Logfs has been around a couple of times. Linus last word was "go and don't come back until all format changes are done". Or something along those lines at least. Format changes are done. And I don't even intend to break git-bisect for anyone crazy enough to use logfs for /. But then again, logfs doesn't have the hype of btrfs, nor does it deserve it. Most controversial bit (for me, at least) is the btree code. It is generic enough to be used by others as well, but last time I checked, rbtree performed better. So unless someone (me?) spends some time to see what's going on, a short-term option would be to move it all under fs/logfs/, making it unavailable for others and remove it completely unless good arguments are found in favor. Patch 18 is a bonus for anyone lucky enough to have a decent device. For those not too familiar with mtd - all mtd operations are synchronous. Which makes the interface horribly slow on devices that support asynchronous operations, queueing or even parallel operations on multiple chips. I have a prototype device that shows promise, along with the usual problems of prototypes. So together with the paper-thin infrastructure patch [1] and a decent device, that patch allows logfs to make several thousand IO/s. Mails are purely for review and comments. If this is deemed merge-ready, please the git tree at http://git.kernel.org/?p=linux/kernel/git/joern/logfs.git instead. [1] http://lists.infradead.org/pipermail/linux-mtd/2009-November/028065.html Documentation/filesystems/00-INDEX | 2 + Documentation/filesystems/logfs.txt | 241 ++++ fs/Kconfig | 1 + fs/Makefile | 1 + fs/logfs/Kconfig | 17 + fs/logfs/Makefile | 13 + fs/logfs/compr.c | 95 ++ fs/logfs/dev_bdev.c | 263 ++++ fs/logfs/dev_mtd.c | 253 ++++ fs/logfs/dir.c | 818 +++++++++++++ fs/logfs/file.c | 263 ++++ fs/logfs/gc.c | 730 ++++++++++++ fs/logfs/inode.c | 417 +++++++ fs/logfs/journal.c | 879 ++++++++++++++ fs/logfs/logfs.h | 722 +++++++++++ fs/logfs/logfs_abi.h | 627 ++++++++++ fs/logfs/readwrite.c | 2246 +++++++++++++++++++++++++++++++++++ fs/logfs/segment.c | 924 ++++++++++++++ fs/logfs/super.c | 634 ++++++++++ include/linux/btree-128.h | 109 ++ include/linux/btree-type.h | 147 +++ include/linux/btree.h | 243 ++++ lib/Kconfig | 3 + lib/Makefile | 1 + lib/btree.c | 797 +++++++++++++ 25 files changed, 10446 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
