linux-kernel - [PATCH v14 61/74] f2fs: Convert to XArray

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Date:   Sat, 16 Jun 2018 19:00:39 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Matthew Wilcox <willy@...radead.org>, Jan Kara <jack@...e.cz>,
        Jeff Layton <jlayton@...hat.com>,
        Lukas Czerner <lczerner@...hat.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Christoph Hellwig <hch@....de>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>,
        linux-nilfs@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>,
        Chao Yu <yuchao0@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: [PATCH v14 61/74] f2fs: Convert to XArray

This is a straightforward conversion.

Signed-off-by: Matthew Wilcox <willy@...radead.org>
---
 fs/f2fs/data.c   | 4 ++--
 fs/f2fs/dir.c    | 2 +-
 fs/f2fs/f2fs.h   | 2 +-
 fs/f2fs/inline.c | 2 +-
 fs/f2fs/node.c   | 6 ++----
 5 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index e5c0b1e74ce6..b274300995cd 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2600,13 +2600,13 @@ const struct address_space_operations f2fs_dblock_aops = {
 #endif
 };
 
-void f2fs_clear_radix_tree_dirty_tag(struct page *page)
+void f2fs_clear_page_cache_dirty_tag(struct page *page)
 {
 	struct address_space *mapping = page_mapping(page);
 	unsigned long flags;
 
 	xa_lock_irqsave(&mapping->i_pages, flags);
-	radix_tree_tag_clear(&mapping->i_pages, page_index(page),
+	__xa_clear_tag(&mapping->i_pages, page_index(page),
 						PAGECACHE_TAG_DIRTY);
 	xa_unlock_irqrestore(&mapping->i_pages, flags);
 }
diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 7f955c4e86a4..9c2a23242f64 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -730,7 +730,7 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
 
 	if (bit_pos == NR_DENTRY_IN_BLOCK &&
 		!f2fs_truncate_hole(dir, page->index, page->index + 1)) {
-		f2fs_clear_radix_tree_dirty_tag(page);
+		f2fs_clear_page_cache_dirty_tag(page);
 		clear_page_dirty_for_io(page);
 		ClearPagePrivate(page);
 		ClearPageUptodate(page);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 4d8b1de83143..1f71ab2ddad9 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2973,7 +2973,7 @@ int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
 			struct page *page, enum migrate_mode mode);
 #endif
 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
-void f2fs_clear_radix_tree_dirty_tag(struct page *page);
+void f2fs_clear_page_cache_dirty_tag(struct page *page);
 
 /*
  * gc.c
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 043830be5662..48f40d344a2a 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -226,7 +226,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
 	kunmap_atomic(src_addr);
 	set_page_dirty(dn.inode_page);
 
-	f2fs_clear_radix_tree_dirty_tag(page);
+	f2fs_clear_page_cache_dirty_tag(page);
 
 	set_inode_flag(inode, FI_APPEND_WRITE);
 	set_inode_flag(inode, FI_DATA_EXIST);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 10643b11bd59..9aa076be8a0e 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -103,7 +103,7 @@ bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type)
 static void clear_node_page_dirty(struct page *page)
 {
 	if (PageDirty(page)) {
-		f2fs_clear_radix_tree_dirty_tag(page);
+		f2fs_clear_page_cache_dirty_tag(page);
 		clear_page_dirty_for_io(page);
 		dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
 	}
@@ -1168,9 +1168,7 @@ void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
 	if (f2fs_check_nid_range(sbi, nid))
 		return;
 
-	rcu_read_lock();
-	apage = radix_tree_lookup(&NODE_MAPPING(sbi)->i_pages, nid);
-	rcu_read_unlock();
+	apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid);
 	if (apage)
 		return;
 
-- 
2.17.1