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authorDan Williams <dan.j.williams@intel.com>2022-09-24 18:14:12 -0700
committerDan Williams <dan.j.williams@intel.com>2022-09-24 18:14:12 -0700
commitb3bbcc5d1da1b654091dad15980b3d58fdae0fc6 (patch)
tree77795fbece4fc61a659ed97c70d798ca81f35bb8 /include/linux/compiler.h
parentfsdax: Fix infinite loop in dax_iomap_rw() (diff)
parentdevdax: Fix soft-reservation memory description (diff)
Merge branch 'for-6.0/dax' into libnvdimm-fixes
Pick up another "Soft Reservation" fix for v6.0-final on top of some straggling nvdimm fixes that missed v5.19.
Diffstat (limited to 'include/linux/compiler.h')
-rw-r--r--include/linux/compiler.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 01ce94b58b42..7713d7bcdaea 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -240,6 +240,12 @@ static inline void *offset_to_ptr(const int *off)
#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
/*
+ * Whether 'type' is a signed type or an unsigned type. Supports scalar types,
+ * bool and also pointer types.
+ */
+#define is_signed_type(type) (((type)(-1)) < (__force type)1)
+
+/*
* This is needed in functions which generate the stack canary, see
* arch/x86/kernel/smpboot.c::start_secondary() for an example.
*/