From: Jules Irenge <jbi.octave@xxxxxxxxx> Subject: mm/zsmalloc: add missing annotation for migrate_read_lock() Sparse reports a warning at migrate_read_lock()() warning: context imbalance in migrate_read_lock() - wrong count at exit The root cause is the missing annotation at migrate_read_lock() Add the missing __acquires(&zspage->lock) annotation Link: http://lkml.kernel.org/r/20200214204741.94112-11-jbi.octave@xxxxxxxxx Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx> Acked-by: Minchan Kim <minchan@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/zsmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/zsmalloc.c~mm-zsmalloc-add-missing-annotation-for-migrate_read_lock +++ a/mm/zsmalloc.c @@ -1833,7 +1833,7 @@ static void migrate_lock_init(struct zsp rwlock_init(&zspage->lock); } -static void migrate_read_lock(struct zspage *zspage) +static void migrate_read_lock(struct zspage *zspage) __acquires(&zspage->lock) { read_lock(&zspage->lock); } _
