Commit Graph

159 Commits

Author SHA1 Message Date
Joern Engel c2f843f03d [LogFS] Change magic number
Many changes were made during development that could result in old
versions of mklogfs and the kernel code being subtly incompatible.
Not being a friend of subtleties, I hereby change the magic number.
Any old version of mklogfs is now guaranteed to fail.
2010-03-06 10:03:11 +01:00
Joern Engel 9cf05b416d [LogFS] Remove h_version field
Incompatible change: h_compr is moved up so the padding is all in one chunk.
2010-03-06 10:01:46 +01:00
Joern Engel 6a08ab846c [LogFS] Check feature flags 2010-03-05 16:07:04 +01:00
Joern Engel c6d3830140 [LogFS] Only write journal if dirty
This prevents unnecessary journal writes.  More importantly it prevents
an oops due to a journal write on failed mount.
2010-03-04 21:36:19 +01:00
Joern Engel 9421502b4f [LogFS] Fix bdev erases
Erases for block devices were always just emulated by writing 0xff.
Some time back the write was removed and only the page cache was
changed to 0xff.  Superficialy a good idea with two problems:
1. Touching the page cache isn't necessary either.
2. However, writing out 0xff _is_ necessary for the journal.  As the
   journal is scanned linearly, an old non-overwritten commit entry
   can be used on next mount and cause havoc.

This should fix both aspects.
2010-03-04 21:30:58 +01:00
Joern Engel 5c564c2a04 [LogFS] Silence gcc
Andrew Morton sayeth:
fs/logfs/journal.c: In function 'logfs_init_journal':
fs/logfs/journal.c:266: warning: 'last_len' may be used uninitialized in this function

Can this be squished please?
2009-12-07 12:34:43 +01:00
Joern Engel 30835cd074 [LogFS] Prevent 64bit divisions in hash_index
Randy Dunlap caught this built error on i386:

fs/built-in.o: In function `hash_index':
dir.c:(.text+0x6c1f2): undefined reference to `__umoddi3'
2009-11-28 13:14:08 +01:00
Joern Engel ddfd1f04b7 [LogFS] Plug memory leak on error paths
Spotted by Dan Carpenter.
2009-11-23 14:29:12 +01:00
Joern Engel 5db53f3e80 [LogFS] add new flash file system
This is a new flash file system. See
Documentation/filesystems/logfs.txt

Signed-off-by: Joern Engel <joern@logfs.org>
2009-11-20 20:13:39 +01:00