From: Joonsoo Kim Date: Mon, 2 Dec 2013 08:49:41 +0000 (+0900) Subject: slab: restrict the number of objects in a slab X-Git-Tag: v3.15-rc1~3^2~7 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f315e3fa1cf5b3317fc948708645fff889ce1e63;p=pandora-kernel.git slab: restrict the number of objects in a slab To prepare to implement byte sized index for managing the freelist of a slab, we should restrict the number of objects in a slab to be less or equal to 256, since byte only represent 256 different values. Setting the size of object to value equal or more than newly introduced SLAB_OBJ_MIN_SIZE ensures that the number of objects in a slab is less or equal to 256 for a slab with 1 page. If page size is rather larger than 4096, above assumption would be wrong. In this case, we would fall back on 2 bytes sized index. If minimum size of kmalloc is less than 16, we use it as minimum object size and give up this optimization. Signed-off-by: Joonsoo Kim Signed-off-by: Pekka Enberg --- Reading git-diff-tree failed