fs/btrfs/file.c

856 		ret = btrfs_read_folio(NULL, folio);
1004 					pages[i] = NULL;
1070 	struct extent_state *cached_state = NULL;
1097 			NULL, NULL, NULL, nowait, false);
1187 	struct page **pages = NULL;
1188 	struct extent_changeset *data_reserved = NULL;
1229 		struct extent_state *cached_state = NULL;
1390 		 * start offset is >= i_size, we might still have a non-NULL
1705 	return btrfs_do_write_iter(iocb, from, NULL);
1716 		filp->private_data = NULL;
1941 		ctx.scratch_eb = NULL;
2189 	em = btrfs_get_extent(inode, NULL,
2337  * @extent_info is NULL for fallocate's hole punching and non-NULL when replacing
2354 	struct btrfs_trans_handle *trans = NULL;
2386 		trans = NULL;
2505 			trans = NULL;
2608 	struct extent_state *cached_state = NULL;
2610 	struct btrfs_trans_handle *trans = NULL;
2727 					 lockend, NULL, &trans);
2732 	ASSERT(trans != NULL);
2786 	struct falloc_range *range = NULL;
2848 	em = btrfs_get_extent(inode, NULL, offset, sectorsize);
2870 	struct extent_changeset *data_reserved = NULL;
2879 	em = btrfs_get_extent(BTRFS_I(inode), NULL, alloc_start,
2922 		em = btrfs_get_extent(BTRFS_I(inode), NULL, alloc_start, sectorsize);
2996 		struct extent_state *cached_state = NULL;
3041 	struct extent_state *cached_state = NULL;
3042 	struct extent_changeset *data_reserved = NULL;
3138 		em = btrfs_get_extent(BTRFS_I(inode), NULL, cur_offset,
3205 					       range->start, range->len, NULL);
3347  *                       searches in the inode's io_tree. Can be NULL.
3474 	struct extent_state *cached_state = NULL;
3514 		delalloc_cached_state = NULL;
3541 	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);