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mm/zsmalloc: add missing annotation for migrate_read_lock()

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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

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/20200214204741.94112-11-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jules Irenge 2020-04-06 20:08:21 -07:00 committed by Linus Torvalds
parent 81aba9e06b
commit cfc451cfdf
1 changed files with 1 additions and 1 deletions
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2
mm/zsmalloc.c
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@ -1833,7 +1833,7 @@ static void migrate_lock_init(struct zspage *zspage)
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);
}