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LU-12120 grants: prevent negative ted_grant value
[fs/lustre-release.git]
/
lustre
/
target
/
tgt_grant.c
diff --git
a/lustre/target/tgt_grant.c
b/lustre/target/tgt_grant.c
index
f6ee8d1
..
e832bc9
100644
(file)
--- a/
lustre/target/tgt_grant.c
+++ b/
lustre/target/tgt_grant.c
@@
-605,6
+605,14
@@
static void tgt_grant_shrink(struct obd_export *exp, struct obdo *oa,
grant_shrink = oa->o_grant;
grant_shrink = oa->o_grant;
+ if (ted->ted_grant < grant_shrink) {
+ CDEBUG(D_CACHE,
+ "%s: cli %s/%p wants %lu shrinked > grant %lu\n",
+ obd->obd_name, exp->exp_client_uuid.uuid, exp,
+ grant_shrink, ted->ted_grant);
+ grant_shrink = ted->ted_grant;
+ }
+
ted->ted_grant -= grant_shrink;
tgd->tgd_tot_granted -= grant_shrink;
ted->ted_grant -= grant_shrink;
tgd->tgd_tot_granted -= grant_shrink;