Re: 3.19-rc5: Bug 91911: [REGRESSION] rm command hangs big time with deleting a lot of files at once

[Chris Mason]

On Fri, Jan 23, 2015 at 9:38 AM, Holger Hoffstätte 
<holger.hoffstae...@googlemail.com> wrote:
On Fri, 23 Jan 2015 15:01:28 +0100, Martin Steigerwald wrote:

 Hi!

 Anyone seen this?

 Reported as:

 
https://urldefense.proofpoint.com/v1/url?u=https://bugzilla.kernel.org/show_bug.cgi?id%3D91911&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=6%2FL0lzzDhu0Y1hL9xm%2BQyA%3D%3D%0A&m=fHpzX%2FNpDGcY26Q1T%2B0VtIyZz0GPMnG3qvE%2FVJ%2Blsf0%3D%0A&s=66b06542cc5a9585c9913a0b76885b4baba0a8028f70149803982388c9333d71

You might be interested in:

https://urldefense.proofpoint.com/v1/url?u=https://git.kernel.org/cgit/linux/kernel/git/josef/btrfs-next.git/commit/?h%3Devict-softlockup%26id%3D29249e14d6e3379a5c4bb098dd4beddfefbc606f&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=6%2FL0lzzDhu0Y1hL9xm%2BQyA%3D%3D%0A&m=fHpzX%2FNpDGcY26Q1T%2B0VtIyZz0GPMnG3qvE%2FVJ%2Blsf0%3D%0A&s=137b101ca50e644b95dc2b14758cf1472e9cc0097b4f89f7edf8e2845455b20f

and

https://urldefense.proofpoint.com/v1/url?u=https://git.kernel.org/cgit/linux/kernel/git/josef/btrfs-next.git/commit/?h%3Devict-softlockup%26id%3De4a58b71ff981b098ac3371f4d573dc6a90006ce&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=6%2FL0lzzDhu0Y1hL9xm%2BQyA%3D%3D%0A&m=fHpzX%2FNpDGcY26Q1T%2B0VtIyZz0GPMnG3qvE%2FVJ%2Blsf0%3D%0A&s=3462ceb04ffed8316e21ffe16eee4e3274f9771a58326cd1bbb9c1cfc1eef9ba

I'm sure everyone would love to hear how this works out for you ;-)

These are a little different.  Josef is fixing softlockups (CPUs pegged 
in R state) while this bug report is for sleeping procs.  The fact that 
things come back sound like we're pegged waiting for IO?  Do you have a 
lot of writing going on at the same time?

-chris



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