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    Subject[PATCH 0/6] Overhaul memalloc_no*
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    I want a memalloc_nowait like we have memalloc_noio and memalloc_nofs
    for an upcoming patch series, and Jens also wants it for non-blocking
    io_uring. It turns out we already have dm-bufio which could benefit
    from memalloc_nowait, so it may as well go into the tree now.

    The biggest problem is that we're basically out of PF_ flags, so we need
    to find somewhere else to store the PF_MEMALLOC_NOWAIT flag. It turns
    out the PF_ flags are really supposed to be used for flags which are
    accessed from other tasks, and the MEMALLOC flags are only going to
    be used by this task. So shuffling everything around frees up some PF
    flags and generally makes the world a better place.

    Patch series also available from
    http://git.infradead.org/users/willy/linux.git/shortlog/refs/heads/memalloc

    Matthew Wilcox (Oracle) (6):
    mm: Replace PF_MEMALLOC_NOIO with memalloc_noio
    mm: Add become_kswapd and restore_kswapd
    xfs: Convert to memalloc_nofs_save
    mm: Replace PF_MEMALLOC_NOFS with memalloc_nofs
    mm: Replace PF_MEMALLOC_NOIO with memalloc_nocma
    mm: Add memalloc_nowait

    drivers/block/loop.c | 3 +-
    drivers/md/dm-bufio.c | 30 ++++--------
    drivers/md/dm-zoned-metadata.c | 5 +-
    fs/iomap/buffered-io.c | 2 +-
    fs/xfs/kmem.c | 2 +-
    fs/xfs/libxfs/xfs_btree.c | 14 +++---
    fs/xfs/xfs_aops.c | 4 +-
    fs/xfs/xfs_buf.c | 2 +-
    fs/xfs/xfs_linux.h | 6 ---
    fs/xfs/xfs_trans.c | 14 +++---
    fs/xfs/xfs_trans.h | 2 +-
    include/linux/sched.h | 7 +--
    include/linux/sched/mm.h | 84 ++++++++++++++++++++++++++--------
    kernel/sys.c | 8 ++--
    mm/vmscan.c | 16 +------
    15 files changed, 105 insertions(+), 94 deletions(-)

    --
    2.27.0

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