Commit 3704e098 authored Feb 04, 2016 by Javier González Committed by Jens Axboe Feb 04, 2016

lightnvm: fix request intersection locking in rrpc



This patch fixes an error on the calculation of intersecting logical
addresses; it contemplates the case where a new request including
several addresses intersects with a single locked address. This case is
typical when multiple pages are sent in a new request, while GC - which
at the moment sends one address at the time - is running.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>

parent bba7f40a

drivers/lightnvm/rrpc.h

+1 −2

Original line number	Diff line number	Diff line
		@@ -174,8 +174,7 @@ static inline sector_t rrpc_get_sector(sector_t laddr)
		static inline int request_intersects(struct rrpc_inflight_rq *r,
		sector_t laddr_start, sector_t laddr_end)
		{
		return (laddr_end >= r->l_start && laddr_end <= r->l_end) &&
		(laddr_start >= r->l_start && laddr_start <= r->l_end);
		return (laddr_end >= r->l_start) && (laddr_start <= r->l_end);
		}

		static int __rrpc_lock_laddr(struct rrpc *rrpc, sector_t laddr,