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authorBart Van Assche <bvanassche@acm.org>2013-10-26 14:32:30 +0200
committerRoland Dreier <roland@purestorage.com>2013-11-08 14:43:15 -0800
commit9dd69a600a680fab1c9235a644c886d8d6a2da2a (patch)
tree844b8e5cf7e9ff7638eb5b5dd32c40d55c974733 /include/scsi
parent7bb312e4a2f323fa460bbf9f33eeb00b5dabdb6b (diff)
downloadop-kernel-dev-9dd69a600a680fab1c9235a644c886d8d6a2da2a.zip
op-kernel-dev-9dd69a600a680fab1c9235a644c886d8d6a2da2a.tar.gz
IB/srp: Keep rport as long as the IB transport layer
Keep the rport data structure around after srp_remove_host() has finished until cleanup of the IB transport layer has finished completely. This is necessary because later patches use the rport pointer inside the queuecommand callback. Without this patch accessing the rport from inside a queuecommand callback is racy because srp_remove_host() must be invoked before scsi_remove_host() and because the queuecommand callback could get invoked after srp_remove_host() has finished. In other words, without this patch the queuecommand callback can get invoked after the rport data structure has been freed. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Acked-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi_transport_srp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/scsi/scsi_transport_srp.h b/include/scsi/scsi_transport_srp.h
index ff0f04a..5a2d2d1 100644
--- a/include/scsi/scsi_transport_srp.h
+++ b/include/scsi/scsi_transport_srp.h
@@ -38,6 +38,8 @@ extern struct scsi_transport_template *
srp_attach_transport(struct srp_function_template *);
extern void srp_release_transport(struct scsi_transport_template *);
+extern void srp_rport_get(struct srp_rport *rport);
+extern void srp_rport_put(struct srp_rport *rport);
extern struct srp_rport *srp_rport_add(struct Scsi_Host *,
struct srp_rport_identifiers *);
extern void srp_rport_del(struct srp_rport *);
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