xa_find_entry

Name:See find_swap_entry() in mm/shmem.c

Proto:static noinline unsigned long xa_find_entry(struct xarray *xa, void *item)

Type:unsigned long

Parameter:

Type	Parameter	Name
struct xarray *	xa
void *	item

1089

XA_STATE() - Declare an XArray operation state.*@name: Name of this operation state (usually xas).*@array: Array to operate on.*@index: Initial index of interest.* Declare and initialise an xa_state on the stack.(xas, xa, 0)

1090

checked = 0

1093

_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

1095

If xas_retry() - Retry the operation if appropriate.*@xas: XArray operation state.*@entry: Entry from xarray.* The advanced functions may sometimes return an internal entry, such as* a retry entry or a zero entry. This function sets up the @xas to restart Then Continue

1097

If entry == item Then Break

1099

1100

If checked % 4 != 0 Then Continue

1102

xas_pause() - Pause a walk to drop a lock.*@xas: XArray operation state.* Some users need to pause a walk and drop the lock they're holding in* order to yield to a higher priority thread or carry out an operation* on an entry

1104

_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

1106

Return If entry Then xa_index Else -1

**Caller**
Name	Describe
check_find_entry

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