[lvm-devel] [PATCH 04/12] Unlock memory for vg_write

[Zdenek Kabelac]

For write we do not need to hold memory locked.
We should never write metadata in locked state.
This relaxes meny conditions and avoid problems when allocating
a lot of memory for writting metadata buffers.
(In case of huge MDA size this would lead to mismatch between
locked and unlocked memory size).

Signed-off-by: Zdenek Kabelac <zkabelac at redhat.com>
---
 lib/metadata/metadata.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/lib/metadata/metadata.c b/lib/metadata/metadata.c
index 4037c0e..f9742e7 100644
--- a/lib/metadata/metadata.c
+++ b/lib/metadata/metadata.c
@@ -2573,6 +2573,8 @@ int vg_write(struct volume_group *vg)
 		return 0;
 	}
 
+	/* Unlock memory if possible */
+	memlock_unlock(vg->cmd);
 	vg->seqno++;
 
         dm_list_iterate_items(pv_to_create, &vg->pvs_to_create) {
-- 
1.7.7.3