[merged mm-stable] zram-change-scan_slots-to-return-void.patch removed from -mm tree

[merged mm-stable] zram-change-scan_slots-to-return-void.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: zram: change scan_slots to return void
has been removed from the -mm tree.  Its filename was
     zram-change-scan_slots-to-return-void.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@chromium.org>
Subject: zram: change scan_slots to return void
Date: Tue, 17 Mar 2026 12:23:19 +0900

scan_slots_for_writeback() and scan_slots_for_recompress() work in a "best
effort" fashion, if they cannot allocate memory for a new pp-slot
candidate they just return and post-processing selects slots that were
successfully scanned thus far.  scan_slots functions never return errors
and their callers never check the return status, so convert them to return
void.

Link: https://lkml.kernel.org/r/20260317032349.753645-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/block/zram/zram_drv.c |   14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

--- a/drivers/block/zram/zram_drv.c~zram-change-scan_slots-to-return-void
+++ a/drivers/block/zram/zram_drv.c
@@ -1196,9 +1196,9 @@ static int parse_mode(char *val, u32 *mo
 	return 0;
 }
 
-static int scan_slots_for_writeback(struct zram *zram, u32 mode,
-				    unsigned long lo, unsigned long hi,
-				    struct zram_pp_ctl *ctl)
+static void scan_slots_for_writeback(struct zram *zram, u32 mode,
+				     unsigned long lo, unsigned long hi,
+				     struct zram_pp_ctl *ctl)
 {
 	u32 index = lo;
 
@@ -1230,8 +1230,6 @@ next:
 			break;
 		index++;
 	}
-
-	return 0;
 }
 
 static ssize_t writeback_store(struct device *dev,
@@ -2368,8 +2366,8 @@ static bool highest_priority_algorithm(s
 	return true;
 }
 
-static int scan_slots_for_recompress(struct zram *zram, u32 mode, u32 prio,
-				     struct zram_pp_ctl *ctl)
+static void scan_slots_for_recompress(struct zram *zram, u32 mode, u32 prio,
+				      struct zram_pp_ctl *ctl)
 {
 	unsigned long nr_pages = zram->disksize >> PAGE_SHIFT;
 	unsigned long index;
@@ -2404,8 +2402,6 @@ next:
 		if (!ok)
 			break;
 	}
-
-	return 0;
 }
 
 /*
_

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