ST M25P128 and JFFS2

Hi experts,
I intend to use (part of) an ST M25P128 serial flash chip for a file
system with JFFS2 on µCLinux. It is intended to (1) hold information
that is only manually updated and (2) to collect data that comes in in
small amounts and is intended to stay for quite a long time.

Is there any known drawback ?

Is there an MTD driver for SPI flash that I can modify to be used with
my hardware ? (I suppose I don't need to modify the JFFS2 driver.)

Thanks for any answers,

-Michael