The commit 026d0d27c488 (ext4: reduce computation of overhead during resize) reduces the time taken to resize large bigalloc filesystems(reduces 3+ hours to milliseconds for a 64TB FS). This is a good candidate to cherry-pick to stable releases. Kiselev, Oleg (1): ext4: reduce computation of overhead during resize fs/ext4/resize.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) -- 2.40.1.495.gc816e09b53d-goog