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Line 638... Line 638...
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 * or ENOMEM if there was a problem in allocating destination address space
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 * or ENOMEM if there was a problem in allocating destination address space
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 * area. ENOTSUP is returned if the address space area backend does not support
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 * area. ENOTSUP is returned if the address space area backend does not support
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 * sharing.
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 * sharing.
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 */
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 */
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int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size,
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int as_area_share(as_t *src_as, uintptr_t src_base, size_t acc_size,
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          as_t *dst_as, uintptr_t dst_base, int dst_flags_mask)
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    as_t *dst_as, uintptr_t dst_base, int dst_flags_mask)
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{
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{
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    ipl_t ipl;
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    ipl_t ipl;
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    int src_flags;
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    int src_flags;
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    size_t src_size;
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    size_t src_size;
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    as_area_t *src_area, *dst_area;
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    as_area_t *src_area, *dst_area;
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        sh_info = (share_info_t *) malloc(sizeof(share_info_t), 0);
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        sh_info = (share_info_t *) malloc(sizeof(share_info_t), 0);
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        mutex_initialize(&sh_info->lock);
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        mutex_initialize(&sh_info->lock);
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        sh_info->refcount = 2;
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        sh_info->refcount = 2;
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        btree_create(&sh_info->pagemap);
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        btree_create(&sh_info->pagemap);
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        src_area->sh_info = sh_info;
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        src_area->sh_info = sh_info;
-
 
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        /*
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         * Call the backend to setup sharing.
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         */
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        src_area->backend->share(src_area);
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    } else {
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    } else {
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        mutex_lock(&sh_info->lock);
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        mutex_lock(&sh_info->lock);
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        sh_info->refcount++;
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        sh_info->refcount++;
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        mutex_unlock(&sh_info->lock);
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        mutex_unlock(&sh_info->lock);
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    }
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    }
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    src_area->backend->share(src_area);
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    mutex_unlock(&src_area->lock);
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    mutex_unlock(&src_area->lock);
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    mutex_unlock(&src_as->lock);
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    mutex_unlock(&src_as->lock);
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    /*
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    /*
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     * Create copy of the source address space area.
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     * Create copy of the source address space area.