forked from luck/tmp_suning_uos_patched
libceph: initialize data fields on last msg put
When the last reference to a ceph message is dropped, ceph_msg_last_put() is called to clean things up. For "normal" messages (allocated via ceph_msg_new() rather than being allocated from a memory pool) it's sufficient to just release resources. But for a mempool-allocated message we actually have to re-initialize the data fields in the message back to initial state so they're ready to go in the event the message gets reused. Some of this was already done; this fleshes it out so it's done more completely. This resolves: http://tracker.ceph.com/issues/4540 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
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@ -3331,12 +3331,17 @@ void ceph_msg_last_put(struct kref *kref)
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if (ceph_msg_has_pages(m)) {
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m->p.length = 0;
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m->p.pages = NULL;
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m->p.type = CEPH_OSD_DATA_TYPE_NONE;
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}
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if (ceph_msg_has_pagelist(m)) {
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ceph_pagelist_release(m->l.pagelist);
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kfree(m->l.pagelist);
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m->l.pagelist = NULL;
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m->l.type = CEPH_OSD_DATA_TYPE_NONE;
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}
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if (ceph_msg_has_bio(m)) {
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m->b.bio = NULL;
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m->b.type = CEPH_OSD_DATA_TYPE_NONE;
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}
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if (m->pool)
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