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[ Upstream commit9da33619e0] bitmap clear loop will take long time in __exfat_free_cluster() if data size of file/dir enty is invalid. If cluster bit in bitmap is already clear, stop clearing bitmap go to out of loop. Fixes:31023864e6("exfat: add fat entry operations") Reported-by: Kun Hu <huk23@m.fudan.edu.cn>, Jiaji Qin <jjtan24@m.fudan.edu.cn> Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>