[patch 083/166] mm/zsmalloc: add missing annotation for migrate_read_unlock()

Andrew Morton
2020-04-07T03:08:27Z

From: Jules Irenge <jbi.octave@gmail.com>
Subject: mm/zsmalloc: add missing annotation for migrate_read_unlock()

Sparse reports a warning at migrate_read_unlock()()

warning: context imbalance in migrate_read_unlock() - unexpected unlock

The root cause is the missing annotation at migrate_read_unlock()
Add the missing __releases(&zspage->lock) annotation

Link: http://lkml.kernel.org/r/20200214204741.94112-12-jbi.octave@gmail.com
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

mm/zsmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/zsmalloc.c~mm-zsmalloc-add-missing-annotation-for-migrate_read_unlock
+++ a/mm/zsmalloc.c
@@ -1838,7 +1838,7 @@ static void migrate_read_lock(struct zsp
read_lock(&zspage->lock);
}

-static void migrate_read_unlock(struct zspage *zspage)
+static void migrate_read_unlock(struct zspage *zspage) __releases(&zspage->lock)
{
read_unlock(&zspage->lock);
}
_