nfsd4: don't destroy in-use session
This changes session destruction to be similar to client destruction in
that attempts to destroy a session while in use (which should be rare
corner cases) result in DELAY. This simplifies things somewhat and
helps meet a coming 4.2 requirement.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 07f8a82..f6ae4db 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -194,9 +194,11 @@
};
struct nfsd4_session {
- struct kref se_ref;
+ atomic_t se_ref;
struct list_head se_hash; /* hash by sessionid */
struct list_head se_perclnt;
+/* See SESSION4_PERSIST, etc. for standard flags; this is internal-only: */
+#define NFS4_SESSION_DEAD 0x010
u32 se_flags;
struct nfs4_client *se_client;
struct nfs4_sessionid se_sessionid;