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xarray: Add xas_create_range

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This hopefully temporary function is useful for users who have not yet
been converted to multi-index entries.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox 2017-12-04 00:11:48 -05:00
parent 4e99d4e957
commit 2264f5132f
3 changed files with 182 additions and 0 deletions
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13
include/linux/xarray.h
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@ -822,6 +822,17 @@ static inline bool xas_valid(const struct xa_state *xas)
return !xas_invalid(xas);
}
/**
* xas_is_node() - Does the xas point to a node?
* @xas: XArray operation state.
*
* Return: %true if the xas currently references a node.
*/
static inline bool xas_is_node(const struct xa_state *xas)
{
return xas_valid(xas) && xas->xa_node;
}
/* True if the pointer is something other than a node */
static inline bool xas_not_node(struct xa_node *node)
{
@ -889,6 +900,8 @@ void xas_init_marks(const struct xa_state *);
bool xas_nomem(struct xa_state *, gfp_t);
void xas_pause(struct xa_state *);
void xas_create_range(struct xa_state *);
/**
* xas_reload() - Refetch an entry from the xarray.
* @xas: XArray operation state.