Commit Graph

2 Commits

Author SHA1 Message Date
Xin LI
7adb177693 MFp4: Several clean-ups and improvements over tmpfs:
- Remove tmpfs_zone_xxx KPI, the uma(9) wrapper, since
   they does not bring any value now.
 - Use |= instead of = when applying VV_ROOT flag.
 - Remove tm_avariable_nodes list.  Use uma to hold the
   released nodes.
 - init/destory interlock mutex of node when init/fini
   instead of ctor/dtor.
 - Change memory computing using u_int to fix negative
   value in 2G mem machine.
 - Remove unnecessary bzero's
 - Rely uma logic to make file id allocation harder to
   guess.
 - Fix some unsigned/signed related things.  Make sure
   we respect -o size=xxxx
 - Use wire instead of hold a page.
 - Pass allocate_zero to obtain zeroed pages upon first
   use.

Submitted by:	Howard Su
Approved by:	re (tmpfs blanket, kensmith)
2007-06-25 18:46:13 +00:00
Xin LI
d1fa59e9e1 MFp4: Add tmpfs, an efficient memory file system.
Please note that, this is currently considered as an
experimental feature so there could be some rough
edges.  Consult http://wiki.freebsd.org/TMPFS for
more information.

For now, connect tmpfs to build on i386 and amd64
architectures only.  Please let us know if you have
success with other platforms.

This work was developed by Julio M. Merino Vidal
for NetBSD as a SoC project; Rohit Jalan ported it
from NetBSD to FreeBSD.  Howard Su and Glen Leeder
are worked on it to continue this effort.

Obtained from:	NetBSD via p4
Submitted by:	Howard Su (with some minor changes)
Approved by:	re (kensmith)
2007-06-16 01:56:05 +00:00