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authorYasunori Goto <y-goto@jp.fujitsu.com>2007-10-21 16:41:37 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-22 08:13:17 -0700
commitb9049e234401e1fad8459d69a952b174d76c399d (patch)
tree619adc6533f33379baf25253ff56603b272453c8 /drivers/scsi/scsi.h
parent7b78d335ac15b10bbcb0397c635d7f0d569b0270 (diff)
downloadlinux-b9049e234401e1fad8459d69a952b174d76c399d.tar.bz2
memory hotplug: make kmem_cache_node for SLUB on memory online avoid panic
Fix a panic due to access NULL pointer of kmem_cache_node at discard_slab() after memory online. When memory online is called, kmem_cache_nodes are created for all SLUBs for new node whose memory are available. slab_mem_going_online_callback() is called to make kmem_cache_node() in callback of memory online event. If it (or other callbacks) fails, then slab_mem_offline_callback() is called for rollback. In memory offline, slab_mem_going_offline_callback() is called to shrink all slub cache, then slab_mem_offline_callback() is called later. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: locking fix] [akpm@linux-foundation.org: build fix] Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/scsi/scsi.h')
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