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linux-sg2042
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3 Commits

Author SHA1 Message Date
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 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