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authorJoe Thornber <ejt@redhat.com>2013-03-01 22:45:50 +0000
committerAlasdair G Kergon <agk@redhat.com>2013-03-01 22:45:50 +0000
commit025b96853fe0bdc977d88b4242ca5e1f19d9bb66 (patch)
tree5bf111eac74bb2798495fd4975b0d8df72c8d351 /drivers/md/dm-bio-prison.c
parent6beca5eb6e801aea810da6cbc4990d96e6c1c0bc (diff)
downloadop-kernel-dev-025b96853fe0bdc977d88b4242ca5e1f19d9bb66.zip
op-kernel-dev-025b96853fe0bdc977d88b4242ca5e1f19d9bb66.tar.gz
dm thin: remove cells from stack
This patch takes advantage of the new bio-prison interface where the memory is now passed in rather than using a mempool in bio-prison. This allows the map function to avoid performing potentially-blocking allocations that could lead to deadlocks: We want to avoid the cell allocation that is done in bio_detain. (The potential for mempool deadlocks still remains in other functions that use bio_detain.) Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-bio-prison.c')
-rw-r--r--drivers/md/dm-bio-prison.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/md/dm-bio-prison.c b/drivers/md/dm-bio-prison.c
index ca5771d..144067c 100644
--- a/drivers/md/dm-bio-prison.c
+++ b/drivers/md/dm-bio-prison.c
@@ -14,13 +14,6 @@
/*----------------------------------------------------------------*/
-struct dm_bio_prison_cell {
- struct hlist_node list;
- struct dm_cell_key key;
- struct bio *holder;
- struct bio_list bios;
-};
-
struct dm_bio_prison {
spinlock_t lock;
mempool_t *cell_pool;
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