Commit 6e61dde8 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Linus Torvalds
Browse files

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: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1da0d94a

mm/Kconfig

+3 −15
Original line number Diff line number Diff line
@@ -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