From: NeilBrown <neilb@suse.com>
To: Oleg Drokin <oleg.drokin@intel.com>,
Greg Kroah-Hartman <greg@kroah.com>,
Andreas Dilger <andreas.dilger@intel.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Lustre Development List <lustre-devel@lists.lustre.org>
Subject: [PATCH 11/12] staging: lustre: ldlm: remove unnecessary 'ownlocks' variable.
Date: Wed, 19 Jul 2017 09:26:47 +1000 [thread overview]
Message-ID: <150042040766.20736.11654102832825755225.stgit@noble> (raw)
In-Reply-To: <150041997277.20736.17112251996623587423.stgit@noble>
Now that the code has been simplified, 'ownlocks' is not
necessary.
The loop which sets it exits with 'lock' having the same value as
'ownlocks', or point to the head of the list if ownlocks is NULL.
The current code then tests ownlocks and sets 'lock' to exact the
value that it currently has.
So discard 'ownlocks'.
Also remove unnecessary initialization of 'lock'.
Signed-off-by: NeilBrown <neilb@suse.com>
---
drivers/staging/lustre/lustre/ldlm/ldlm_flock.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
index 58227728a002..4e8808103437 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
@@ -115,8 +115,7 @@ static int ldlm_process_flock_lock(struct ldlm_lock *req)
struct ldlm_resource *res = req->l_resource;
struct ldlm_namespace *ns = ldlm_res_to_ns(res);
struct ldlm_lock *tmp;
- struct ldlm_lock *ownlocks = NULL;
- struct ldlm_lock *lock = NULL;
+ struct ldlm_lock *lock;
struct ldlm_lock *new = req;
struct ldlm_lock *new2 = NULL;
enum ldlm_mode mode = req->l_req_mode;
@@ -140,22 +139,14 @@ static int ldlm_process_flock_lock(struct ldlm_lock *req)
/* This loop determines where this processes locks start
* in the resource lr_granted list.
*/
- list_for_each_entry(lock, &res->lr_granted, l_res_link) {
- if (ldlm_same_flock_owner(lock, req)) {
- ownlocks = lock;
+ list_for_each_entry(lock, &res->lr_granted, l_res_link)
+ if (ldlm_same_flock_owner(lock, req))
break;
- }
- }
/* Scan the locks owned by this process to find the insertion point
* (as locks are ordered), and to handle overlaps.
* We may have to merge or split existing locks.
*/
- if (ownlocks)
- lock = ownlocks;
- else
- lock = list_entry(&res->lr_granted,
- struct ldlm_lock, l_res_link);
list_for_each_entry_safe_from(lock, tmp, &res->lr_granted, l_res_link) {
if (!ldlm_same_flock_owner(lock, new))
next prev parent reply other threads:[~2017-07-18 23:28 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-18 23:26 [PATCH 00/12] Assorted lustre fixes and improvements NeilBrown
2017-07-18 23:26 ` [PATCH 03/12] staging: lustre: llite: fix various issues with ll_splice_alias NeilBrown
2017-07-19 2:51 ` Oleg Drokin
2017-07-19 4:33 ` NeilBrown
2017-07-19 6:18 ` Oleg Drokin
2017-07-18 23:26 ` [PATCH 04/12] staging: lustre: ldlm: remove 'first_enq' arg from ldlm_process_flock_lock() NeilBrown
2017-07-18 23:26 ` [PATCH 06/12] staging: lustre: ldlm: remove unneeded 'err' arg to ldlm_process_flock_lock() NeilBrown
2017-07-18 23:26 ` NeilBrown [this message]
2017-07-18 23:26 ` [PATCH 12/12] staging: lustre: ldlm: remove unused field 'fwd_generation' NeilBrown
2017-07-18 23:26 ` [PATCH 01/12] staging: lustre: fix minor typos in comments NeilBrown
2017-07-19 8:29 ` Greg KH
2017-08-02 3:26 ` [PATCH] " NeilBrown
2017-08-03 17:29 ` [lustre-devel] " James Simmons
2017-07-18 23:26 ` [PATCH 07/12] staging: lustre: ldlm: remove 'flags' arg from ldlm_process_flock_lock() NeilBrown
2017-07-18 23:26 ` [PATCH 02/12] staging: lustre: llite: fix incorrect DCACHE_DISCONNECTED test NeilBrown
2017-07-18 23:26 ` [PATCH 05/12] staging: lustre: ldlm: remove unused 'work_list' arg from ldlm_process_flock_lock() NeilBrown
2017-07-18 23:26 ` [PATCH 10/12] staging: lustre: ldlm: tidy list walking in ldlm_flock() NeilBrown
[not found] ` <BN6PR1101MB2132359E48C9904D3E305EE7CBA60@BN6PR1101MB2132.namprd11.prod.outlook.com>
2017-07-19 4:36 ` [lustre-devel] " NeilBrown
2017-07-18 23:26 ` [PATCH 09/12] staging: lustre: ldlm: remove 'flags' arg from ldlm_flock_destroy() NeilBrown
2017-07-18 23:26 ` [PATCH 08/12] staging: lustre: ldlm: remove unused 'overlaps' variable NeilBrown
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