Take an extra reference on a device insert. So devices keep
around in the cache until nfs_client release.
(This was the behaviour of the old cache)
The extra reference will be removed in nfs4_deviceid_purge_client().
I tested this and it works perfectly.
TODO: Define an nfs4_get_deviceid()
Currently accessing did->ref directly
TODO: nfs4_insert_deviceid_node should check if there are too many
devices and start purging them. Say by longest time from last use.
Signed-off-by: Boaz Harrosh <bharrosh@xxxxxxxxxxx>
---
fs/nfs/objlayout/objio_osd.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c
index c09066f..47e8cb5 100644
--- a/fs/nfs/objlayout/objio_osd.c
+++ b/fs/nfs/objlayout/objio_osd.c
@@ -110,6 +110,7 @@ _dev_list_add(const struct nfs_server *nfss,
de = n;
}
+ atomic_inc(&de->id_node.ref);
return de;
}
--
1.7.2.3
--
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