"Storage manufacturers are getting ready to start shipping solid
state disks, and Linux-based devices like One Laptop per Child's XO
and Intel's Classmate don't contain standard hard disks. To improve
performance on the wide array of flash memory storage devices now
available, project leader Jërn Engel has announced LogFS, a
scalable filesystem specifically for flash devices.
"Linux users already have two mature flash filesystems to choose
from--JFFS2 and YAFFS--so why do they need another? Engel discounts
both of these options, for different reasons. Engel says that YAFFS
'has never made a serious attempt of kernel integration, which may
disqualify it' for many potential users..."