dax_lock_entry

Name:Return: The entry stored at this location before it was locked.

Proto:static void *dax_lock_entry(struct xa_state *xas, void *entry)

Type:void

Parameter:

Type	Parameter	Name
struct xa_state *	xas
void *	entry

297

v = xa_to_value() - Get value stored in an XArray entry.*@entry: XArray entry.* Context: Any context.* Return: The value stored in the XArray entry.

298

Return xas_store() - Store this entry in the XArray

**Caller**
Name	Describe
dax_lock_page	dax_lock_mapping_entry - Lock the DAX entry corresponding to a page@page: The page whose entry we want to lock Context: Process context.* Return: A cookie to pass to dax_unlock_page() or 0 if the entry could* not be locked.
grab_mapping_entry	Find page cache entry at given index. If it is a DAX entry, return it* with the entry locked. If the page cache doesn't contain an entry at* that index, add a locked empty entry.* When requesting an entry with size DAX_PMD, grab_mapping_entry() will
dax_insert_entry	By this point grab_mapping_entry() has ensured that we have a locked entry* of the appropriate size so we don't have to worry about downgrading PMDs to* PTEs
dax_writeback_one
dax_insert_pfn_mkwrite	dax_insert_pfn_mkwrite - insert PTE or PMD entry into page tables@vmf: The description of the fault@pfn: PFN to insert@order: Order of entry to insert. This function inserts a writeable PTE or PMD entry into the page tables* for an mmaped DAX file

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