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Message-ID: <20230627174349.491803-1-sidhartha.kumar@oracle.com>
Date: Tue, 27 Jun 2023 10:43:49 -0700
From: Sidhartha Kumar <sidhartha.kumar@...cle.com>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org
Cc: akpm@...ux-foundation.org, tytso@....edu, willy@...radead.org,
adilger.kernel@...ger.ca, hughd@...gle.com, hch@...radead.org,
Sidhartha Kumar <sidhartha.kumar@...cle.com>
Subject: [PATCH] mm: increase usage of folio_next_index() helper
Simplify code pattern of 'folio->index + folio_nr_pages(folio)' by using
the existing helper folio_next_index().
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
Suggested-by: Christoph Hellwig <hch@...radead.org>
---
fs/ext4/inode.c | 4 ++--
mm/filemap.c | 8 ++++----
mm/memory.c | 2 +-
mm/shmem.c | 2 +-
mm/truncate.c | 2 +-
5 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 31b839a0ce8b8..ded4cbb017a51 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1583,7 +1583,7 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
if (folio->index < mpd->first_page)
continue;
- if (folio->index + folio_nr_pages(folio) - 1 > end)
+ if (folio_next_index(folio) - 1 > end)
continue;
BUG_ON(!folio_test_locked(folio));
BUG_ON(folio_test_writeback(folio));
@@ -2481,7 +2481,7 @@ static int mpage_prepare_extent_to_map(struct mpage_da_data *mpd)
if (mpd->map.m_len == 0)
mpd->first_page = folio->index;
- mpd->next_page = folio->index + folio_nr_pages(folio);
+ mpd->next_page = folio_next_index(folio);
/*
* Writeout when we cannot modify metadata is simple.
* Just submit the page. For data=journal mode we
diff --git a/mm/filemap.c b/mm/filemap.c
index 758bbdf300e73..fdac934ce81a6 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2075,7 +2075,7 @@ unsigned find_lock_entries(struct address_space *mapping, pgoff_t *start,
if (!xa_is_value(folio)) {
if (folio->index < *start)
goto put;
- if (folio->index + folio_nr_pages(folio) - 1 > end)
+ if (folio_next_index(folio) - 1 > end)
goto put;
if (!folio_trylock(folio))
goto put;
@@ -2174,7 +2174,7 @@ bool folio_more_pages(struct folio *folio, pgoff_t index, pgoff_t max)
return false;
if (index >= max)
return false;
- return index < folio->index + folio_nr_pages(folio) - 1;
+ return index < folio_next_index(folio) - 1;
}
/**
@@ -2242,7 +2242,7 @@ unsigned filemap_get_folios_contig(struct address_space *mapping,
if (folio_test_hugetlb(folio))
*start = folio->index + 1;
else
- *start = folio->index + folio_nr_pages(folio);
+ *start = folio_next_index(folio);
}
out:
rcu_read_unlock();
@@ -2359,7 +2359,7 @@ static void filemap_get_read_batch(struct address_space *mapping,
break;
if (folio_test_readahead(folio))
break;
- xas_advance(&xas, folio->index + folio_nr_pages(folio) - 1);
+ xas_advance(&xas, folio_next_index(folio) - 1);
continue;
put_folio:
folio_put(folio);
diff --git a/mm/memory.c b/mm/memory.c
index 21fab27272092..0cabfe9d501d9 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3497,7 +3497,7 @@ void unmap_mapping_folio(struct folio *folio)
VM_BUG_ON(!folio_test_locked(folio));
first_index = folio->index;
- last_index = folio->index + folio_nr_pages(folio) - 1;
+ last_index = folio_next_index(folio) - 1;
details.even_cows = false;
details.single_folio = folio;
diff --git a/mm/shmem.c b/mm/shmem.c
index 85a0f8751a147..d4ca8bc7ab94f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -970,7 +970,7 @@ static void shmem_undo_range(struct inode *inode, loff_t lstart, loff_t lend,
same_folio = lend < folio_pos(folio) + folio_size(folio);
folio_mark_dirty(folio);
if (!truncate_inode_partial_folio(folio, lstart, lend)) {
- start = folio->index + folio_nr_pages(folio);
+ start = folio_next_index(folio);
if (same_folio)
end = folio->index;
}
diff --git a/mm/truncate.c b/mm/truncate.c
index 95d1291d269b5..2f28cc0e12ef1 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -378,7 +378,7 @@ void truncate_inode_pages_range(struct address_space *mapping,
if (!IS_ERR(folio)) {
same_folio = lend < folio_pos(folio) + folio_size(folio);
if (!truncate_inode_partial_folio(folio, lstart, lend)) {
- start = folio->index + folio_nr_pages(folio);
+ start = folio_next_index(folio);
if (same_folio)
end = folio->index;
}
--
2.41.0
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