mainline inclusion
from mainline-5.5-rc1
commit a9a8344ee1714f835ba394077e8c13d751e2f148
category: bugfix
bugzilla: 25031
CVE: NA
---------------------------

Provide accessor function to get number of credits available in a handle
and use it from ext4. Later, computation of available credits won't be
so straightforward.
Reviewed-by: NTheodore Ts'o <tytso@mit.edu>
Signed-off-by: NJan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191105164437.32602-11-jack@suse.czSigned-off-by: NTheodore Ts'o <tytso@mit.edu>
Signed-off-by: Nzhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: NYang Erkun <yangerkun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>