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authorMatthew Wilcox (Oracle) <willy@infradead.org>2021-03-30 13:40:27 -0400
committerMatthew Wilcox (Oracle) <willy@infradead.org>2021-03-30 13:42:33 -0400
commitdf59d0a461bc5935232bf56a279e4d7a71c566a5 (patch)
treef3997bffd62f1508714bfd896fdaee4e89b7d4b7 /include
parent3012110d71f41410932924e1d188f9eb57f1f824 (diff)
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: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/xarray.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index 92c0160b3352..a91e3d90df8a 100644
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -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)