+ zram-modernize-writeback-interface-v3.patch added to mm-new branch

+ zram-modernize-writeback-interface-v3.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: zram: modernize writeback interface
has been added to the -mm mm-new branch.  Its filename is
     zram-modernize-writeback-interface-v3.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zram-modernize-writeback-interface-v3.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: zram: modernize writeback interface
Date: Fri, 4 Apr 2025 10:52:50 +0900

simplify parse_page_index() range checks, per Brian

Link: https://lkml.kernel.org/r/20250404015327.2427684-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Brian Geffon <bgeffon@google.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Richard Chang <richardycc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/block/zram/zram_drv.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/block/zram/zram_drv.c~zram-modernize-writeback-interface-v3
+++ a/drivers/block/zram/zram_drv.c
@@ -853,9 +853,9 @@ static int parse_page_index(char *val, u
 	ret = kstrtoul(val, 10, lo);
 	if (ret)
 		return ret;
-	*hi = *lo + 1;
-	if (*lo >= nr_pages || *hi > nr_pages)
+	if (*lo >= nr_pages)
 		return -ERANGE;
+	*hi = *lo + 1;
 	return 0;
 }
 
_

Patches currently in -mm which might be from senozhatsky@chromium.org are

zsmalloc-prefer-the-the-original-pages-node-for-compressed-data-fix.patch
zram-modernize-writeback-interface.patch
zram-modernize-writeback-interface-v3.patch