xiaomi-sm8450/android_kernel_xiaomi_sm8450
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page cache: use xa_lock

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Remove the address_space ->tree_lock and use the xa_lock newly added to
the radix_tree_root.  Rename the address_space ->page_tree to ->i_pages,
since we don't really care that it's a tree.

[willy@infradead.org: fix nds32, fs/dax.c]
  Link: http://lkml.kernel.org/r/20180406145415.GB20605@bombadil.infradead.orgLink: http://lkml.kernel.org/r/20180313132639.17387-9-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Wilcox
2018-04-10 16:36:56 -07:00
committed by Linus Torvalds
parent f6bb2a2c0b
commit b93b016313
39 changed files with 345 additions and 366 deletions
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22
fs/nilfs2/page.c
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@@ -331,15 +331,15 @@ repeat:
struct page *page2;
/* move the page to the destination cache */
spin_lock_irq(&smap->tree_lock);
page2 = radix_tree_delete(&smap->page_tree, offset);
xa_lock_irq(&smap->i_pages);
page2 = radix_tree_delete(&smap->i_pages, offset);
WARN_ON(page2 != page);
smap->nrpages--;
spin_unlock_irq(&smap->tree_lock);
xa_unlock_irq(&smap->i_pages);
spin_lock_irq(&dmap->tree_lock);
err = radix_tree_insert(&dmap->page_tree, offset, page);
xa_lock_irq(&dmap->i_pages);
err = radix_tree_insert(&dmap->i_pages, offset, page);
if (unlikely(err < 0)) {
WARN_ON(err == -EEXIST);
page->mapping = NULL;
@@ -348,11 +348,11 @@ repeat:
page->mapping = dmap;
dmap->nrpages++;
if (PageDirty(page))
radix_tree_tag_set(&dmap->page_tree,
radix_tree_tag_set(&dmap->i_pages,
offset,
PAGECACHE_TAG_DIRTY);
}
spin_unlock_irq(&dmap->tree_lock);
xa_unlock_irq(&dmap->i_pages);
}
unlock_page(page);
}
@@ -474,15 +474,15 @@ int __nilfs_clear_page_dirty(struct page *page)
struct address_space *mapping = page->mapping;
if (mapping) {
spin_lock_irq(&mapping->tree_lock);
xa_lock_irq(&mapping->i_pages);
if (test_bit(PG_dirty, &page->flags)) {
radix_tree_tag_clear(&mapping->page_tree,
radix_tree_tag_clear(&mapping->i_pages,
page_index(page),
PAGECACHE_TAG_DIRTY);
spin_unlock_irq(&mapping->tree_lock);
xa_unlock_irq(&mapping->i_pages);
return clear_page_dirty_for_io(page);
}
spin_unlock_irq(&mapping->tree_lock);
xa_unlock_irq(&mapping->i_pages);
return 0;
}
return TestClearPageDirty(page);