Hi all, This patch series adds a cache for the formatted names created by msdos_format_name(). In my testing, it resulted in approximately a 0.2 ms decrease in kernel time for listing a small directory. The overhead is in memory, but each entry is only 25 bytes plus sizeof(struct hlist_node), and the cache also actively collects infrequently used nodes, keeping overall memory usage low. Caleb D.S. Brzezinski (3): fat: define functions and data structures for a formatted name cache fat: add the msdos_format_name() filename cache fat: add hash machinery to relevant filesystem operations fs/fat/namei_msdos.c | 140 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) base-commit: 85a90500f9a1717c4e142ce92e6c1cb1a339ec78 -- 2.32.0
