From: Seth Jennings Date: Mon, 2 Jul 2012 21:15:51 +0000 (-0500) Subject: staging: zsmalloc: add details to zs_map_object boiler plate X-Git-Tag: master-2012-08-06~83^2~365 X-Git-Url: http://pileus.org/git/?a=commitdiff_plain;h=166cfda752ca22eb6912614993b85f9a997dbd8f;p=~andy%2Flinux staging: zsmalloc: add details to zs_map_object boiler plate Add information on the usage limits of zs_map_object() Signed-off-by: Seth Jennings Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/drivers/staging/zsmalloc/zsmalloc-main.c index 4942d419074..abf7c13c89c 100644 --- a/drivers/staging/zsmalloc/zsmalloc-main.c +++ b/drivers/staging/zsmalloc/zsmalloc-main.c @@ -747,7 +747,12 @@ EXPORT_SYMBOL_GPL(zs_free); * * Before using an object allocated from zs_malloc, it must be mapped using * this function. When done with the object, it must be unmapped using - * zs_unmap_object + * zs_unmap_object. + * + * Only one object can be mapped per cpu at a time. There is no protection + * against nested mappings. + * + * This function returns with preemption and page faults disabled. */ void *zs_map_object(struct zs_pool *pool, unsigned long handle) {