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authorMing Lei <ming.lei@redhat.com>2018-06-24 17:03:26 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-06-26 19:53:26 +0300
commitc84b023a4c1461498abf0eda54f60e2fd64a1ca2 (patch)
tree67ebdb69f8d50cd93209e09945474f23e845280f /drivers/scsi/hosts.c
parent2b33ab371e026cfcea4cbdf233c6b8776dde9ba8 (diff)
downloadlinux-c84b023a4c1461498abf0eda54f60e2fd64a1ca2.tar.xz
scsi: read host_busy via scsi_host_busy()
No functional change. Just introduce scsi_host_busy() and replace the direct read of scsi_host->host_busy with this new API. Cc: Omar Sandoval <osandov@fb.com>, Cc: "Martin K. Petersen" <martin.petersen@oracle.com>, Cc: James Bottomley <james.bottomley@hansenpartnership.com>, Cc: Christoph Hellwig <hch@lst.de>, Cc: Don Brace <don.brace@microsemi.com> Cc: Kashyap Desai <kashyap.desai@broadcom.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Laurence Oberman <loberman@redhat.com> Cc: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hosts.c')
-rw-r--r--drivers/scsi/hosts.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 3771e59a9fae..ea4b0bb0c1cd 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -564,6 +564,16 @@ struct Scsi_Host *scsi_host_get(struct Scsi_Host *shost)
EXPORT_SYMBOL(scsi_host_get);
/**
+ * scsi_host_busy - Return the host busy counter
+ * @shost: Pointer to Scsi_Host to inc.
+ **/
+int scsi_host_busy(struct Scsi_Host *shost)
+{
+ return atomic_read(&shost->host_busy);
+}
+EXPORT_SYMBOL(scsi_host_busy);
+
+/**
* scsi_host_put - dec a Scsi_Host ref count
* @shost: Pointer to Scsi_Host to dec.
**/