From e384e58549a2e9a83071ad80280c1a9053cfd84c Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 1 Jun 2010 19:37:34 +1000 Subject: [PATCH] md/bitmap: prepare for storing write-intent-bitmap via dm-dirty-log. This allows md/raid5 to fully work as a dm target. Normally md uses a 'filemap' which contains a list of pages of bits each of which may be written separately. dm-log uses and all-or-nothing approach to writing the log, so when using a dm-log, ->filemap is NULL and the flags normally stored in filemap_attr are stored in ->logattrs instead. Signed-off-by: NeilBrown --- Reading git-format-patch failed