list_lock

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