Re: [PATCH 1/2] mm: serialize OOM kill operations

[Nick Piggin]

Dave Peterson wrote:

> The patch below modifies the behavior of the OOM killer so that only
> one OOM kill operation can be in progress at a time.  When running a
> test program that eats lots of memory, I was observing behavior where
> the OOM killer gets impatient and shoots one or more system daemons
> in addition to the program that is eating lots of memory.  This fixes
> the problematic behavior.

Hi Dave,

Firstly why not use a semaphore and trylocks instead of your homebrew
lock?

Second, can you arrange it without using the extra field in mm_struct
and operation in the mmput fast path?

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