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| author | Joe Eykholt <jeykholt@cisco.com> | 2010-07-20 15:19:37 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 09:05:48 -0500 |
| commit | 42e9041467cf5fd33501b91b27e26807c259c896 (patch) | |
| tree | 41a335a931e151f3fa00f384b5d1fb024421b7d2 /include/scsi/libfc.h | |
| parent | 519e5135e2537c9dbc1cbcc0891b0a936ff5dcd2 (diff) | |
| download | linux-42e9041467cf5fd33501b91b27e26807c259c896.tar.gz | |
[SCSI] libfc: convert rport lookup to be RCU safe
To allow LLD to do lookups on rports without grabbing a mutex, make them RCU-safe. The caller of lport->tt.rport_lookup will have the choice of holding disc_mutex or the rcu_read_lock(). Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'include/scsi/libfc.h')
| -rw-r--r-- | include/scsi/libfc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index 6d78df77dab6..b0310b9b3469 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -195,6 +195,7 @@ struct fc_rport_libfc_priv { * @rp_mutex: The mutex that protects the remote port * @retry_work: Handle for retries * @event_callback: Callback when READY, FAILED or LOGO states complete + * @rcu: Structure used for freeing in an RCU-safe manner */ struct fc_rport_priv { struct fc_lport *local_port; @@ -217,6 +218,7 @@ struct fc_rport_priv { struct list_head peers; struct work_struct event_work; u32 supported_classes; + struct rcu_head rcu; }; /** |