The patch titled
Subject: zsmalloc: break out of loop when found perfect zspage order
has been added to the -mm mm-unstable branch. Its filename is
zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zsmalloc: break out of loop when found perfect zspage order
Date: Tue, 25 Oct 2022 01:12:12 +0900
If we found zspage configuration that gives us perfect 100% used
percentage (zero wasted space) then there is no point it trying any other
configuration
Link: https://lkml.kernel.org/r/20221024161213.3221725-6-senozhatsky@xxxxxxxxxxxx
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Nitin Gupta <ngupta@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 3 +++
1 file changed, 3 insertions(+)
--- a/mm/zsmalloc.c~zsmalloc-break-out-of-loop-when-found-perfect-zspage-order
+++ a/mm/zsmalloc.c
@@ -790,6 +790,9 @@ static int get_pages_per_zspage(struct z
max_usedpc = usedpc;
max_usedpc_order = i;
}
+
+ if (usedpc == 100)
+ break;
}
return max_usedpc_order;
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
zram-preparation-for-multi-zcomp-support.patch
zram-add-recompression-algorithm-sysfs-knob.patch
zram-factor-out-wb-and-non-wb-zram-read-functions.patch
zram-introduce-recompress-sysfs-knob.patch
documentation-add-recompression-documentation.patch
zram-add-recompression-algorithm-choice-to-kconfig.patch
zram-add-recompress-flag-to-read_block_state.patch
zram-clarify-writeback_store-comment.patch
zram-use-is_err_value-to-check-for-zs_malloc-errors.patch
zsmalloc-turn-zspage-order-into-runtime-variable.patch
zsmalloc-zram-pass-zspage-order-to-zs_create_pool.patch
zram-add-pool_page_order-device-attribute.patch
documentation-document-zram-pool_page_order-attribute.patch
zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch
zsmalloc-make-sure-we-select-best-zspage-size.patch
