Since the kernel commit b93b016313b3ba8003c3b8bb71f569af91f19fc7 ("page cache: use xa_lock") renamed the address_space ->page_tree to ->i_pages, without this patch, the "files -[cp]" options don't work on Linux 4.17 and later kernels. (In this case, is it OK not to add a new member to offset_table?) Also, it looks like the address_space's member that the "files -c" option really requires is ->nrpages, not ->page_tree. Signed-off-by: Kazuhito Hagio <k-hagio(a)ab.jp.nec.com&gt; --- filesys.c | 2 +- memory.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/filesys.c b/filesys.c index 47f5a24..527b3f6 100644 --- a/filesys.c +++ b/filesys.c @@ -2275,7 +2275,7 @@ cmd_files(void) return; case 'c': - if (VALID_MEMBER(address_space_page_tree) && + if (VALID_MEMBER(address_space_nrpages) && VALID_MEMBER(inode_i_mapping)) open_flags |= PRINT_NRPAGES; else diff --git a/memory.c b/memory.c index 24fce5e..ea25047 100644 --- a/memory.c +++ b/memory.c @@ -487,6 +487,8 @@ vm_init(void) MEMBER_OFFSET_INIT(block_device_bd_disk, "block_device", "bd_disk"); MEMBER_OFFSET_INIT(inode_i_mapping, "inode", "i_mapping"); MEMBER_OFFSET_INIT(address_space_page_tree, "address_space", "page_tree"); + if (INVALID_MEMBER(address_space_page_tree)) + MEMBER_OFFSET_INIT(address_space_page_tree, "address_space", "i_pages"); MEMBER_OFFSET_INIT(address_space_nrpages, "address_space", "nrpages"); if (INVALID_MEMBER(address_space_nrpages)) MEMBER_OFFSET_INIT(address_space_nrpages, "address_space", "__nrpages"); -- 1.8.3.1