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| author | NeilBrown <neilb@suse.de> | 2022-03-07 10:41:44 +1100 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-03-13 12:59:35 -0400 |
| commit | 4dc73c679114a2f408567e2e44770ed934190db2 (patch) | |
| tree | d3ba3f6bab7ad6682066ac22c41d8dc384f70581 /net | |
| parent | 8db55a032ac7ac1ed7b98d6b1dc980e6378c652f (diff) | |
| download | linux-stable-4dc73c679114a2f408567e2e44770ed934190db2.tar.gz linux-stable-4dc73c679114a2f408567e2e44770ed934190db2.tar.bz2 linux-stable-4dc73c679114a2f408567e2e44770ed934190db2.zip | |
NFSv4: keep state manager thread active if swap is enabled
If we are swapping over NFSv4, we may not be able to allocate memory to
start the state-manager thread at the time when we need it.
So keep it always running when swap is enabled, and just signal it to
start.
This requires updating and testing the cl_swapper count on the root
rpc_clnt after following all ->cl_parent links.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/clnt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 4117ea4caa2e..0f54a56d19d2 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -3069,6 +3069,8 @@ rpc_clnt_swap_activate_callback(struct rpc_clnt *clnt, int rpc_clnt_swap_activate(struct rpc_clnt *clnt) { + while (clnt != clnt->cl_parent) + clnt = clnt->cl_parent; if (atomic_inc_return(&clnt->cl_swapper) == 1) return rpc_clnt_iterate_for_each_xprt(clnt, rpc_clnt_swap_activate_callback, NULL); |