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authorPeter Zijlstra <peterz@infradead.org>2016-11-14 17:29:48 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-14 11:37:18 +0100
commit2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e (patch)
tree4ccb975ac9142887b4e7e7bf1c0cca5c53d4cf99 /drivers/scsi/bnx2fc
parent1e24edca0557dba6486d39d3c24c288475432bcf (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.c8
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)) {