Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.19 55/64] Revert "scsi: libfc: Add WARN_ON() when deleting rports" | Date | Thu, 28 Feb 2019 10:10:56 -0500 |
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From: Ross Lagerwall <ross.lagerwall@citrix.com>
[ Upstream commit d8f6382a7d026989029e2e50c515df954488459b ]
This reverts commit bbc0f8bd88abefb0f27998f40a073634a3a2db89.
It added a warning whose intent was to check whether the rport was still linked into the peer list. It doesn't work as intended and gives false positive warnings for two reasons:
1) If the rport is never linked into the peer list it will not be considered empty since the list_head is never initialized.
2) If the rport is deleted from the peer list using list_del_rcu(), then the list_head is in an undefined state and it is not considered empty.
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/scsi/libfc/fc_rport.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c index 372387a450dff..1797e47fab386 100644 --- a/drivers/scsi/libfc/fc_rport.c +++ b/drivers/scsi/libfc/fc_rport.c @@ -184,7 +184,6 @@ void fc_rport_destroy(struct kref *kref) struct fc_rport_priv *rdata; rdata = container_of(kref, struct fc_rport_priv, kref); - WARN_ON(!list_empty(&rdata->peers)); kfree_rcu(rdata, rcu); } EXPORT_SYMBOL(fc_rport_destroy); -- 2.19.1
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