[Crash-utility] Re: [PATCH v4 0/4] xarray: add large folio support

Hi, Shijie Thank you for the update. I can not apply your patch and get an error: # git apply v4-1.patch error: patch failed: ipcs.c:1150 error: ipcs.c: patch does not apply And it seems to have some patch conflicts, would you mind double checking? That is very helpful for our review and testing.

Thanks Lianbo On Fri, Mar 6, 2026 at 6:41 PM Huang Shijie <huangsj(a)hygon.cn&gt; wrote: > The linux kernel supports the large folio for page cache by default. > But the current CRASH does not support the large folio. > So we may meet the errors when we detected the large folio sometimes, > such as in the email: > https://www.spinics.net/linux/fedora/redhat-crash-utility/msg11238.html > ------------------------------ > files: page_to_nid: invalid page: 0 > files: page_to_nid: invalid page: 0 > files: page_to_nid: invalid page: 0 > files: page_to_nid: invalid page: 10 > files: page_to_nid: invalid page: 10 > files: page_to_nid: invalid page: 10 > files: page_to_nid: invalid page: 20 > files: page_to_nid: invalid page: 20 > files: page_to_nid: invalid page: 20 > files: page_to_nid: invalid page: 30 > files: page_to_nid: invalid page: 30 > files: page_to_nid: invalid page: 30 > files: page_to_nid: invalid page: 40 > files: page_to_nid: invalid page: 40 > files: page_to_nid: invalid page: 40 > files: page_to_nid: invalid page: 50 > files: page_to_nid: invalid page: 50 > files: page_to_nid: invalid page: 50 > files: page_to_nid: invalid page: 60 > files: page_to_nid: invalid page: 60 > ------------------------------ > > The first 3 patches are used to add large folio support for CRASH. > The last patch is newly version of an old patch: > it add "files -n" command. > > v3->>v4: > Fixes the BPF bug by: > 1.) patch 1: Add a new type for do_xarray_info > 2.) patch 3: Check XARRAY_TYPE_PAGE_CACHE for > do_xarray_count()/do_xarray_dump()/do_xarray_dump_cb() > > v2-->v3: > Rewrited the folio_order() in patch 2 to work with different > kernel versions. > > v1-->v2: > 1.) Rebase the kernel to later 7.0-rc1(merge window) > 2.) Fixed a bug in the patch 3, the latest kernel supports folios > whose page order is bigger then 5: > "xarray: add large folio support" > > > Huang Shijie (4): > xarray: add a new parameter for do_xarray > add folio_order function > xarray: add large folio support > add "files -n" command for an inode > > bpf.c | 8 ++--- > defs.h | 14 +++++++- > dev.c | 4 +-- > diskdump.c | 10 ++++-- > filesys.c | 94 +++++++++++++++++++++++++++++++++++++++++++++++------- > help.c | 24 +++++++++++++- > ipcs.c | 4 +-- > kernel.c | 4 +-- > memory.c | 74 ++++++++++++++++++++++++++++++++++++++++-- > symbols.c | 6 ++++ > task.c | 4 +-- > tools.c | 16 ++++++++-- > 12 files changed, 230 insertions(+), 32 deletions(-) > > -- > 2.43.0 > > >