linux-kernel - [PATCH 0/7] Overhaul find_get_entries and pagevec_lookup

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Message-Id: <20200819150555.31669-1-willy@infradead.org>
Date:   Wed, 19 Aug 2020 16:05:48 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-mm@...ck.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hugh Dickins <hughd@...gle.com>,
        William Kucharski <william.kucharski@...cle.com>,
        Johannes Weiner <hannes@...xchg.org>, Jan Kara <jack@...e.cz>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/7] Overhaul find_get_entries and pagevec_lookup_entries

This started out as part of the THP patchset, but it's turned into a
nice simplification in its own right.  Essentially we end up unifying
find_get_entries() and pagevec_lookup_entries() into one function that's
better than either, and we get rid of a lot of code in the callers as
a result.

I'm running this through xfstests right now, but something similar to
this has already passed xfstests as part of the THP patchset.

I've done my best to avoid off-by-one errors for 'end', but I wouldn't be
surprised if I made a mistake.  We're not consistent with whether 'end'
is inclusive or exclusive and I didn't want to make extensive changes
to ensure they were consistent.

Matthew Wilcox (Oracle) (7):
  mm: Use pagevec_lookup in shmem_unlock_mapping
  mm: Rewrite shmem_seek_hole_data
  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

 include/linux/pagemap.h |  3 +-
 include/linux/pagevec.h |  4 --
 mm/filemap.c            | 19 +++++----
 mm/shmem.c              | 85 ++++++++++++++---------------------------
 mm/swap.c               | 38 +-----------------
 mm/truncate.c           | 33 +++-------------
 6 files changed, 45 insertions(+), 137 deletions(-)

-- 
2.28.0