linux.git/fs/logfs/dev_mtd.c, branch v2.6.34 Linux kernel source tree [LogFS] Fix bdev erases 2010-03-04T20:30:58+00:00 Joern Engel joern@logfs.org 2010-03-04T20:30:58+00:00 9421502b4fc894cc477be8fc49776830e37ca157 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. 
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.
[LogFS] add new flash file system 2009-11-20T19:13:39+00:00 Joern Engel joern@logfs.org 2009-11-20T19:13:39+00:00 5db53f3e80dee2d9dff5e534f9e9fe1db17c9936 This is a new flash file system. See Documentation/filesystems/logfs.txt Signed-off-by: Joern Engel <joern@logfs.org> 
This is a new flash file system. See
Documentation/filesystems/logfs.txt

Signed-off-by: Joern Engel <joern@logfs.org>