The patch titled
Subject: zram: do not lookup algorithm in backends table
has been added to the -mm mm-unstable branch. Its filename is
zram-do-not-lookup-algorithm-in-backends-table-v2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zram-do-not-lookup-algorithm-in-backends-table-v2.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: zram: do not lookup algorithm in backends table
Date: Fri, 24 Jun 2022 15:06:06 +0900
add comment
Link: https://lkml.kernel.org/r/20220624060606.1014474-1-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>
---
drivers/block/zram/zcomp.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/block/zram/zcomp.c~zram-do-not-lookup-algorithm-in-backends-table-v2
+++ a/drivers/block/zram/zcomp.c
@@ -211,6 +211,11 @@ struct zcomp *zcomp_create(const char *c
struct zcomp *comp;
int error;
+ /*
+ * Crypto API will execute /sbin/modprobe if the compression module
+ * is not loaded yet. We must do it here, otherwise we are about to
+ * call /sbin/modprobe under CPU hot-plug lock.
+ */
if (!zcomp_available_algorithm(compress))
return ERR_PTR(-EINVAL);
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
zram-do-not-lookup-algorithm-in-backends-table.patch
zram-do-not-lookup-algorithm-in-backends-table-v2.patch
