From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-mm@kvack.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-fsdevel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Yang Shi <yang.shi@linux.alibaba.com>,
Dave Chinner <dchinner@redhat.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 00/12] Overhaul multi-page lookups for THP
Date: Mon, 26 Oct 2020 04:13:56 +0000 [thread overview]
Message-ID: <20201026041408.25230-1-willy@infradead.org> (raw)
This THP prep patchset changes several page cache iteration APIs to only
return head pages.
- It's only possible to tag head pages in the page cache, so only
return head pages, not all their subpages.
- Factor a lot of common code out of the various batch lookup routines
- Add mapping_seek_hole_data()
- Unify find_get_entries() and pagevec_lookup_entries()
- Make find_get_entries only return head pages, like find_get_entry().
These are only loosely connected, but they seem to make sense together
as a series. Another ~30 MM patches to come after this batch to
enable THPs for filesystems.
Matthew Wilcox (Oracle) (12):
mm: Make pagecache tagged lookups return only head pages
mm/shmem: Use pagevec_lookup in shmem_unlock_mapping
mm/filemap: Add helper for finding pages
mm/filemap: Add mapping_seek_hole_data
mm: Add and use find_lock_entries
mm: Add an 'end' parameter to find_get_entries
mm: Add an 'end' parameter to pagevec_lookup_entries
mm: Remove nr_entries parameter from pagevec_lookup_entries
mm: Pass pvec directly to find_get_entries
mm: Remove pagevec_lookup_entries
mm/truncate,shmem: Handle truncates that split THPs
mm/filemap: Return only head pages from find_get_entries
include/linux/pagemap.h | 5 +-
include/linux/pagevec.h | 4 -
mm/filemap.c | 275 +++++++++++++++++++++++++++-------------
mm/internal.h | 5 +
mm/shmem.c | 213 +++++++------------------------
mm/swap.c | 38 +-----
mm/truncate.c | 249 ++++++++++++++----------------------
7 files changed, 335 insertions(+), 454 deletions(-)
--
2.28.0
next reply other threads:[~2020-10-26 4:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 4:13 Matthew Wilcox (Oracle) [this message]
2020-10-26 4:13 ` [PATCH v3 01/12] mm: Make pagecache tagged lookups return only head pages Matthew Wilcox (Oracle)
2020-10-28 7:50 ` Mike Rapoport
2020-11-12 17:41 ` Matthew Wilcox
2020-11-12 19:11 ` Mike Rapoport
2020-10-26 4:13 ` [PATCH v3 02/12] mm/shmem: Use pagevec_lookup in shmem_unlock_mapping Matthew Wilcox (Oracle)
2020-10-26 4:13 ` [PATCH v3 03/12] mm/filemap: Add helper for finding pages Matthew Wilcox (Oracle)
2020-10-27 18:56 ` Christoph Hellwig
2020-11-12 14:25 ` Matthew Wilcox
2020-10-26 4:14 ` [PATCH v3 04/12] mm/filemap: Add mapping_seek_hole_data Matthew Wilcox (Oracle)
2020-10-26 10:48 ` Jan Kara
2020-10-26 12:17 ` Matthew Wilcox
2020-10-26 14:49 ` Jan Kara
2020-10-27 18:58 ` Christoph Hellwig
2020-10-27 20:04 ` Matthew Wilcox
2020-10-28 6:40 ` Christoph Hellwig
2020-10-26 4:14 ` [PATCH v3 05/12] mm: Add and use find_lock_entries Matthew Wilcox (Oracle)
2020-10-26 4:14 ` [PATCH v3 06/12] mm: Add an 'end' parameter to find_get_entries Matthew Wilcox (Oracle)
2020-10-26 4:14 ` [PATCH v3 07/12] mm: Add an 'end' parameter to pagevec_lookup_entries Matthew Wilcox (Oracle)
2020-10-26 4:14 ` [PATCH v3 08/12] mm: Remove nr_entries parameter from pagevec_lookup_entries Matthew Wilcox (Oracle)
2020-10-26 4:14 ` [PATCH v3 09/12] mm: Pass pvec directly to find_get_entries Matthew Wilcox (Oracle)
2020-10-26 4:14 ` [PATCH v3 10/12] mm: Remove pagevec_lookup_entries Matthew Wilcox (Oracle)
2020-10-26 4:14 ` [PATCH v3 11/12] mm/truncate,shmem: Handle truncates that split THPs Matthew Wilcox (Oracle)
2020-10-26 11:05 ` Jan Kara
2020-10-26 4:14 ` [PATCH v3 12/12] mm/filemap: Return only head pages from find_get_entries Matthew Wilcox (Oracle)
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