Message-Id: <20210622121551.3398730-1-willy@infradead.org>
Date:   Tue, 22 Jun 2021 13:15:05 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     akpm@...ux-foundation.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 00/46] Folio-enabling the page cache

These are all the patches I've collected to date which enable filesystems
to be converted to use folios.  After applying these patches (on top of
folio v12), I have an iomap (ie xfs/zonefs) conversion.  I would expect
filesystems to convert one-by-one, rather than converting all callers of
(say) set_page_writeback() to call folio_start_writeback().

The biggest chunk of this is teaching the writeback code that folios may
be larger than a single page, so there's no (or little) code reduction
from these patches.  Instead it takes us to where we can start preparing
filesystems to see multi-page folios.

Matthew Wilcox (Oracle) (46):
  mm: Add folio_to_pfn()
  mm: Add folio_rmapping()
  mm: Add kmap_local_folio()
  mm: Add flush_dcache_folio()
  mm: Add arch_make_folio_accessible()
  mm: Add folio_young() and folio_idle()
  mm/workingset: Convert workingset_activation to take a folio
  mm/swap: Add folio_activate()
  mm/swap: Add folio_mark_accessed()
  mm/rmap: Add folio_mkclean()
  mm/memcg: Remove 'page' parameter to mem_cgroup_charge_statistics()
  mm/memcg: Use the node id in mem_cgroup_update_tree()
  mm/memcg: Convert commit_charge() to take a folio
  mm/memcg: Add folio_charge_cgroup()
  mm/memcg: Add folio_uncharge_cgroup()
  mm/memcg: Add folio_migrate_cgroup()
  mm/memcg: Convert mem_cgroup_track_foreign_dirty_slowpath() to folio
  mm/migrate: Add folio_migrate_mapping()
  mm/migrate: Add folio_migrate_flags()
  mm/migrate: Add folio_migrate_copy()
  mm/writeback: Rename __add_wb_stat() to wb_stat_mod()
  flex_proportions: Allow N events instead of 1
  mm/writeback: Change __wb_writeout_inc() to __wb_writeout_add()
  mm/writeback: Add __folio_end_writeback()
  mm/writeback: Add folio_start_writeback()
  mm/writeback: Add folio_mark_dirty()
  mm/writeback: Add __folio_mark_dirty()
  mm/writeback: Add filemap_dirty_folio()
  mm/writeback: Add folio_account_cleaned()
  mm/writeback: Add folio_cancel_dirty()
  mm/writeback: Add folio_clear_dirty_for_io()
  mm/writeback: Add folio_account_redirty()
  mm/writeback: Add folio_redirty_for_writepage()
  mm/filemap: Add i_blocks_per_folio()
  mm/filemap: Add folio_mkwrite_check_truncate()
  mm/filemap: Add readahead_folio()
  mm/workingset: Convert workingset_refault() to take a folio
  mm: Add folio_evictable()
  mm/lru: Convert __pagevec_lru_add_fn to take a folio
  mm/lru: Add folio_add_lru()
  mm/page_alloc: Add folio allocation functions
  mm/filemap: Add filemap_alloc_folio
  mm/filemap: Add filemap_add_folio
  mm/filemap: Convert mapping_get_entry to return a folio
  mm/filemap: Add filemap_get_folio
  mm/filemap: Add FGP_STABLE

 .../admin-guide/cgroup-v1/memcg_test.rst      |   2 +-
 Documentation/core-api/cachetlb.rst           |   6 +
 arch/nds32/include/asm/cacheflush.h           |   1 +
 fs/jfs/jfs_metapage.c                         |   1 +
 include/asm-generic/cacheflush.h              |   6 +
 include/linux/backing-dev.h                   |   6 +-
 include/linux/flex_proportions.h              |   9 +-
 include/linux/gfp.h                           |  22 +-
 include/linux/highmem-internal.h              |  11 +
 include/linux/highmem.h                       |  38 ++
 include/linux/ksm.h                           |   4 +-
 include/linux/memcontrol.h                    |  28 +-
 include/linux/migrate.h                       |   4 +
 include/linux/mm.h                            |  51 +--
 include/linux/page-flags.h                    |  20 +-
 include/linux/page_idle.h                     |  99 +++--
 include/linux/page_owner.h                    |   8 +-
 include/linux/pagemap.h                       | 195 ++++++---
 include/linux/rmap.h                          |  10 +-
 include/linux/swap.h                          |  10 +-
 include/linux/writeback.h                     |   9 +-
 include/trace/events/writeback.h              |   8 +-
 kernel/bpf/verifier.c                         |   2 +-
 lib/flex_proportions.c                        |  28 +-
 mm/filemap.c                                  | 240 +++++------
 mm/folio-compat.c                             |  98 +++++
 mm/internal.h                                 |  35 +-
 mm/ksm.c                                      |  31 +-
 mm/memcontrol.c                               | 124 +++---
 mm/memory.c                                   |   3 +-
 mm/mempolicy.c                                |  10 +
 mm/migrate.c                                  | 242 +++++------
 mm/page-writeback.c                           | 383 ++++++++++--------
 mm/page_alloc.c                               |  12 +
 mm/page_owner.c                               |  10 +-
 mm/rmap.c                                     |  12 +-
 mm/shmem.c                                    |   5 +-
 mm/swap.c                                     | 137 ++++---
 mm/swap_state.c                               |   2 +-
 mm/util.c                                     |  33 +-
 mm/workingset.c                               |  44 +-
 41 files changed, 1158 insertions(+), 841 deletions(-)

-- 
2.30.2

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