__dax_invalidate_entry

Name:__dax_invalidate_entry

Proto:static int __dax_invalidate_entry(struct address_space *mapping, unsigned long index, bool trunc)

Type:int

Parameter:

Type	Parameter	Name
struct address_space *	mapping
unsigned long	index
bool	trunc

633

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, & i_pages, index)

634

ret = 0

637

xas_lock_irq( & xas)

638

entry = Look up entry in page cache, wait for it to become unlocked if it* is a DAX entry and return it. The caller must subsequently call* put_unlocked_entry() if it did not lock the entry or dax_unlock_entry()* if it did

639

If Not entry || WARN_ON_ONCE(!xa_is_value() - Determine if an entry is a value.*@entry: XArray entry.* Context: Any context.* Return: True if the entry is a value, false if it is a pointer.) Then Go to out

641

If Not trunc && (xas_get_mark() - Returns the state of this mark.*@xas: XArray operation state.*@mark: Mark number.* Return: true if the mark is set, false if the mark is clear or @xas* is in an error state. || xas_get_mark() - Returns the state of this mark.*@xas: XArray operation state.*@mark: Mark number.* Return: true if the mark is set, false if the mark is clear or @xas* is in an error state.) Then Go to out

645

dax_disassociate_entry(entry, mapping, trunc)

646

xas_store() - Store this entry in the XArray

647

nrexceptional--

648

ret = 1

649

out :

650

put_unlocked_entry( & xas, entry)

651

xas_unlock_irq( & xas)

652

Return ret

**Caller**
Name	Describe
dax_delete_mapping_entry	Delete DAX entry at @index from @mapping. Wait for it* to be unlocked before deleting it.
dax_invalidate_mapping_entry_sync	Invalidate DAX entry if it is clean.

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion