The nfsdcltrack upcall doesn't utilize the NFSD4_CLIENT_STABLE flag,
which basically results in an upcall every time we call into the client
tracking ops.
Change it to set this bit on a successful "check" or "create" request,
and clear it on a "remove" request. Also, check to see if that bit is
set before upcalling on a "check" or "remove" request, and skip
upcalling appropriately, depending on its state.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxxxxxxx>
---
fs/nfsd/nfs4recover.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index ae313861a6f5..5697e9d2e875 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -1291,7 +1291,8 @@ nfsd4_umh_cltrack_create(struct nfs4_client *clp)
grace_start = nfsd4_cltrack_grace_start(nn->boot_time);
nfsd4_cltrack_upcall_lock(clp);
- nfsd4_umh_cltrack_upcall("create", hexid, reclaim_complete, grace_start);
+ if (!nfsd4_umh_cltrack_upcall("create", hexid, reclaim_complete, grace_start))
+ set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
nfsd4_cltrack_upcall_unlock(clp);
kfree(reclaim_complete);
@@ -1304,6 +1305,9 @@ nfsd4_umh_cltrack_remove(struct nfs4_client *clp)
{
char *hexid;
+ if (!test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return;
+
hexid = bin_to_hex_dup(clp->cl_name.data, clp->cl_name.len);
if (!hexid) {
dprintk("%s: can't allocate memory for upcall!\n", __func__);
@@ -1311,7 +1315,9 @@ nfsd4_umh_cltrack_remove(struct nfs4_client *clp)
}
nfsd4_cltrack_upcall_lock(clp);
- nfsd4_umh_cltrack_upcall("remove", hexid, NULL, NULL);
+ if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags) &&
+ nfsd4_umh_cltrack_upcall("remove", hexid, NULL, NULL) == 0)
+ clear_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
nfsd4_cltrack_upcall_unlock(clp);
kfree(hexid);
@@ -1323,6 +1329,9 @@ nfsd4_umh_cltrack_check(struct nfs4_client *clp)
int ret;
char *hexid, *legacy;
+ if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags))
+ return 0;
+
hexid = bin_to_hex_dup(clp->cl_name.data, clp->cl_name.len);
if (!hexid) {
dprintk("%s: can't allocate memory for upcall!\n", __func__);
@@ -1331,9 +1340,14 @@ nfsd4_umh_cltrack_check(struct nfs4_client *clp)
legacy = nfsd4_cltrack_legacy_recdir(&clp->cl_name);
nfsd4_cltrack_upcall_lock(clp);
- ret = nfsd4_umh_cltrack_upcall("check", hexid, legacy, NULL);
+ if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) {
+ ret = 0;
+ } else {
+ ret = nfsd4_umh_cltrack_upcall("check", hexid, legacy, NULL);
+ if (!ret)
+ set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags);
+ }
nfsd4_cltrack_upcall_unlock(clp);
-
kfree(legacy);
kfree(hexid);
return ret;
--
1.9.3
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