[patch 085/166] mm/zsmalloc: add missing annotation for unpin_tag()

Andrew Morton
2020-04-07T03:08:33Z

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

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

Link: http://lkml.kernel.org/r/20200214204741.94112-14-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-unpin_tag
+++ a/mm/zsmalloc.c
@@ -896,7 +896,7 @@ static void pin_tag(unsigned long handle
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);
}
_