Re: [PATCH 00/19 v5] Fix filesystem freezing deadlocks

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]




On 2012-04-16, at 9:13 AM, Jan Kara wrote:
> Another potential contention point might be patch 19. In that patch
> we make freeze_super() refuse to freeze the filesystem when there
> are open but unlinked files which may be impractical in some cases.
> The main reason for this is the problem with handling of file deletion
> from fput() called with mmap_sem held (e.g. from munmap(2)), and
> then there's the fact that we cannot really force such filesystem
> into a consistent state... But if people think that freezing with
> open but unlinked files should happen, then I have some possible
> solutions in mind (maybe as a separate patchset since this is
> large enough).

Looking at a desktop system, I think it is very typical that there
are open-unlinked files present, so I don't know if this is really
an acceptable solution.  It isn't clear from your comments whether
this is a blanket refusal for all open-unlinked files, or only in
some particular cases...

lsof | grep deleted
nautilus  25393  adilger   19r      REG           253,0      340     253954 /home/adilger/.local/share/gvfs-metadata/home (deleted)
nautilus  25393  adilger   20r      REG           253,0    32768     253964 /home/adilger/.local/share/gvfs-metadata/home-f332a8f3.log (deleted)
gnome-ter 25623  adilger   22u      REG            0,18    17841    2717846 /tmp/vtePIRJCW (deleted)
gnome-ter 25623  adilger   23u      REG            0,18     5568    2717847 /tmp/vteDCSJCW (deleted)
gnome-ter 25623  adilger   29u      REG            0,18      480    2728484 /tmp/vte6C1TCW (deleted)

Cheers, Andreas





--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Photo]     [Yosemite Info]    [Yosemite Photos]    [POF Sucks]     [Linux Kernel]     [Linux SCSI]     [XFree86]

Add to Google Powered by Linux