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commit 134d5b6b353d438961bf989a823fed5e4793854f
Author: Richard Braun <[email protected]>
Date: Thu Feb 6 00:41:06 2014 +0100
vm: trigger garbage collection on kernel memory pressure
In addition to physical pages, the slab allocator also consumes kernel
virtual memory, so reclaim pages on failure to allocate from a kernel map.
This method isn't foolproof but helps alleviate fragmentation.
* vm/vm_kern.c (kmem_alloc): Call slab_collect and retry allocation
once on failure.
(kmem_realloc): Likewise.
(kmem_alloc_wired): Likewise.
(kmem_alloc_wired): Likewise.
(kmem_alloc_aligned): Likewise.
-----------------------------------------------------------------------
Summary of changes:
vm/vm_kern.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
1 files changed, 48 insertions(+), 3 deletions(-)
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