+ zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

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@chromium.org>
Subject: zsmalloc: break out of loop when found perfect zspage order
Date: Thu, 27 Oct 2022 13:26:51 +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/20221027042651.234524-10-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Alexey Romanov <avromanov@sberdevices.ru>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/mm/zsmalloc.c~zsmalloc-break-out-of-loop-when-found-perfect-zspage-order
+++ a/mm/zsmalloc.c
@@ -787,6 +787,9 @@ static int get_pages_per_zspage(u32 clas
 			max_usedpc = usedpc;
 			max_usedpc_order = i;
 		}
+
+		if (usedpc == 100)
+			break;
 	}
 
 	return max_usedpc_order;
_

Patches currently in -mm which might be from senozhatsky@chromium.org 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-move-away-from-page-order-defines.patch
zsmalloc-make-huge-class-watermark-zs_pool-member.patch
zram-huge-size-watermark-cannot-be-global.patch
zsmalloc-pass-limit-on-pages-per-zspage-to-zs_create_pool.patch
zram-add-pages_per_pool_page-device-attribute.patch
documentation-document-zram-pages_per_pool_page-attribute.patch
zsmalloc-break-out-of-loop-when-found-perfect-zspage-order.patch