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 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
