From: "Matthew Wilcox (Oracle)" <willy@infradead.org> To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>, linux-xfs@vger.kernel.org, dm-devel@redhat.com, Mikulas Patocka <mpatocka@redhat.com>, Jens Axboe <axboe@kernel.dk>, NeilBrown <neilb@suse.de> Subject: [PATCH 0/6] Overhaul memalloc_no* Date: Thu, 25 Jun 2020 12:31:16 +0100 [thread overview] Message-ID: <20200625113122.7540-1-willy@infradead.org> (raw) 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
next reply other threads:[~2020-06-25 11:31 UTC|newest] Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-25 11:31 Matthew Wilcox (Oracle) [this message] 2020-06-25 11:31 ` [PATCH 1/6] mm: Replace PF_MEMALLOC_NOIO with memalloc_noio Matthew Wilcox (Oracle) 2020-06-25 12:22 ` Michal Hocko 2020-06-25 12:34 ` Matthew Wilcox 2020-06-25 12:42 ` Michal Hocko 2020-06-25 11:31 ` [PATCH 2/6] mm: Add become_kswapd and restore_kswapd Matthew Wilcox (Oracle) 2020-06-25 12:31 ` Michal Hocko 2020-06-25 11:31 ` [PATCH 3/6] xfs: Convert to memalloc_nofs_save Matthew Wilcox (Oracle) 2020-06-25 11:31 ` [PATCH 4/6] mm: Replace PF_MEMALLOC_NOFS with memalloc_nofs Matthew Wilcox (Oracle) 2020-06-25 13:35 ` Michal Hocko 2020-06-25 11:31 ` [PATCH 5/6] mm: Replace PF_MEMALLOC_NOIO with memalloc_nocma Matthew Wilcox (Oracle) 2020-06-25 11:31 ` [PATCH 6/6] mm: Add memalloc_nowait Matthew Wilcox (Oracle) 2020-06-25 12:40 ` Michal Hocko 2020-06-25 13:10 ` Matthew Wilcox 2020-06-25 13:34 ` Michal Hocko 2020-06-25 19:05 ` kernel test robot 2020-06-25 23:51 ` kernel test robot 2020-06-29 5:08 ` Mike Rapoport 2020-06-29 12:18 ` Matthew Wilcox 2020-06-29 12:52 ` Michal Hocko 2020-06-29 13:45 ` Mike Rapoport 2020-06-29 21:28 ` Matthew Wilcox 2020-06-30 6:34 ` Michal Hocko 2020-07-01 4:12 ` Matthew Wilcox 2020-07-01 5:53 ` Michal Hocko 2020-07-01 7:04 ` Mike Rapoport 2020-09-24 0:39 ` Mike Snitzer 2020-09-24 1:10 ` Matthew Wilcox 2020-10-23 14:49 ` Daniel Vetter 2020-06-25 18:48 ` [PATCH 0/6] Overhaul memalloc_no* Darrick J. Wong 2020-06-25 20:34 ` Matthew Wilcox 2020-06-25 20:36 ` Michal Hocko 2020-06-25 20:40 ` Matthew Wilcox 2020-06-26 15:02 ` Mikulas Patocka 2020-06-26 23:08 ` Dave Chinner 2020-06-27 13:09 ` Mikulas Patocka 2020-06-29 0:35 ` Dave Chinner 2020-06-29 13:43 ` Mikulas Patocka 2020-06-29 22:34 ` Dave Chinner 2020-07-03 14:26 ` [PATCH] dm-bufio: do cleanup from a workqueue Mikulas Patocka 2020-06-29 8:22 ` [PATCH 0/6] Overhaul memalloc_no* Michal Hocko
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