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authorJoe Thornber <ejt@redhat.com>2012-03-28 18:41:28 +0100
committerAlasdair G Kergon <agk@redhat.com>2012-03-28 18:41:28 +0100
commiteb2aa48d4eb7aee63cba201bf47641dad3e92250 (patch)
tree3e160010319f6c4eb30770d07d6fb089955f5704 /kernel/nsproxy.c
parent6efd6e83092cd4a7532270bc843de90bb93f6683 (diff)
dm thin: prepare to support discard
This patch contains the ground work needed for dm-thin to support discard. - Adds endio function that replaces shared_read_endio. - Introduce an explicit 'quiesced' flag into the new_mapping structure. Before, this was implicitly indicated by m->list being empty. - The map_info->ptr remains constant for the duration of a bio's trip through the thin target. Make it easier to reason about it. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'kernel/nsproxy.c')
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