Commit df59d0a4 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

XArray: Add xa_limit_16b 



A 16-bit limit is a more common limit than I had realised.  Make it
generally available.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
parent 3012110d

include/linux/xarray.h

+3 −1
Original line number Diff line number Diff line
@@ -229,9 +229,10 @@ static inline int xa_err(void *entry) 
 *

 * This structure is used either directly or via the XA_LIMIT() macro

 * to communicate the range of IDs that are valid for allocation.

 * Two common ranges are predefined for you:

 * Three common ranges are predefined for you:

 * * xa_limit_32b	- [0 - UINT_MAX]

 * * xa_limit_31b	- [0 - INT_MAX]

 * * xa_limit_16b	- [0 - USHRT_MAX]

 */

struct xa_limit {

	u32 max;
@@ -242,6 +243,7 @@ struct xa_limit { 


#define xa_limit_32b	XA_LIMIT(0, UINT_MAX)

#define xa_limit_31b	XA_LIMIT(0, INT_MAX)

#define xa_limit_16b	XA_LIMIT(0, USHRT_MAX)



typedef unsigned __bitwise xa_mark_t;

#define XA_MARK_0		((__force xa_mark_t)0U)