Commit cfc451cf authored by Jules Irenge's avatar Jules Irenge Committed by Linus Torvalds
Browse files

mm/zsmalloc: add missing annotation for migrate_read_lock() 



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: default avatarJules Irenge <jbi.octave@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Acked-by: default avatarMinchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-11-jbi.octave@gmail.com


Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 81aba9e0

mm/zsmalloc.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

}