aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/slub_def.h
diff options
context:
space:
mode:
authorChristoph Lameter <clameter@sgi.com>2007-05-06 17:49:38 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 15:12:53 -0400
commit614410d5892af5f86d0ec14e28f9f6d5f4ac9e9b (patch)
tree616c8437f45590a0ca6e2efdc2a5dfb61799d0ec /include/linux/slub_def.h
parent47bfdc0d5a18a4b760ffb6a332932aaa5c0859e0 (diff)
SLUB: allocate smallest object size if the user asks for 0 bytes
Makes SLUB behave like SLAB in this area to avoid issues.... Throw a stack dump to alert people. At some point the behavior should be switched back. NULL is no memory as far as I can tell and if the use asked for 0 bytes then he need to get no memory. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/slub_def.h')
-rw-r--r--include/linux/slub_def.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 30b154ce7289..f8e0c86c48a9 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -80,8 +80,12 @@ extern struct kmem_cache kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
80 */ 80 */
81static inline int kmalloc_index(int size) 81static inline int kmalloc_index(int size)
82{ 82{
83 if (size == 0) 83 /*
84 return 0; 84 * We should return 0 if size == 0 but we use the smallest object
85 * here for SLAB legacy reasons.
86 */
87 WARN_ON_ONCE(size == 0);
88
85 if (size > 64 && size <= 96) 89 if (size > 64 && size <= 96)
86 return 1; 90 return 1;
87 if (size > 128 && size <= 192) 91 if (size > 128 && size <= 192)