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@xxxxxxxxxxxxx>
---
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
--
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