• Leon Romanovsky's avatar
    IB/IPoIB: Convert IPoIB to memalloc_noio_* calls · d83187dd
    Leon Romanovsky authored
    Commit 21caf2fc ("mm: teach mm by current context info to not do I/O
    during memory allocation") added the memalloc_noio_(save|restore) functions
    to enable people to modify the MM behavior by disabling I/O during memory
    allocation. This was further extended in Fixes: 934f3072 ("mm: clear
    __GFP_FS when PF_MEMALLOC_NOIO is set"). memalloc_noio_* functions prevent
    allocation paths recursing back into the filesystem without explicitly
    changing the flags for every allocation site.
    
    However the IPoIB hasn't been keeping up with the changes and missed
    completely these memalloc_noio_* calls. This led to update of
    allocation site with special QP creation flag, see commit 09b93088
    ("IB: Add a QP creation flag to use GFP_NOIO allocations"), while this
    flag is supported by small number of drivers in IB stack.
    
    Let's change it by updating to memalloc_noio_* calls and allow
    for every driver underneath enjoy NOIO allocations.
    Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
    Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
    Reviewed-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
    Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
    d83187dd
ipoib_cm.c 43.1 KB