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SubjectRe: XFS/md/blkdev warning (was Re: Linux 2.6.26-rc2)
Date
On Sunday 18 May 2008 00:39:08 Christoph Hellwig wrote:
> On Sat, May 17, 2008 at 02:17:37PM -0700, Linus Torvalds wrote:
> > > [4294293.003500] [<ffffffff8028106a>] __kmalloc+0x3e/0xe6
> > > [4294293.003500] [<ffffffff803067fc>] ? xfs_iflush_int+0x272/0x2fb
> > > [4294293.003500] [<ffffffff80320552>] kmem_alloc+0x6a/0xd1
> > > [4294293.003500] [<ffffffff80307a9c>] xfs_iflush_cluster+0x4b/0x33f
> > > [4294293.003500] [<ffffffff8030681e>] ? xfs_iflush_int+0x294/0x2fb
> > > [4294293.003500] [<ffffffff80307f4b>] xfs_iflush+0x1bb/0x29d
> > > [4294293.003500] [<ffffffff8031bc30>] xfs_inode_flush+0xb8/0xdd
> > > [4294293.003500] [<ffffffff80328b1f>] xfs_fs_write_inode+0x30/0x4c
> >
> > And as a result, all the XFS stuff is then waiting for that lock which is
> > held by pdflush above:
>
> Btw, just that function has a missing GFP_NOFS and a too large
> allocation which were fixed by Dave Chinner but aren't in mainline
> yet. Can you check whether it still happens with the patch below?

These patches fix the problem. Thanks Christoph.

--
Cheers,
Alistair.

137/1 Warrender Park Road, Edinburgh, UK.


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