[Bug 207367] Accraid / aptec / Microsemi / ext4 / larger then 16TB

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

 



https://bugzilla.kernel.org/show_bug.cgi?id=207367

--- Comment #8 from hch@xxxxxxxxxxxxx ---
On Tue, Apr 21, 2020 at 03:08:50PM +1000, Dave Chinner wrote:
> > FYI - I do see that bmap() is also used by below APIs/subsystem.
> > Not sure if any of subsystems mentioned below may still fail later
> > if the underlying FS moved to iomap_bmap() interface or for
> > any existing callers of iomap_bmap() :-
> > 
> > 1. mm/page-io.c (generic_swapfile_activate() func)
> 
> Filesystems using iomap infrastructure should be providing
> aops->swap_activate() to map swapfile extents via
> iomap_swapfile_activate() (e.g. see xfs_iomap_swapfile_activate()),
> not using generic_swapfile_activate().

And we also need to eventually phase generic_swapfile_activate out,
maybe by having a version with a get_blocks callback for the non-iomap
case.

> > 4. fs/jbd2/journal.c
> 
> Broken on filesystems where the journal file might be placed beyond
> a 32 bit block number, iomap_bmap() just makes that obvious. Needs
> fixing.

I think this wants to use iomap, as that would solve all the problems.

> And you missed the MD bitmap code uses bmap() to map it's bitmap
> storage file, which means that is broken is the bitmap file is on a
> filesystem/block device > 16TB, too...

This probably needs to use the in-kernel direct I/O interface, just
as it is planned for cachefiles.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.



[Index of Archives]     [Reiser Filesystem Development]     [Ceph FS]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite National Park]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]     [Linux Media]

  Powered by Linux