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| author | Peter Zijlstra <peterz@infradead.org> | 2016-11-14 17:29:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-01-14 11:37:18 +0100 |
| commit | 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e (patch) | |
| tree | 4ccb975ac9142887b4e7e7bf1c0cca5c53d4cf99 /fs/ocfs2/dlm/dlmdebug.c | |
| parent | 1e24edca0557dba6486d39d3c24c288475432bcf (diff) | |
| download | linux-2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e.tar.bz2 | |
locking/atomic, kref: Add kref_read()
Since we need to change the implementation, stop exposing internals.
Provide kref_read() to read the current reference count; typically
used for debug messages.
Kills two anti-patterns:
atomic_read(&kref->refcount)
kref->refcount.counter
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/ocfs2/dlm/dlmdebug.c')
| -rw-r--r-- | fs/ocfs2/dlm/dlmdebug.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index e7b760deefae..9b984cae4c4e 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -81,7 +81,7 @@ static void __dlm_print_lock(struct dlm_lock *lock) lock->ml.type, lock->ml.convert_type, lock->ml.node, dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)), dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)), - atomic_read(&lock->lock_refs.refcount), + kref_read(&lock->lock_refs), (list_empty(&lock->ast_list) ? 'y' : 'n'), (lock->ast_pending ? 'y' : 'n'), (list_empty(&lock->bast_list) ? 'y' : 'n'), @@ -106,7 +106,7 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res) printk("lockres: %s, owner=%u, state=%u\n", buf, res->owner, res->state); printk(" last used: %lu, refcnt: %u, on purge list: %s\n", - res->last_used, atomic_read(&res->refs.refcount), + res->last_used, kref_read(&res->refs), list_empty(&res->purge) ? "no" : "yes"); printk(" on dirty list: %s, on reco list: %s, " "migrating pending: %s\n", @@ -298,7 +298,7 @@ static int dump_mle(struct dlm_master_list_entry *mle, char *buf, int len) mle_type, mle->master, mle->new_master, !list_empty(&mle->hb_events), !!mle->inuse, - atomic_read(&mle->mle_refs.refcount)); + kref_read(&mle->mle_refs)); out += snprintf(buf + out, len - out, "Maybe="); out += stringify_nodemap(mle->maybe_map, O2NM_MAX_NODES, @@ -494,7 +494,7 @@ static int dump_lock(struct dlm_lock *lock, int list_type, char *buf, int len) lock->ast_pending, lock->bast_pending, lock->convert_pending, lock->lock_pending, lock->cancel_pending, lock->unlock_pending, - atomic_read(&lock->lock_refs.refcount)); + kref_read(&lock->lock_refs)); spin_unlock(&lock->spinlock); return out; @@ -521,7 +521,7 @@ static int dump_lockres(struct dlm_lock_resource *res, char *buf, int len) !list_empty(&res->recovering), res->inflight_locks, res->migration_pending, atomic_read(&res->asts_reserved), - atomic_read(&res->refs.refcount)); + kref_read(&res->refs)); /* refmap */ out += snprintf(buf + out, len - out, "RMAP:"); @@ -777,7 +777,7 @@ static int debug_state_print(struct dlm_ctxt *dlm, char *buf, int len) /* Purge Count: xxx Refs: xxx */ out += snprintf(buf + out, len - out, "Purge Count: %d Refs: %d\n", dlm->purge_count, - atomic_read(&dlm->dlm_refs.refcount)); + kref_read(&dlm->dlm_refs)); /* Dead Node: xxx */ out += snprintf(buf + out, len - out, |