On Mon 09-12-24 16:15:32, Aithal, Srikanth wrote: > On 12/8/2024 10:28 PM, Klara Modin wrote: > > Hi, > > > > 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. > > From linux-next20241206 onward we started hitting issues where KVM guests > running kernel > next20241206 on AMD platforms fails to shutdown, hangs > forever with below errors: Thanks for report! This was discussed in [1] and I've just pushed out a branch which has this bug fixed. [1] https://lore.kernel.org/all/20241208152520.3559-1-spasswolf@xxxxxx Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
