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libceph: fix pg_temp updates

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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>
This commit is contained in:
Sage Weil 2012-05-21 09:45:23 -07:00
parent 35f9f8a09e
commit 6bd9adbdf9
1 changed files with 5 additions and 1 deletions
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6
net/ceph/osdmap.c
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@ -883,8 +883,12 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
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;