linux-kernel - [ 107/117] libceph: use pg_num_mask instead of pgp_num

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Message-Id: <20130925001752.626253898@linuxfoundation.org>
Date:	Tue, 24 Sep 2013 17:19:33 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Sage Weil <sage@...tank.com>,
	Alex Elder <alex.elder@...ary.org>
Subject: [ 107/117] libceph: use pg_num_mask instead of pgp_num_mask for pg.seed calc

3.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sage Weil <sage@...tank.com>

commit 9542cf0bf9b1a3adcc2ef271edbcbdba03abf345 upstream.

Fix a typo that used the wrong bitmask for the pg.seed calculation.  This
is normally unnoticed because in most cases pg_num == pgp_num.  It is, however,
a bug that is easily corrected.

Signed-off-by: Sage Weil <sage@...tank.com>
Reviewed-by: Alex Elder <alex.elder@...ary.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/ceph/osdmap.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1129,7 +1129,7 @@ static int *calc_pg_raw(struct ceph_osdm
 
 	/* pg_temp? */
 	pgid.seed = ceph_stable_mod(pgid.seed, pool->pg_num,
-				    pool->pgp_num_mask);
+				    pool->pg_num_mask);
 	pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid);
 	if (pg) {
 		*num = pg->len;


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