From: Christoph Hellwig Date: Sat, 22 Jan 2022 06:15:14 +0000 (-0800) Subject: mm: hide the FRONTSWAP Kconfig symbol X-Git-Tag: baikal/mips/sdk6.1~6565^2 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=32707169789916b5499efbddf8a07ddbc8c31007;p=kernel.git mm: hide the FRONTSWAP Kconfig symbol Select FRONTSWAP from ZSWAP instead of prompting for it. Link: https://lkml.kernel.org/r/20211224062246.1258487-14-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Juergen Gross Cc: Dan Streetman Cc: Geert Uytterhoeven Cc: Hugh Dickins Cc: Konrad Rzeszutek Wilk Cc: Matthew Wilcox (Oracle) Cc: Seth Jennings Cc: Vitaly Wool Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/Kconfig b/mm/Kconfig index 430240289b02b..3326ee3903f33 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -445,20 +445,7 @@ config HAVE_SETUP_PER_CPU_AREA bool config FRONTSWAP - bool "Enable frontswap to cache swap pages if tmem is present" - depends on SWAP - help - Frontswap is so named because it can be thought of as the opposite - of a "backing" store for a swap device. The data is stored into - "transcendent memory", memory that is not directly accessible or - addressable by the kernel and is of unknown and possibly - time-varying size. When space in transcendent memory is available, - a significant swap I/O reduction may be achieved. When none is - available, all frontswap calls are reduced to a single pointer- - compare-against-NULL resulting in a negligible performance hit - and swap data is stored as normal on the matching swap device. - - If unsure, say Y to enable frontswap. + bool config CMA bool "Contiguous Memory Allocator" @@ -523,7 +510,8 @@ config MEM_SOFT_DIRTY config ZSWAP bool "Compressed cache for swap pages (EXPERIMENTAL)" - depends on FRONTSWAP && CRYPTO=y + depends on SWAP && CRYPTO=y + select FRONTSWAP select ZPOOL help A lightweight compressed cache for swap pages. It takes