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writeback: fix call of incorrect macro 

[ Upstream commit 3e46c89c74 ]

 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: 2a81490811 ("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>
This commit is contained in:
Maxim Korotkov 2023-01-19 13:44:43 +03:00 committed by Greg Kroah-Hartman
parent ebd12b9446
commit f5548a4589
1 changed files with 1 additions and 1 deletions
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2
fs/fs-writeback.c
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@ -702,7 +702,7 @@ void wbc_detach_inode(struct writeback_control *wbc)
* is okay. The main goal is avoiding keeping an inode on
* the wrong wb for an extended period of time.
*/
if (hweight32(history) > WB_FRN_HIST_THR_SLOTS)
if (hweight16(history) > WB_FRN_HIST_THR_SLOTS)
inode_switch_wbs(inode, max_id);
}