Vasu Dev a0cc1ecc09 [SCSI] libfc: fix a circular locking warning during sending RRQ ... Currently the fc_exch_rrq is called with fc_exch's ex_lock held. The fc_exch_rrq allocates new exch and that requires taking ex_lock again after EM lock. This locking order causes warning, see more details on this warning at :- http://www.open-fcoe.org/pipermail/devel/2009-July/003251.html This patch fixes this by dropping the ex_lock before calling fc_exch_rrq(). The fc_exch_rrq needs to grab ex_lock lock again to schedule RRQ retry and in the meanwhile fc_exch_reset could occur before ex_lock is grabbed inside fc_exch_rrq. So to handle this case, this patch adds additional check to detect fc_exch_reset after ex_lock acquired and in case the fc_exch_reset occurred then abandons the RRQ retry and releases the exch. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>		2009-07-30 08:50:02 -05:00
..
fc_disc.c	libfc: Add runtime debugging with debug_logging module parameter	2009-06-21 11:07:08 -05:00
fc_elsct.c	[SCSI] libfc: Fix compilation warnings with allmodconfig	2009-04-27 10:19:31 -05:00
fc_exch.c	[SCSI] libfc: fix a circular locking warning during sending RRQ	2009-07-30 08:50:02 -05:00
fc_fcp.c	libfc: Add runtime debugging with debug_logging module parameter	2009-06-21 11:07:08 -05:00
fc_frame.c
fc_lport.c	libfc: Add runtime debugging with debug_logging module parameter	2009-06-21 11:07:08 -05:00
fc_rport.c	libfc: Add runtime debugging with debug_logging module parameter	2009-06-21 11:07:08 -05:00
Makefile