From: Jules Irenge <jbi.octave@xxxxxxxxx> Subject: mm/compaction: add missing annotation for compact_lock_irqsave Sparse reports a warning at compact_lock_irqsave() warning: context imbalance in compact_lock_irqsave() - wrong count at exit The root cause is the missing annotation at compact_lock_irqsave() Add the missing __acquires(lock) annotation. Link: http://lkml.kernel.org/r/20200214204741.94112-6-jbi.octave@xxxxxxxxx Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/compaction.c | 1 + 1 file changed, 1 insertion(+) --- a/mm/compaction.c~mm-compaction-add-missing-annotation-for-compact_lock_irqsave +++ a/mm/compaction.c @@ -481,6 +481,7 @@ static bool test_and_set_skip(struct com */ static bool compact_lock_irqsave(spinlock_t *lock, unsigned long *flags, struct compact_control *cc) + __acquires(lock) { /* Track if the lock is contended in async mode */ if (cc->mode == MIGRATE_ASYNC && !cc->contended) { _
