diff options
| author |   Alexey Lyashkov <alexey_lyashkov@xyratex.com> | 2014-02-28 21:16:34 -0500 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-28 19:11:20 -0800 |
| commit | 6caea2f980ac446427b891b9681386cb10d636d7 (patch) | |
| tree | 35127a04b31ebb15603655bf880036e07fa91acd | |
| parent | lustre/mdc: comments on LOOKUP and PERM lock (diff) | |
lustre/mdc: use ibits_known mask for lock match
Before revalidating a lock on the client, mask the lock bits against
the lock bits supported by the server (ibits_known), so newer clients
will find valid locks given by older server versions.
Signed-off-by: Patrick Farrell <paf@cray.com>
Signed-off-by: Alexey Lyashkov <alexey_lyashkov@xyratex.com>
Reviewed-on: http://review.whamcloud.com/8636
Xyratex-bug-id: MRP-1583
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4405
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/lustre/lustre/include/lustre_export.h | 8 | ||||
| -rw-r--r-- | drivers/staging/lustre/lustre/mdc/mdc_locks.c | 8 |
2 files changed, 13 insertions, 3 deletions
diff --git a/drivers/staging/lustre/lustre/include/lustre_export.h b/drivers/staging/lustre/lustre/include/lustre_export.h index 2feb38b51af2..82a230be732d 100644 --- a/drivers/staging/lustre/lustre/include/lustre_export.h +++ b/drivers/staging/lustre/lustre/include/lustre_export.h @@ -380,6 +380,14 @@ static inline bool imp_connect_lvb_type(struct obd_import *imp) return false; } +static inline __u64 exp_connect_ibits(struct obd_export *exp) +{ + struct obd_connect_data *ocd; + + ocd = &exp->exp_connect_data; + return ocd->ocd_ibits_known; +} + extern struct obd_export *class_conn2export(struct lustre_handle *conn); extern struct obd_device *class_conn2obd(struct lustre_handle *conn); diff --git a/drivers/staging/lustre/lustre/mdc/mdc_locks.c b/drivers/staging/lustre/lustre/mdc/mdc_locks.c index d9017a579a32..6ef9e28c56fb 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_locks.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_locks.c @@ -160,6 +160,8 @@ ldlm_mode_t mdc_lock_match(struct obd_export *exp, __u64 flags, ldlm_mode_t rc; fid_build_reg_res_name(fid, &res_id); + /* LU-4405: Clear bits not supported by server */ + policy->l_inodebits.bits &= exp_connect_ibits(exp); rc = ldlm_lock_match(class_exp2obd(exp)->obd_namespace, flags, &res_id, type, policy, mode, lockh, 0); return rc; @@ -1087,10 +1089,10 @@ int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it, break; } - mode = ldlm_lock_match(exp->exp_obd->obd_namespace, - LDLM_FL_BLOCK_GRANTED, &res_id, + mode = mdc_lock_match(exp, LDLM_FL_BLOCK_GRANTED, fid, LDLM_IBITS, &policy, - LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh, 0); + LCK_CR | LCK_CW | LCK_PR | LCK_PW, + &lockh); } if (mode) { |