@@ -5689,6 +5689,20 @@ static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw,
return 0;
}
+/*
+ * This function is used to check the chunk tree when doing direct IO because
+ * btrfs can't create bios that span stripes or chunks.
+ */
+static int btrfs_can_merge_page_dio(size_t size, struct inode *inode,
+ struct bio *bio)
+{
+ struct btrfs_root *root = BTRFS_I(inode)->root;
+ struct btrfs_mapping_tree *map_tree;
+
+ map_tree = &root->fs_info->mapping_tree;
+ return __btrfs_can_merge_page_to_bio(map_tree, size, bio);
+}
+
static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
loff_t file_offset)
{
@@ -5873,7 +5887,7 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb,
ret = __blockdev_direct_IO(rw, iocb, inode,
BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev,
iov, offset, nr_segs, btrfs_get_blocks_direct, NULL,
- btrfs_submit_direct, NULL, 0);
+ btrfs_submit_direct, btrfs_can_merge_page_dio, 0);
if (ret < 0 && ret != -EIOCBQUEUED) {
clear_extent_bit(&BTRFS_I(inode)->io_tree, offset,