The patch titled
Subject: mm/compaction: really limit compact_unevictable_allowed to 0 and 1
has been added to the -mm tree. Its filename is
really-limit-compact_unevictable_allowed-to-0-and-1.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/really-limit-compact_unevictable_allowed-to-0-and-1.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/really-limit-compact_unevictable_allowed-to-0-and-1.patch
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------------------------------------------------------
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Subject: mm/compaction: really limit compact_unevictable_allowed to 0 and 1
The proc file `compact_unevictable_allowed' should allow 0 and 1 only, the
`extra*' attribues have been set properly but without
proc_dointvec_minmax() as the `proc_handler' the limit will not be
enforced.
Use proc_dointvec_minmax() as the `proc_handler' to enfoce the valid
specified range.
Link: http://lkml.kernel.org/r/20200303202054.gsosv7fsx2ma3cic@xxxxxxxxxxxxx
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Luis Chamberlain <mcgrof@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Iurii Zaikin <yzaikin@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sysctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/sysctl.c~really-limit-compact_unevictable_allowed-to-0-and-1
+++ a/kernel/sysctl.c
@@ -1484,7 +1484,7 @@ static struct ctl_table vm_table[] = {
.data = &sysctl_compact_unevictable_allowed,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
_
Patches currently in -mm which might be from bigeasy@xxxxxxxxxxxxx are
mm-z3fold-do-not-include-rwlockh-directly.patch
really-limit-compact_unevictable_allowed-to-0-and-1.patch
mm-compaction-disable-compact_unevictable_allowed-on-rt.patch
