Commit a053958f authored by Ingo Molnar's avatar Ingo Molnar

Merge branch 'tracing/blktrace-fixes' into tracing/urgent

Merge reason: this used to be a tracing/blktrace-v2 devel topic still
              cooking during the merge window - has propagated to fixes
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parents 4fafd5b0 e2494e1b
......@@ -132,6 +132,7 @@ void blk_rq_init(struct request_queue *q, struct request *rq)
INIT_HLIST_NODE(&rq->hash);
RB_CLEAR_NODE(&rq->rb_node);
rq->cmd = rq->__cmd;
rq->cmd_len = BLK_MAX_CDB;
rq->tag = -1;
rq->ref_count = 1;
}
......
......@@ -327,10 +327,10 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
char *msg;
struct blk_trace *bt;
if (count > BLK_TN_MAX_MSG)
if (count >= BLK_TN_MAX_MSG)
return -EINVAL;
msg = kmalloc(count, GFP_KERNEL);
msg = kmalloc(count + 1, GFP_KERNEL);
if (msg == NULL)
return -ENOMEM;
......@@ -339,6 +339,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
return -EFAULT;
}
msg[count] = '\0';
bt = filp->private_data;
__trace_note_message(bt, "%s", msg);
kfree(msg);
......@@ -642,7 +643,7 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
if (blk_pc_request(rq)) {
what |= BLK_TC_ACT(BLK_TC_PC);
__blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors,
sizeof(rq->cmd), rq->cmd);
rq->cmd_len, rq->cmd);
} else {
what |= BLK_TC_ACT(BLK_TC_FS);
__blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9,
......
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