Re: Bug with O_DIRECT in 2.6.36-rc3?

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On 09/03/2010 11:58 AM, Ben Greear wrote:
I was getting ENOMEM errors on write when using O_DIRECT in 2.6.36-rc3
plus the
patch I just posted for srcaddr= (my test harness needs that feature to
work).

It seems to work fine w/out O_DIRECT enabled.

The same patch against 2.6.34.6 works fine with and without O_DIRECT.

After the ENOMEM, I cannot un-mount, even with -f (says it's busy).

But, fuser doesn't show any users.

Anyone tried O_DIRECT recently?

I did some testing on un-patched kernels:

It seems this was broken after 2.6.35:

# good: [26845f585fad66dc23d87dad89d403cd64b48780] [SCSI] remove fake "address-of" expression

and before 2.6.36-rc2.

2.6.36-rc1 won't boot for me, and neither would the kernels
generated by my attempt to git-bisect this further.

Thanks,
Ben

--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc  http://www.candelatech.com

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