writeback: fix call of incorrect macro

stable inclusion
from stable-v5.10.180
commit 3b7798b42e1da6bbea70e6b09c41829865014f25
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8FC2O

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3b7798b42e1da6bbea70e6b09c41829865014f25



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[ Upstream commit 3e46c89c ]

 the variable 'history' is of type u16, it may be an error
 that the hweight32 macro was used for it
 I guess macro hweight16 should be used

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 2a814908 ("writeback: implement foreign cgroup inode detection")
Signed-off-by: Maxim Korotkov <korotkov.maxim.s@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230119104443.3002-1-korotkov.maxim.s@gmail.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>