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Commit e791ce27 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Martin K. Petersen
Browse files

scsi: sg: reset 'res_in_use' after unlinking reserved array 



Once the reserved page array is unused we can reset the 'res_in_use'
state; here we can do a lazy update without holding the mutex as we only
need to check against concurrent access, not concurrent release.

[mkp: checkpatch]

Fixes: 1bc0eb04 ("scsi: sg: protect accesses to 'reserved' page array")
Signed-off-by: default avatarHannes Reinecke <hare@suse.com>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 4bd13a07

drivers/scsi/sg.c

+2 −0
Original line number Diff line number Diff line
@@ -2056,6 +2056,8 @@ sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp) 
	req_schp->page_order = 0;

	req_schp->sglist_len = 0;

	srp->res_used = 0;

	/* Called without mutex lock to avoid deadlock */

	sfp->res_in_use = 0;

}



static Sg_request *