Hi,
On 2024-12-09 13:31, Jan Kara wrote:
Hello!
On Sun 08-12-24 17:58:42, Klara Modin wrote:
On 2024-11-15 16:30, Josef Bacik wrote:
FS_PRE_ACCESS or FS_PRE_MODIFY will be generated on page fault depending
on the faulting method.
This pre-content event is meant to be used by hierarchical storage
managers that want to fill in the file content on first read access.
Export a simple helper that file systems that have their own ->fault()
will use, and have a more complicated helper to be do fancy things with
in filemap_fault.
This patch (0790303ec869d0fd658a548551972b51ced7390c in next-20241206)
interacts poorly with some programs which hang and are stuck at 100 % sys
cpu usage (examples of programs are logrotate and atop with root
privileges).
I also retested the new version on Jan Kara's for_next branch and it behaves
the same way.
Thanks for report! What is your kernel config please? I've just fixed a
bug reported by [1] which manifested in the same way with
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=n.
Can you perhaps test with my for_next branch I've just pushed out? Thanks!
Honza
My config was attached, but yes, I have
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=n. I tried the tip by Srikanth Aithal
to enable it and that resolved the issue.
Your new for_next branch resolved the
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=n case for me.
Thanks,
Klara Modin
