[PATCH v8 55/63] btrfs: Convert page cache to XArray

[Matthew Wilcox]

From: Matthew Wilcox <mawil...@microsoft.com>

Signed-off-by: Matthew Wilcox <mawil...@microsoft.com>
---
 fs/btrfs/compression.c | 4 +---
 fs/btrfs/extent_io.c   | 8 +++-----
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index ad330af89eef..c2286f436571 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -457,9 +457,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
                if (pg_index > end_index)
                        break;
 
-               rcu_read_lock();
-               page = radix_tree_lookup(&mapping->i_pages, pg_index);
-               rcu_read_unlock();
+               page = xa_load(&mapping->i_pages, pg_index);
                if (page && !xa_is_value(page)) {
                        misses++;
                        if (misses > 4)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index bcc24ee5a2c9..edc472b41037 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -5170,11 +5170,9 @@ void clear_extent_buffer_dirty(struct extent_buffer *eb)
 
                clear_page_dirty_for_io(page);
                xa_lock_irq(&page->mapping->i_pages);
-               if (!PageDirty(page)) {
-                       radix_tree_tag_clear(&page->mapping->i_pages,
-                                               page_index(page),
-                                               PAGECACHE_TAG_DIRTY);
-               }
+               if (!PageDirty(page))
+                       __xa_clear_tag(&page->mapping->i_pages,
+                                       page_index(page), PAGECACHE_TAG_DIRTY);
                xa_unlock_irq(&page->mapping->i_pages);
                ClearPageError(page);
                unlock_page(page);
-- 
2.16.1

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