The quilt patch titled Subject: zram: tweak writeback config help has been removed from the -mm tree. Its filename was zram-tweak-writeback-config-help.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> Subject: zram: tweak writeback config help Date: Wed, 15 Nov 2023 11:42:13 +0900 Writeback is for incompressible and idle zram pages. Link: https://lkml.kernel.org/r/20231115024223.4133148-2-senozhatsky@xxxxxxxxxxxx Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> Cc: Minchan Kim <minchan@xxxxxxxxxx> Cc: Dmytro Maluka <dmaluka@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/block/zram/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/block/zram/Kconfig~zram-tweak-writeback-config-help +++ a/drivers/block/zram/Kconfig @@ -59,8 +59,8 @@ config ZRAM_WRITEBACK bool "Write back incompressible or idle page to backing device" depends on ZRAM help - With incompressible page, there is no memory saving to keep it - in memory. Instead, write it out to backing device. + This lets zram entries (incompressible or idle pages) be written + back to a backing device, helping save memory. For this feature, admin should set up backing device via /sys/block/zramX/backing_dev. _ Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are checkpatch-do-not-require-an-empty-line-before-error-injection.patch