diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-08-21 18:39:12 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-03 21:15:43 -0700 |
| commit | 04cb7502a5d70a6ca230e8c24835dc7dccd39fa7 (patch) | |
| tree | 4c7473c3017dffe749b319a44d879d768c030338 /mm/Kconfig | |
| parent | 4ffca5a96678c9fe1a39ec1e9c8fd326b57ea8a7 (diff) | |
zsmalloc: use all available 24 bits of page_type
Now that we have an extra 8 bits, we don't need to limit ourselves to
supporting a 64KiB page size. I'm sure both Hexagon users are grateful,
but it does reduce complexity a little. We can also remove
reset_first_obj_offset() as calling __ClearPageZsmalloc() will now reset
all 32 bits of page_type.
Link: https://lkml.kernel.org/r/20240821173914.2270383-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 3936fe4d26d9..5946dcdcaeda 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -128,7 +128,7 @@ config ZSWAP_COMPRESSOR_DEFAULT choice prompt "Default allocator" depends on ZSWAP - default ZSWAP_ZPOOL_DEFAULT_ZSMALLOC if HAVE_ZSMALLOC + default ZSWAP_ZPOOL_DEFAULT_ZSMALLOC if MMU default ZSWAP_ZPOOL_DEFAULT_ZBUD help Selects the default allocator for the compressed cache for @@ -154,7 +154,6 @@ config ZSWAP_ZPOOL_DEFAULT_Z3FOLD config ZSWAP_ZPOOL_DEFAULT_ZSMALLOC bool "zsmalloc" - depends on HAVE_ZSMALLOC select ZSMALLOC help Use the zsmalloc allocator as the default allocator. @@ -187,15 +186,10 @@ config Z3FOLD page. It is a ZBUD derivative so the simplicity and determinism are still there. -config HAVE_ZSMALLOC - def_bool y - depends on MMU - depends on PAGE_SIZE_LESS_THAN_256KB # we want <= 64 KiB - config ZSMALLOC tristate prompt "N:1 compression allocator (zsmalloc)" if ZSWAP - depends on HAVE_ZSMALLOC + depends on MMU help zsmalloc is a slab-based memory allocator designed to store pages of various compression levels efficiently. It achieves |