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mm/zsmalloc: add missing annotation for pin_tag()

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Sparse reports a warning at pin_tag()()

warning: context imbalance in pin_tag() - wrong count at exit

The root cause is the missing annotation at pin_tag()
Add the missing __acquires(bitlock) annotation

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-13-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jules Irenge 2020-04-06 20:08:27 -07:00 committed by Linus Torvalds
parent 8a374cccee
commit 70c7ec95be
1 changed files with 1 additions and 1 deletions
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2
mm/zsmalloc.c
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@ -891,7 +891,7 @@ static inline int trypin_tag(unsigned long handle)
return bit_spin_trylock(HANDLE_PIN_BIT, (unsigned long *)handle);
}
static void pin_tag(unsigned long handle)
static void pin_tag(unsigned long handle) __acquires(bitlock)
{
bit_spin_lock(HANDLE_PIN_BIT, (unsigned long *)handle);
}