Brian Behlendorf 376dc35e22 Add spl_kmem_cache_reclaim module option ... The correct behavior for all registered shrinkers is to return the number of objects in their cache. In theory this allows the Linux VM to balance memory reclaim across all registered caches. In commit b9b3715 this behavior was disabled in favor of returning -1 which notifies the VM that no additional objects are available for reclaim. This was done as a workaround to resolve thrashing in shrink_slabs() which could occur when memory was low and numerous core where in reclaim. Unfortunately, this has been observed to increase the likelihood of OOM events when SPL slab consumers are responsible for consuming the majority of memory. Therefore, this patch makes this behavior tunable. Setting the spl_kmem_cache_reclaim module option to 0x1 will result in the shrinker only being called once. This is the default behavior. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Prakash Surya <surya1@llnl.gov> Closes #358		2014-05-22 10:30:12 -07:00
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fs	Change spl-kmod-devel install path	2013-03-14 12:01:05 -07:00
linux	Linux 3.12 compat: New shrinker API	2013-11-06 13:23:40 -08:00
rpc	Change spl-kmod-devel install path	2013-03-14 12:01:05 -07:00
sharefs	Change spl-kmod-devel install path	2013-03-14 12:01:05 -07:00
sys	Add spl_kmem_cache_reclaim module option	2014-05-22 10:30:12 -07:00
util	Change spl-kmod-devel install path	2013-03-14 12:01:05 -07:00
vm	Change spl-kmod-devel install path	2013-03-14 12:01:05 -07:00
Makefile.am	Change spl-kmod-devel install path	2013-03-14 12:01:05 -07:00
spl-ctl.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
spl-debug.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
spl-device.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
spl-trace.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
splat-ctl.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
strings.h	Refresh links to web site	2013-03-04 19:09:34 -08:00
unistd.h	Refresh links to web site	2013-03-04 19:09:34 -08:00