[merged mm-stable] mm-damon-sysfs-prohibit-multiple-physical-address-space-monitoring-targets.patch removed from -mm tree

[merged mm-stable] mm-damon-sysfs-prohibit-multiple-physical-address-space-monitoring-targets.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/damon/sysfs: prohibit multiple physical address space monitoring targets
has been removed from the -mm tree.  Its filename was
     mm-damon-sysfs-prohibit-multiple-physical-address-space-monitoring-targets.patch

This patch was dropped because it was merged into mm-stable

------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: mm/damon/sysfs: prohibit multiple physical address space monitoring targets

Having multiple targets for physical address space monitoring makes no
sense.  This commit prohibits such a ridiculous DAMON context setup my
making the DAMON context build function to check and return an error for
the case.

Link: https://lkml.kernel.org/r/20220429160606.127307-7-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/damon/sysfs.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/mm/damon/sysfs.c~mm-damon-sysfs-prohibit-multiple-physical-address-space-monitoring-targets
+++ a/mm/damon/sysfs.c
@@ -2125,6 +2125,10 @@ static int damon_sysfs_set_targets(struc
 {
 	int i, err;
 
+	/* Multiple physical address space monitoring targets makes no sense */
+	if (ctx->ops.id == DAMON_OPS_PADDR && sysfs_targets->nr > 1)
+		return -EINVAL;
+
 	for (i = 0; i < sysfs_targets->nr; i++) {
 		struct damon_sysfs_target *sys_target =
 			sysfs_targets->targets_arr[i];
_

Patches currently in -mm which might be from sj@kernel.org are