| From | Greg Kroah-Hartman <> | Subject | [ 082/171] libceph: fix pg_temp updates | Date | Wed, 21 Nov 2012 16:40:28 -0800 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Sage Weil <sage@inktank.com>
(cherry picked from commit 6bd9adbdf9ca6a052b0b7455ac67b925eb38cfad)
Usually, we are adding pg_temp entries or removing them. Occasionally they update. In that case, osdmap_apply_incremental() was failing because the rbtree entry already exists.
Fix by removing the existing entry before inserting a new one.
Fixes http://tracker.newdream.net/issues/2446
Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ceph/osdmap.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -890,8 +890,12 @@ struct ceph_osdmap *osdmap_apply_increme pglen = ceph_decode_32(p); if (pglen) { - /* insert */ ceph_decode_need(p, end, pglen*sizeof(u32), bad); + + /* removing existing (if any) */ + (void) __remove_pg_mapping(&map->pg_temp, pgid); + + /* insert */ pg = kmalloc(sizeof(*pg) + sizeof(u32)*pglen, GFP_NOFS); if (!pg) { err = -ENOMEM;
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