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| author | Bart Van Assche <bvanassche@acm.org> | 2013-10-26 14:32:30 +0200 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-11-08 23:43:15 +0100 |
| commit | 9dd69a600a680fab1c9235a644c886d8d6a2da2a (patch) | |
| tree | 844b8e5cf7e9ff7638eb5b5dd32c40d55c974733 /include/scsi | |
| parent | IB/srp: Make transport layer retry count configurable (diff) | |
| download | linux-9dd69a600a680fab1c9235a644c886d8d6a2da2a.tar.xz linux-9dd69a600a680fab1c9235a644c886d8d6a2da2a.zip | |
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.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/scsi/scsi_transport_srp.h b/include/scsi/scsi_transport_srp.h index ff0f04ac91aa..5a2d2d1081c1 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 *); |