GETATTR needs to return attributes protected by different bits, so we need to ensure all we have locks with all of those bits, not just UPDATE bit Signed-off-by: Alexey Lyashkov <alexey_lyashkov@xxxxxxxxxxx> Signed-off-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> Reviewed-on: http://review.whamcloud.com/6460 Xyratex-bug-id: MRP-1052 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3240 Reviewed-by: Dmitry Eremin <dmitry.eremin@xxxxxxxxx> Reviewed-by: wangdi <di.wang@xxxxxxxxx> Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> --- drivers/staging/lustre/lustre/mdc/mdc_locks.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/mdc/mdc_locks.c b/drivers/staging/lustre/lustre/mdc/mdc_locks.c index 288a41e..1336d47 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_locks.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_locks.c @@ -1061,7 +1061,20 @@ int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it, fid_build_reg_res_name(fid, &res_id); switch (it->it_op) { case IT_GETATTR: - policy.l_inodebits.bits = MDS_INODELOCK_UPDATE; + /* File attributes are held under multiple bits: + * nlink is under lookup lock, size and times are + * under UPDATE lock and recently we've also got + * a separate permissions lock for owner/group/acl that + * were protected by lookup lock before. + * Getattr must provide all of that information, + * so we need to ensure we have all of those locks. + * Unfortunately, if the bits are split across multiple + * locks, there's no easy way to match all of them here, + * so an extra RPC would be performed to fetch all + * of those bits at once for now. */ + policy.l_inodebits.bits = MDS_INODELOCK_UPDATE | + MDS_INODELOCK_LOOKUP | + MDS_INODELOCK_PERM; break; case IT_LAYOUT: policy.l_inodebits.bits = MDS_INODELOCK_LAYOUT; @@ -1070,6 +1083,7 @@ int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it, policy.l_inodebits.bits = MDS_INODELOCK_LOOKUP; break; } + mode = ldlm_lock_match(exp->exp_obd->obd_namespace, LDLM_FL_BLOCK_GRANTED, &res_id, LDLM_IBITS, &policy, -- 1.8.5.3 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
