[PATCH 13/30] mm/zsmalloc: Add missing annotation for unpin_tag()

From: Jules Irenge
Date: Fri Feb 14 2020 - 15:48:59 EST


Sparse reports a warning at unpin_tag()()

warning: context imbalance in unpin_tag() - unexpected unlock

The root cause is the missing annotation at unpin_tag()
Add the missing __releases(bitlock) annotation

Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx>
---
mm/zsmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 7bac76ae11b3..2aa2d524a343 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -896,7 +896,7 @@ static void pin_tag(unsigned long handle) __acquires(bitlock)
bit_spin_lock(HANDLE_PIN_BIT, (unsigned long *)handle);
}

-static void unpin_tag(unsigned long handle)
+static void unpin_tag(unsigned long handle) __releases(bitlock)
{
bit_spin_unlock(HANDLE_PIN_BIT, (unsigned long *)handle);
}
--
2.24.1