mm: strictly check vmstat_text array size

Browse source

/proc/vmstat displays counters from various sources.  It is easy to forget
to add or remove a label when a new counter is added or removed.

There is a BUILD_BUG_ON() function that catches missing labels.  However,
for some reason, it ignores extra labels.

Let's make the check strict.  This would help to catch issues when a
counter is removed.

Link: https://lkml.kernel.org/r/20250529110541.2960330-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Kirill A. Shutemov 2025-05-29 14:05:41 +03:00 • committed by Andrew Morton

parent fdc5001b00

commit 8a63ff68e5

1 changed files with 1 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

mm/vmstat.c

View file