From ee18026ac69efba804144541171299efd41747d2 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Fri, 21 Dec 2012 20:23:41 +0000 Subject: [PATCH] dm snapshot: do not use map_context Eliminate struct map_info from dm-snap. map_info->ptr was used in dm-snap to indicate if the bio was tracked. If map_info->ptr was non-NULL, the bio was linked in tracked_chunk_hash. This patch removes the use of map_info->ptr. We determine if the bio was tracked based on hlist_unhashed(&c->node). If hlist_unhashed is true, the bio is not tracked, if it is false, the bio is tracked. Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon --- Reading git-format-patch failed