Btrfs: don't wait on uptodate buffers on read (9d64272c) · Commits · e / devices / android_kernel_oneplus_sm7250

fs/btrfs/disk-io.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -214,6 +214,8 @@ struct buffer_head read_tree_block(struct btrfs_root root, u64 blocknr)
		bh = btrfs_find_create_tree_block(root, blocknr);
		if (!bh)
		return bh;
		if (buffer_uptodate(bh))
		goto uptodate;
		lock_buffer(bh);
		if (!buffer_uptodate(bh)) {
		get_bh(bh);
		@@ -226,6 +228,7 @@ struct buffer_head read_tree_block(struct btrfs_root root, u64 blocknr)
		} else {
		unlock_buffer(bh);
		}
		uptodate:
		if (check_tree_block(root, bh))
		BUG();
		return bh;