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| author | Arnd Bergmann <arnd@arndb.de> | 2012-08-05 15:00:58 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-10-09 21:56:28 +0200 |
| commit | baaf1dd491433a78826150aff7411015de7e9b65 (patch) | |
| tree | fc5430d64c1f8ec43797d70a72e9d5500615cfcd | |
| parent | 48968177312e01737c018fdb2430b703831cbc2e (diff) | |
| download | linux-stable-baaf1dd491433a78826150aff7411015de7e9b65.tar.gz linux-stable-baaf1dd491433a78826150aff7411015de7e9b65.tar.bz2 linux-stable-baaf1dd491433a78826150aff7411015de7e9b65.zip | |
mm/slob: use min_t() to compare ARCH_SLAB_MINALIGN
The definition of ARCH_SLAB_MINALIGN is architecture dependent
and can be either of type size_t or int. Comparing that value
with ARCH_KMALLOC_MINALIGN can cause harmless warnings on
platforms where they are different. Since both are always
small positive integer numbers, using the size_t type to compare
them is safe and gets rid of the warning.
Without this patch, building ARM collie_defconfig results in:
mm/slob.c: In function '__kmalloc_node':
mm/slob.c:431:152: warning: comparison of distinct pointer types lacks a cast [enabled by default]
mm/slob.c: In function 'kfree':
mm/slob.c:484:153: warning: comparison of distinct pointer types lacks a cast [enabled by default]
mm/slob.c: In function 'ksize':
mm/slob.c:503:153: warning: comparison of distinct pointer types lacks a cast [enabled by default]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
| -rw-r--r-- | mm/slob.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/slob.c b/mm/slob.c index 45d4ca79933a..497c55e318a1 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -428,7 +428,7 @@ 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; @@ -481,7 +481,7 @@ 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 @@ -500,7 +500,7 @@ 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 |