• Yunsheng Lin's avatar
    page_pool: add frag page recycling support in page pool · 53e0961d
    Yunsheng Lin authored
    Currently page pool only support page recycling when there
    is only one user of the page, and the split page reusing
    implemented in the most driver can not use the page pool as
    bing-pong way of reusing requires the multi user support in
    page pool.
    
    Those reusing or recycling has below limitations:
    1. page from page pool can only be used be one user in order
       for the page recycling to happen.
    2. Bing-pong way of reusing in most driver does not support
       multi desc using different part of the same page in order
       to save memory.
    
    So add multi-users support and frag page recycling in page
    pool to overcome the above limitation.
    Signed-off-by: default avatarYunsheng Lin <linyunsheng@huawei.com>
    Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
    53e0961d
page_pool.h 8.88 KB