diff options
| 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 /drivers/scsi/bnx2fc | |
| parent | 1e24edca0557dba6486d39d3c24c288475432bcf (diff) | |
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 'drivers/scsi/bnx2fc')
| -rw-r--r-- | drivers/scsi/bnx2fc/bnx2fc_io.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index f501095f91ac..898461b146cc 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -74,7 +74,7 @@ static void bnx2fc_cmd_timeout(struct work_struct *work) &io_req->req_flags)) { /* Handle internally generated ABTS timeout */ BNX2FC_IO_DBG(io_req, "ABTS timed out refcnt = %d\n", - io_req->refcount.refcount.counter); + kref_read(&io_req->refcount)); if (!(test_and_set_bit(BNX2FC_FLAG_ABTS_DONE, &io_req->req_flags))) { /* @@ -1141,7 +1141,7 @@ int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd) return SUCCESS; } BNX2FC_IO_DBG(io_req, "eh_abort - refcnt = %d\n", - io_req->refcount.refcount.counter); + kref_read(&io_req->refcount)); /* Hold IO request across abort processing */ kref_get(&io_req->refcount); @@ -1299,7 +1299,7 @@ void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req, { BNX2FC_IO_DBG(io_req, "Entered process_cleanup_compl " "refcnt = %d, cmd_type = %d\n", - io_req->refcount.refcount.counter, io_req->cmd_type); + kref_read(&io_req->refcount), io_req->cmd_type); bnx2fc_scsi_done(io_req, DID_ERROR); kref_put(&io_req->refcount, bnx2fc_cmd_release); if (io_req->wait_for_comp) @@ -1318,7 +1318,7 @@ void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req, BNX2FC_IO_DBG(io_req, "Entered process_abts_compl xid = 0x%x" "refcnt = %d, cmd_type = %d\n", io_req->xid, - io_req->refcount.refcount.counter, io_req->cmd_type); + kref_read(&io_req->refcount), io_req->cmd_type); if (test_and_set_bit(BNX2FC_FLAG_ABTS_DONE, &io_req->req_flags)) { |