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| author | Peter Zijlstra <peterz@infradead.org> | 2016-11-14 19:29:48 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-01-14 13:37:18 +0300 |
| commit | 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e (patch) | |
| tree | 4ccb975ac9142887b4e7e7bf1c0cca5c53d4cf99 /net/ceph/osd_client.c | |
| parent | 1e24edca0557dba6486d39d3c24c288475432bcf (diff) | |
| download | linux-2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e.tar.xz | |
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 'net/ceph/osd_client.c')
| -rw-r--r-- | net/ceph/osd_client.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 842f049abb86..f3378ba1a828 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -438,7 +438,7 @@ static void ceph_osdc_release_request(struct kref *kref) void ceph_osdc_get_request(struct ceph_osd_request *req) { dout("%s %p (was %d)\n", __func__, req, - atomic_read(&req->r_kref.refcount)); + kref_read(&req->r_kref)); kref_get(&req->r_kref); } EXPORT_SYMBOL(ceph_osdc_get_request); @@ -447,7 +447,7 @@ void ceph_osdc_put_request(struct ceph_osd_request *req) { if (req) { dout("%s %p (was %d)\n", __func__, req, - atomic_read(&req->r_kref.refcount)); + kref_read(&req->r_kref)); kref_put(&req->r_kref, ceph_osdc_release_request); } } @@ -487,11 +487,11 @@ static void request_reinit(struct ceph_osd_request *req) struct ceph_msg *reply_msg = req->r_reply; dout("%s req %p\n", __func__, req); - WARN_ON(atomic_read(&req->r_kref.refcount) != 1); + WARN_ON(kref_read(&req->r_kref) != 1); request_release_checks(req); - WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); - WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); + WARN_ON(kref_read(&request_msg->kref) != 1); + WARN_ON(kref_read(&reply_msg->kref) != 1); target_destroy(&req->r_t); request_init(req); |