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NFSv4.1: nfs4_destroy_session must call rpc_destroy_waitqueue

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There may still be timers active on the session waitqueues. Make sure
that we kill them before freeing the memory.

Cc: stable@vger.kernel.org # 3.12+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2014-02-01 13:47:06 -05:00
parent 17ead6c85c
commit 20b9a90245
3 changed files with 22 additions and 7 deletions
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25
fs/nfs/nfs4session.c
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@@ -231,14 +231,23 @@ out:
return ret;
}
/*
* nfs4_release_slot_table - release all slot table entries
*/
static void nfs4_release_slot_table(struct nfs4_slot_table *tbl)
{
nfs4_shrink_slot_table(tbl, 0);
}
/**
* nfs4_release_slot_table - release resources attached to a slot table
* nfs4_shutdown_slot_table - release resources attached to a slot table
* @tbl: slot table to shut down
*
*/
void nfs4_release_slot_table(struct nfs4_slot_table *tbl)
void nfs4_shutdown_slot_table(struct nfs4_slot_table *tbl)
{
nfs4_shrink_slot_table(tbl, 0);
nfs4_release_slot_table(tbl);
rpc_destroy_wait_queue(&tbl->slot_tbl_waitq);
}
/**
@@ -422,7 +431,7 @@ void nfs41_update_target_slotid(struct nfs4_slot_table *tbl,
spin_unlock(&tbl->slot_tbl_lock);
}
static void nfs4_destroy_session_slot_tables(struct nfs4_session *session)
static void nfs4_release_session_slot_tables(struct nfs4_session *session)
{
nfs4_release_slot_table(&session->fc_slot_table);
nfs4_release_slot_table(&session->bc_slot_table);
@@ -450,7 +459,7 @@ int nfs4_setup_session_slot_tables(struct nfs4_session *ses)
if (status && tbl->slots == NULL)
/* Fore and back channel share a connection so get
* both slot tables or neither */
nfs4_destroy_session_slot_tables(ses);
nfs4_release_session_slot_tables(ses);
return status;
}
@@ -470,6 +479,12 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
return session;
}
static void nfs4_destroy_session_slot_tables(struct nfs4_session *session)
{
nfs4_shutdown_slot_table(&session->fc_slot_table);
nfs4_shutdown_slot_table(&session->bc_slot_table);
}
void nfs4_destroy_session(struct nfs4_session *session)
{
struct rpc_xprt *xprt;