[PATCH] mm/slob: avoid type warning about alignment value

[Arnd Bergmann]

The types for ARCH_KMALLOC_MINALIGN and ARCH_SLAB_MINALIGN are not always
the same, as seen by building ARM collie_defconfig:

mm/slob.c: In function 'kfree':
mm/slob.c:482:153: warning: comparison of distinct pointer types lacks a cast
mm/slob.c: In function 'ksize':
mm/slob.c:501:153: warning: comparison of distinct pointer types lacks a cast

Using max_t to find the correct alignment avoids the warning.

Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
diff --git a/mm/slob.c b/mm/slob.c
index 95d1c7d..51d6a27 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -426,7 +426,7 @@ out:
 void *__kmalloc_node(size_t size, gfp_t gfp, int node)
 {
        unsigned int *m;
-       int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
+       int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
        void *ret;
 
        gfp &= gfp_allowed_mask;
@@ -479,7 +479,7 @@ void kfree(const void *block)
 
        sp = virt_to_page(block);
        if (PageSlab(sp)) {
-               int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
+               int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, 
ARCH_SLAB_MINALIGN);
                unsigned int *m = (unsigned int *)(block - align);
                slob_free(m, *m + align);
        } else
@@ -498,7 +498,7 @@ size_t ksize(const void *block)
 
        sp = virt_to_page(block);
        if (PageSlab(sp)) {
-               int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
+               int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, 
ARCH_SLAB_MINALIGN);
                unsigned int *m = (unsigned int *)(block - align);
                return SLOB_UNITS(*m) * SLOB_UNIT;
        } else
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/