[PATCH 2/2] selftests/mm: restore hidden hugetlb reservation scenarios

[Song Hu <husong@kylinos.cn>]

A stray 'continue' in the main loop of charge_reserved_hugetlb.sh made
the "more than reservation", "more than cgroup limit", and "multiple
cgroups" scenarios unreachable, so they never ran.

Remove it so the first two run again. The third,
run_multiple_cgroup_test(), is separately broken -- a backslash
line-continuation breaks its local declarations and its hugetlb
reservation accounting does not charge as expected -- and has never run
in CI; skip it explicitly with a comment until fixed. Also correct two
`[[ "$method" == 2"" ]]` typos (harmless empty-string concatenation)
to plain `2`.

Signed-off-by: Song Hu <husong@kylinos.cn>
---
 .../selftests/mm/charge_reserved_hugetlb.sh        | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh b/tools/testing/selftests/mm/charge_reserved_hugetlb.sh
index a1cfd3a349db..18b2f2060c61 100755
--- a/tools/testing/selftests/mm/charge_reserved_hugetlb.sh
+++ b/tools/testing/selftests/mm/charge_reserved_hugetlb.sh
@@ -439,11 +439,11 @@ for populate in "" "-o"; do
         fi
 
         # Skip populated shmem tests. Doesn't seem to be supported.
-        if [[ "$method" == 2"" ]] && [[ "$populate" == "-o" ]]; then
+        if [[ "$method" == 2 ]] && [[ "$populate" == "-o" ]]; then
           continue
         fi
 
-        if [[ "$method" == 2"" ]] && [[ "$reserve" == "-n" ]]; then
+        if [[ "$method" == 2 ]] && [[ "$reserve" == "-n" ]]; then
           continue
         fi
 
@@ -496,7 +496,6 @@ for populate in "" "-o"; do
         echo 'PASS'
 
         cleanup
-        continue
         echo
         echo
         echo
@@ -530,6 +529,15 @@ for populate in "" "-o"; do
 
         cleanup
 
+        # The "multiple cgroups" scenario (run_multiple_cgroup_test) is
+        # multiply broken and has never run in CI: a backslash
+        # line-continuation breaks its local declarations, it passes
+        # reservation sizes in bytes rather than pages (unlike
+        # run_test), and its assertions compare page counts to byte
+        # values. Skip it until properly rewritten; the two scenarios
+        # above are restored by this change.
+        continue
+
         echo
         echo
         echo
-- 
2.43.0